Schedule of Investments  (unaudited) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Asset-Backed Securities
ALM XVI Ltd./ALM XVI LLC, Series 2015-16A, Class CR2, (3 mo. LIBOR US + 2.70%), 2.94%, 07/15/27(a)(b)	USD		2,080	$	2,013,704
Anchorage Capital CLO Ltd.(a)(b)
Series 2013-1A, Class CR, (3 mo. LIBOR US + 3.20%), 3.47%, 10/13/30			720		707,993
Series 2016-8A, Class DR, (3 mo. LIBOR US + 3.00%), 3.25%, 07/28/28			1,000		977,467
Battalion CLO X Ltd., Series 2016-10A, Class CR, (3 mo. LIBOR US + 3.45%), 3.71%, 01/24/29(a)(b)			1,000		973,093
Benefit Street Partners CLO X Ltd., Series 2016-10A, Class CR, (3 mo. LIBOR US + 3.50%), 3.78%, 01/15/29(a)(b)			815		759,424
BlueMountain CLO XXVI Ltd., Series 2019-26A, Class E, (3 mo. LIBOR US + 7.70%), 7.97%, 10/20/32(a)(b)			250		250,838
Bowman Park CLO Ltd., Series 2014-1A, Class D2R, (3 mo. LIBOR US + 3.35%), 3.61%, 11/23/25(a)(b)			3,000		2,907,323
Carlyle Global Market Strategies CLO Ltd., Series 2013-1A, Class CR, (3 mo. LIBOR US + 3.35%), 3.61%, 08/14/30(a)(b)			1,000		934,726
CarVal CLO II Ltd.(a)(b)
Series 2019-1A, Class D, (3 mo. LIBOR US + 4.15%), 4.42%, 04/20/32			500		499,989
Series 2019-1A, Class E, (3 mo. LIBOR US + 6.75%), 7.02%, 04/20/32			400		382,041
CarVal CLO III Ltd., Series 2019-2A, Class E, (3 mo. LIBOR US + 6.44%), 6.71%, 07/20/32(a)(b)			500		463,336
CarVal CLO Ltd., Series 2018-1A, Class E, 6.00%, 07/16/31(a)(c)			500		448,907
Cifc Funding Ltd., (3 mo. LIBOR US + 1.13%), 1.40%, 10/17/30(a)(b)			1,000		995,517
CIFC Funding Ltd.(a)(b)
Series 2015-1A, Class ARR, (3 mo. LIBOR US + 1.11%), 1.37%, 01/22/31			1,000		986,073
Series 2015-5A, Class A1R, (3 mo. LIBOR US + 0.86%), 1.10%, 10/25/27			987		981,541
Series 2020-1A, Class D, (3 mo. LIBOR US + 4.00%), 4.24%, 07/15/32			500		495,828
Credit Acceptance Auto Loan Trust, Series 2020-1A, Class A, 2.01%, 02/15/29(a)			2,000		2,047,171
Dryden 75 CLO Ltd., Series 2019-75A, Class CR, (3 mo. LIBOR US + 2.40%), 2.68%, 07/15/30(a)(b)			500		495,826
Dryden CLO Ltd., Series 2018-64A, Class D, (3 mo. LIBOR US + 2.65%), 2.87%, 04/18/31(a)(b)			1,250		1,193,351
Dryden XXVIII Senior Loan Fund, Series 2013-28A, Class B1LR, (3 mo. LIBOR US + 3.15%), 3.43%, 08/15/30(a)(b)			1,000		967,175
Eaton Vance Clo Ltd., Series 2015-1A, Class A2R, (3 mo. LIBOR US + 1.25%), 1.52%, 01/20/30(a)(b)			1,000		990,704
Elmwood CLO III Ltd., Series 2019-3A, Class E, (3 mo. LIBOR US + 7.00%), 7.24%, 10/15/32(a)(b)			1,500		1,458,662
Elmwood CLO V Ltd., Series 2020-2A, Class C, (3 mo. LIBOR US + 2.75%), 3.03%, 07/24/31(a)(b)			500		496,577
Galaxy XXIX CLO Ltd., Series 2018-29A, Class D, (3 mo. LIBOR US + 2.40%), 2.68%, 11/15/26(a)(b)			805		780,616

Security		Par (000)		Value
Asset-Backed Securities (continued)
Goldentree Loan Management US Clo 7 Ltd., (3 mo. LIBOR US + 2.98%), 3.39%, 04/20/31(a)(b)	USD		625	$	617,390
Highbridge Loan Management, Series 3A-2014, Class CR, (3 mo. LIBOR US + 3.60%), 3.87%, 07/18/29(a)(b)			1,000		932,958
Limerock CLO III LLC, Series 2014-3A, Class C, (3 mo. LIBOR US + 3.60%), 3.87%, 10/20/26(a)(b)			3,750		3,716,534
Long Beach Mortgage Loan Trust, Series 2006-8, Class 2A4, (1 mo. LIBOR US + 0.24%), 0.39%, 09/25/36(b)			7,104		3,081,251
Madison Park Funding X Ltd., Series 2012-10A, Class ER2, (3 mo. LIBOR US + 6.40%), 6.67%, 01/20/29(a)(b)			250		217,839
Morgan Stanley ABS Capital I, Inc. Trust, Series 2007-HE5, Class A2D, (1 mo. LIBOR US + 0.34%), 0.49%, 03/25/37(b)			5,995		3,382,826
Nelnet Student Loan Trust, Series 2006-1, Class A5, (3 mo. LIBOR US + 0.11%), 0.37%, 08/23/27(b)			25		25,258
Neuberger Berman CLO XV, Series 2013-15A, Class DR, (3 mo. LIBOR US + 3.05%), 3.33%, 10/15/29(a)(b)			1,000		946,930
Neuberger Berman Loan Advisers CLO 37 Ltd., Series 2020-37A, Class C, (3 mo. LIBOR US + 2.50%), 2.67%, 07/20/31(a)(b)			1,163		1,162,487
OCP CLO Ltd.(a)
Series 2015-9A, Class BR, 2.03%, 07/15/27(c)			250		245,609
Series 2017-13A, Class A1A, (3 mo. LIBOR US + 1.26%), 1.54%, 07/15/30(b)			1,000		996,524
Series 2020-19A, Class C, (3 mo. LIBOR US + 2.95%), 3.27%, 07/20/31(b)			250		247,743
Series 2020-19A, Class D, (3 mo. LIBOR US + 4.47%), 4.79%, 07/20/31(b)			250		248,794
Octagon Investment Partners XXII Ltd., Series 2014- 1A, Class DRR, (3 mo. LIBOR US + 2.75%), 3.01%, 01/22/30(a)(b)			500		465,567
OHA Credit Partners VII Ltd., Series 2012-7A, Class DR, (3 mo. LIBOR US + 4.20%), 4.45%, 11/20/27(a)(b)			1,160		1,152,253
OHA Credit Partners XIII Ltd., Series 2016-13A, Class E, (3 mo. LIBOR US + 7.15%), 7.42%, 01/21/30(a)(b)			595		567,788
OneMain Financial Issuance Trust, Series 2020-1A, Class A, 3.84%, 05/14/32(a)			2,000		2,103,609
OZLM Funding III Ltd., Series 2013-3A, Class BRR, (3 mo. LIBOR US + 2.70%), 2.96%, 01/22/29(a)(b)			1,500		1,490,843
OZLM VIII Ltd., Series 2014-8A, Class CRR, (3 mo. LIBOR US + 3.15%), 3.42%, 10/17/29(a)(b)			875		834,228
OZLM XIV Ltd., Series 2015-14A, Class CR, (3 mo. LIBOR US + 3.00%), 3.28%, 01/15/29(a)(b)			1,000		945,741
OZLM XXI Ltd., Series 2017-21A, Class C, (3 mo. LIBOR US + 2.67%), 2.94%, 01/20/31(a)(b)			1,000		929,540
Palmer Square CLO Ltd., Series 2015-2A, Class CR2, (3 mo. LIBOR US + 2.75%), 3.02%, 07/20/30(a)(b)			250		233,951
Palmer Square Loan Funding Ltd.(a)(b)
(3 mo. LIBOR US + 2.10%), 2.35%, 08/20/27			1,750		1,691,887
Series 2018-5A, Class D, (3 mo. LIBOR US + 4.25%), 4.52%, 01/20/27			1,000		868,002

S C H E D U L E   O F   I N V E S  T M E N T S 1

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Asset-Backed Securities (continued)
Palmer Square Loan Funding Ltd.(a)(b) (continued)
Series 2019-2A, Class B, (3 mo. LIBOR US + 2.25%), 2.52%, 04/20/27	USD		750	$	730,819
Series 2019-3A, Class C, (3 mo. LIBOR US + 3.40%), 3.65%, 08/20/27			750		734,357
Series 2019-4A, Class C, (3 mo. LIBOR US + 3.25%), 3.51%, 10/24/27			250		242,778
Regatta VI Funding Ltd., Series 2016-1A, Class ER, (3 mo. LIBOR US + 5.00%), 5.27%, 07/20/28(a)(b)			250		234,526
Rockford Tower CLO Ltd., Series 2017-1A, Class DR, (3 mo. LIBOR US + 2.65%), 2.89%, 04/15/29(a)(b)			1,750		1,637,369
SLM Private Education Loan Trust, Series 2014-A, Class B, 3.50%, 11/15/44(a)			500		507,179
Sound Point Clo XIV Ltd., Series 2016-3A, Class D, (3 mo. LIBOR US + 3.85%), 4.11%, 01/23/29(a)(b)			1,550		1,491,517
Sterling Coofs Trust(a)(d)
Series 2004-1, Class A, 2.36%, 04/15/29			1,626		16,263
Series 2004-2, Class Note, 2.08%, 03/30/30			1,434		14,341
Structured Asset Securities Corp. Pass-Through Certificates, Series 2002-AL1, Class A2, 3.45%, 02/25/32			227		219,007
TCI-Flatiron CLO Ltd., Series 2016-1A, Class DR, 4.07%, 07/17/28(a)(c)			635		630,434
TICP CLO V Ltd., Series 2016-5A, Class ER, (3 mo. LIBOR US + 5.75%), 6.02%, 07/17/31(a)(b)			537		473,480
TICP CLO X Ltd., Series 2018-10A, Class E, (3 mo. LIBOR US + 5.50%), 5.77%, 04/20/31(a)(b)			250		219,646
TRESTLES CLO Ltd., Series 2017-1A, Class C, (3 mo. LIBOR US + 3.65%), 3.89%, 07/25/29(a)(b)			250		246,726
Unique Pub Finance Co. PLC, Series N, 6.46%, 03/30/32	GBP		100		122,014
Voya CLO 2017-3 Ltd., Series 2017-3A, Class C, (3 mo. LIBOR US + 3.55%), 3.82%, 07/20/30(a)(b)	USD		1,000		965,970
Voya CLO 2018-2 Ltd., Series 2018-2A, Class A2, 1.53%, 07/15/31(a)(c)			1,000		992,041
Voya CLO Ltd., Series 2019-3A, Class C, (3 mo. LIBOR US + 2.60%), 2.87%, 10/17/32(a)(b)			1,500		1,468,127
Westcott Park CLO Ltd., Series 2016-1A, Class DR, (3 mo. LIBOR US + 3.25%), 3.52%, 07/20/28(a)(b)			1,185		1,135,866
York Clo Ltd., Series 2016-2A, Class DR, (3 mo. LIBOR US + 3.15%), 3.42%, 04/20/32(a)(b)			1,500		1,420,386
York CLO Ltd., Series 2016-1A, Class DR, (3 mo. LIBOR US + 3.60%), 3.87%, 10/20/29(a)(b)			1,750		1,698,660
Total Asset-Backed Securities — 7.5% (Cost: $64,638,082)					65,514,940

Security		Shares		Value
Common Stocks
Energy Equipment & Services — 0.0%
Pioneer Energy Services Corp.(d)			542	$	21,047
Total Common Stocks — 0.0% (Cost: $7,225)					21,047
		Par (000)
Corporate Bonds
Advertising Agencies — 0.2%
Interpublic Group of Cos., Inc., 3.75%, 02/15/23	USD		2,000		2,136,215
Aerospace & Defense — 1.7%
Amsted Industries, Inc., 5.63%, 07/01/27(a)			95		101,063
Bombardier, Inc.(a)
8.75%, 12/01/21			489		495,318
5.75%, 03/15/22			62		60,078
6.00%, 10/15/22			6		5,565
6.13%, 01/15/23			204		174,420
7.50%, 12/01/24			82		62,935
7.50%, 03/15/25			25		18,750
7.88%, 04/15/27			496		376,186
Eaton Corp., 4.15%, 11/02/42			500		617,221
F-Brasile SpA/F-Brasile US LLC, Series XR, 7.38%, 08/15/26(a)			200		169,000
General Electric Co.
6.15%, 08/07/37			2,150		2,577,585
6.88%, 01/10/39			135		173,420
Howmet Aerospace, Inc., 5.13%, 10/01/24			132		139,920
Kratos Defense & Security Solutions, Inc., 6.50%, 11/30/25(a)			371		387,309
Lockheed Martin Corp., 4.09%, 09/15/52			1,410		1,815,565
Moog, Inc., 4.25%, 12/15/27(a)			89		91,007
Rolls-Royce PLC, 0.88%, 05/09/24	EUR		100		101,570
Signature Aviation US Holdings, Inc.(a)
5.38%, 05/01/26	USD		72		72,720
4.00%, 03/01/28			211		196,230
Smiths Group PLC, 3.63%, 10/12/22(a)			360		375,162
Spirit AeroSystems, Inc., 5.50%, 01/15/25(a)			121		121,000
TransDigm, Inc.(a)
8.00%, 12/15/25			468		508,950
6.25%, 03/15/26			3,574		3,732,310
Triumph Group, Inc., 8.88%, 06/01/24(a)			463		493,095
United Technologies Corp., 6.13%, 07/15/38			1,450		2,082,051
Wolverine Escrow LLC, 9.00%, 11/15/26(a)			145		119,625
					15,068,055
Air Freight & Logistics — 0.0%
XPO Logistics, Inc., 6.75%, 08/15/24(a)			11		11,651
Airlines — 0.9%
American Airlines Pass-Through Trust
4.95%, 01/15/23			2,106		1,805,890
3.60%, 09/22/27			1,180		1,131,745
Series 2015-2, Class A, 4.00%, 03/22/29			1,181		994,335
Avianca Holdings SA, 9.00%, 05/10/23(a)(e)(f)			302		47,376

2

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Airlines (continued)
Gol Finance SA, 7.00%, 01/31/25(a)	USD		200	$	139,404
Latam Finance Ltd., 6.88%, 04/11/24(a)(e)(f)			257		95,170
Mileage Plus Holdings LLC/Mileage Plus Intellectual Property Assets Ltd., 6.50%, 06/20/27(a)			721		750,741
United Airlines Pass-Through Trust, Series A, 4.30%, 02/15/27			2,811		2,712,619
					7,677,280
Auto Components — 0.3%
Aptiv PLC, 4.40%, 10/01/46			465		455,316
Clarios Global LP, 6.75%, 05/15/25(a)			171		179,977
Clarios Global LP/Clarios US Finance Co.
4.38%, 05/15/26	EUR		100		117,392
6.25%, 05/15/26(a)	USD		732		767,539
8.50%, 05/15/27(a)			1,113		1,149,172
Dealer Tire LLC/DT Issuer LLC, 8.00%, 02/01/28(a)			176		179,520
ZF Finance GmbH
3.00%, 09/21/25	EUR		100		114,017
3.75%, 09/21/28			100		113,435
					3,076,368
Automobiles — 1.2%
Allison Transmission, Inc., 5.88%, 06/01/29(a)	USD		450		486,675
Asbury Automotive Group, Inc.(a)
4.50%, 03/01/28			86		86,538
4.75%, 03/01/30			84		84,630
FCE Bank PLC, 1.62%, 05/11/23	EUR		100		112,848
Ford Motor Co.
4.35%, 12/08/26	USD		7		6,909
4.75%, 01/15/43			2,000		1,810,850
5.29%, 12/08/46			19		17,824
Ford Motor Credit Co. LLC
5.88%, 08/02/21			300		305,625
2.98%, 08/03/22			245		241,325
3.35%, 11/01/22			314		309,290
3.81%, 01/09/24			400		396,000
4.06%, 11/01/24			200		199,750
5.13%, 06/16/25			330		340,312
4.13%, 08/04/25			279		276,326
4.39%, 01/08/26			400		395,436
General Motors Co.
6.80%, 10/01/27			357		434,805
5.00%, 10/01/28			41		46,103
6.25%, 10/02/43			2,506		2,969,769
General Motors Financial Co., Inc.
4.25%, 05/15/23			807		857,272
5.65%, 01/17/29			45		52,493
Group 1 Automotive, Inc., 4.00%, 08/15/28(a)			108		106,110
Ken Garff Automotive LLC, 4.88%, 09/15/28(a)			82		80,668
Navistar International Corp., 6.63%, 11/01/25(a)			217		221,883
Nissan Motor Co. Ltd., 4.81%, 09/17/30(a)			206		207,237
Penske Automotive Group, Inc.
3.50%, 09/01/25			162		161,340
5.50%, 05/15/26			22		22,695
Tesla, Inc., 5.30%, 08/15/25(a)			282		291,870
Wabash National Corp., 5.50%, 10/01/25(a)			176		176,000
					10,698,583
Banks — 1.8%
Banca Monte dei Paschi di Siena SpA, 2.63%, 04/28/25	EUR		100		115,926
Banco Bilbao Vizcaya Argentaria SA, (5 year USD Swap + 3.87%), 6.13%(g)(h)	USD		2,200		2,135,100

Security		Par (000)		Value
Banks (continued)
Bancolombia SA, (5 year CMT + 2.94%), 4.63%, 12/18/29(h)	USD		200	$	193,188
Bank Leumi Le-Israel BM, (5 year CMT + 1.63%), 3.28%, 01/29/31(a)(h)			281		282,054
Bank Tabungan Negara Persero Tbk PT, 4.20%, 01/23/25			200		198,813
Chong Hing Bank Ltd., (5 year CMT + 3.86%), 5.70%(g)(h)			250		248,748
CIT Group, Inc., 5.00%, 08/01/23			237		245,887
Commerzbank AG, (5 year EUR Swap + 4.35%), 4.00%, 12/05/30(h)	EUR		100		119,746
Cooperatieve Rabobank UA, 3.95%, 11/09/22	USD		1,500		1,593,882
Emirates NBD Bank PJSC, (6 year USD Swap + 3.66%), 6.13%(g)(h)			250		257,578
Intesa Sanpaolo SpA, 5.02%, 06/26/24(a)			3,151		3,311,489
Itau Unibanco Holding SA, 5.13%, 05/13/23(a)			200		210,812
Santander Holdings USA, Inc., 4.50%, 07/17/25			2,000		2,218,468
Santander UK Group Holdings PLC, 2.88%, 08/05/21			1,250		1,275,140
Standard Chartered PLC, (5 year USD ICE Swap + 1.97%), 4.87%, 03/15/33(a)(h)			500		545,229
Unione di Banche Italiane SpA, (5 year EUR Swap + 5.75%), 5.88%, 03/04/29(h)	EUR		100		129,532
Wells Fargo & Co., 3.90%, 05/01/45	USD		2,250		2,630,815
					15,712,407
Beverages — 1.1%
Anheuser-Busch Cos. LLC/Anheuser-Busch InBev Worldwide, Inc., 4.90%, 02/01/46(i)			4,600		5,671,935
ARD Finance SA, (6.50% Cash or 7.25% PIK), 6.50%, 06/30/27(a)(j)			501		498,395
Ardagh Packaging Finance PLC/Ardagh Holdings USA Inc., 5.25%, 08/15/27(a)			442		450,398
Ardagh Packaging Finance PLC/Ardagh Holdings USA, Inc.
5.25%, 04/30/25(a)			244		254,980
4.13%, 08/15/26(a)			281		284,864
4.75%, 07/15/27	GBP		100		129,322
Ball Corp.
5.25%, 07/01/25	USD		12		13,583
4.88%, 03/15/26			120		133,800
2.88%, 08/15/30			257		254,109
Central American Bottling Corp., 5.75%, 01/31/27(a)			222		230,059
Crown Cork & Seal Co., Inc., 7.38%, 12/15/26			23		27,284
Mauser Packaging Solutions Holding Co., 5.50%, 04/15/24(a)			431		432,526
Silgan Holdings, Inc., 4.13%, 02/01/28			26		26,585
Trivium Packaging Finance BV
3.75%, 08/15/26	EUR		100		115,758
5.50%, 08/15/26(a)	USD		628		650,278
8.50%, 08/15/27(a)			738		795,730
					9,969,606
Biotechnology — 0.6%
Amgen, Inc., 4.40%, 05/01/45			2,250		2,787,510
Baxalta, Inc., 5.25%, 06/23/45			500		694,254
Emergent BioSolutions, Inc., 3.88%, 08/15/28(a)			51		51,200
Gilead Sciences, Inc., 4.80%, 04/01/44			1,000		1,288,931
					4,821,895
Building Materials — 0.2%
Boise Cascade Co., 4.88%, 07/01/30(a)			92		98,900
CEMEX Finance LLC, 4.63%, 06/15/24	EUR		100		119,443

S C H E D U L E   O F   I N V E S  T M E N T S 3

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Building Materials (continued)
Cornerstone Building Brands, Inc., 6.13%, 01/15/29(a)	USD		148	$	149,908
Forterra Finance LLC/FRTA Finance Corp., 6.50%, 07/15/25(a)			236		249,346
Griffon Corp., 5.75%, 03/01/28			59		61,586
Jeld-Wen, Inc.(a)
6.25%, 05/15/25			98		104,370
4.63%, 12/15/25			37		37,185
4.88%, 12/15/27			11		11,209
Masonite International Corp.(a)
5.75%, 09/15/26			52		54,210
5.38%, 02/01/28			29		30,927
Norbord, Inc., 6.25%, 04/15/23(a)			111		118,770
Standard Industries, Inc.(a)
5.00%, 02/15/27			142		147,680
4.75%, 01/15/28			54		56,025
4.38%, 07/15/30			323		331,161
3.38%, 01/15/31			427		421,447
Summit Materials LLC/Summit Materials Finance Corp., 5.25%, 01/15/29(a)			117		121,826
					2,113,993
Building Products — 0.5%
Advanced Drainage Systems, Inc., 5.00%, 09/30/27(a)			248		259,160
Home Depot, Inc., 5.88%, 12/16/36(i)			1,660		2,499,649
Lowe’s Cos., Inc., 4.38%, 09/15/45			1,000		1,232,933
Specialty Building Products Holdings LLC/SBP Finance Corp., 6.38%, 09/30/26(a)			219		222,833
SRS Distribution, Inc., 8.25%, 07/01/26(a)			332		354,410
					4,568,985
Capital Markets — 1.6%
FMR LLC, 4.95%, 02/01/33(a)			2,300		3,114,549
Icahn Enterprises LP/Icahn Enterprises Finance Corp.
6.75%, 02/01/24			34		34,876
4.75%, 09/15/24			73		73,913
6.38%, 12/15/25			83		85,321
6.25%, 05/15/26			57		59,423
5.25%, 05/15/27			232		241,698
Intercorp Peru Ltd., 3.88%, 08/15/29(a)			200		197,750
LHC3 PLC, (4.13% Cash or 4.88% PIK), 4.13%, 08/15/24(j)	EUR		100		117,831
Northern Trust Corp., 3.95%, 10/30/25	USD		8,000		9,272,202
Owl Rock Capital Corp., 5.25%, 04/15/24			56		58,100
Raymond James Financial, Inc., 4.95%, 07/15/46			400		517,315
					13,772,978
Chemicals — 0.8%
Air Liquide Finance SA, 3.50%, 09/27/46(a)			360		429,584
Atotech Alpha 2 BV, (8.75% Cash or 9.50% PIK), 8.75%, 06/01/23(a)(j)			410		411,025
Atotech Alpha 3 BV/Alpha US Bidco, Inc., 6.25%, 02/01/25(a)			1,112		1,127,290
Axalta Coating Systems LLC, 4.88%, 08/15/24(a)			161		164,019
Axalta Coating Systems LLC/Axalta Coating Systems Dutch Holding B BV, 4.75%, 06/15/27(a)			150		153,375
Blue Cube Spinco LLC
9.75%, 10/15/23			22		22,688
10.00%, 10/15/25			162		171,315
Braskem Netherlands Finance BV, (5 year CMT + 8.22%), 8.50%, 01/23/81(a)(h)			219		220,437

Security		Par (000)		Value
Chemicals (continued)
Chemours Co., 6.63%, 05/15/23	USD		234	$	236,807
Element Solutions, Inc., 3.88%, 09/01/28(a)			784		769,300
Equate Petrochemical BV, 4.25%, 11/03/26(a)			206		215,874
GCP Applied Technologies, Inc., 5.50%, 04/15/26(a)			101		103,020
Illuminate Buyer LLC/Illuminate Holdings IV, Inc., 9.00%, 07/01/28(a)			194		208,550
Minerals Technologies, Inc., 5.00%, 07/01/28(a)			114		117,966
Monitchem HoldCo 3 SA, 5.25%, 03/15/25	EUR		100		119,004
NOVA Chemicals Corp., 4.88%, 06/01/24(a)	USD		41		40,706
Orbia Advance Corp SAB de CV, 4.00%, 10/04/27(a)			200		214,937
Orbia Advance Corp. SAB de CV, 5.50%, 01/15/48(a)			200		224,250
PQ Corp., 5.75%, 12/15/25(a)			309		317,884
Valvoline Inc., 4.38%, 08/15/25			89		91,559
Valvoline, Inc., 4.25%, 02/15/30(a)			138		140,760
Vedanta Resources Finance II PLC, 9.25%, 04/23/26			482		361,500
WESCO Distribution, Inc.(a)
7.13%, 06/15/25			459		499,989
7.25%, 06/15/28			417		456,896
WR Grace & Co-Conn(a)
5.63%, 10/01/24			141		149,812
4.88%, 06/15/27			191		197,246
Yingde Gases Investment Ltd., 6.25%, 01/19/23			200		206,562
					7,372,355
Commercial Services & Supplies — 0.2%
ADT Security Corp.
4.13%, 06/15/23			18		18,828
4.88%, 07/15/32(a)			333		336,330
APX Group, Inc.
7.88%, 12/01/22			80		80,000
8.50%, 11/01/24			82		86,510
ASGN, Inc., 4.63%, 05/15/28(a)			73		73,301
Herc Holdings, Inc., 5.50%, 07/15/27(a)			222		229,692
Intertrust Group BV, 3.38%, 11/15/25	EUR		100		119,283
Prime Security Services Borrower LLC/Prime Finance, Inc.(a)
5.25%, 04/15/24	USD		49		51,327
5.75%, 04/15/26			78		83,412
3.38%, 08/31/27			253		242,689
United Rentals North America, Inc.
3.88%, 11/15/27			67		69,010
4.88%, 01/15/28			55		57,750
5.25%, 01/15/30			40		43,650
4.00%, 07/15/30			104		106,600
					1,598,382
Communications Equipment(a) — 0.1%
Avaya, Inc., 6.13%, 09/15/28			384		391,527
CommScope Technologies LLC, 6.00%, 06/15/25			262		265,550
CommScope, Inc.
5.50%, 03/01/24			397		407,945
6.00%, 03/01/26			158		164,715
8.25%, 03/01/27			27		28,080
					1,257,817
Construction & Engineering — 0.6%
Delhi International Airport Ltd., 6.45%, 06/04/29			200		199,062
Ferrovial Netherlands BV, (5 year EUR Swap + 2.13%), 2.12%(g)(h)	EUR		100		109,934
frontdoor, Inc., 6.75%, 08/15/26(a)	USD		135		143,775
ITR Concession Co. LLC, 4.20%, 07/15/25(a)			4,000		4,372,756

4

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Construction & Engineering (continued)
KBR, Inc., 4.75%, 09/30/28(a)	USD		124	$	124,775
ServiceMaster Co. LLC, 5.13%, 11/15/24(a)			69		70,553
SPIE SA, 2.63%, 06/18/26	EUR		100		116,073
					5,136,928
Construction Materials(a) — 0.3%
American Builders & Contractors Supply Co., Inc., 4.00%, 01/15/28	USD		75		76,219
Core & Main LP, 6.13%, 08/15/25			1,089		1,103,075
HD Supply, Inc., 5.38%, 10/15/26			828		866,121
IAA, Inc., 5.50%, 06/15/27			56		58,310
KAR Auction Services, Inc., 5.13%, 06/01/25			97		96,998
Picasso Finance Sub, Inc., 6.13%, 06/15/25			338		364,073
Williams Scotsman International, Inc., 4.63%, 08/15/28			162		162,655
Winnebago Industries, Inc., 6.25%, 07/15/28			92		97,060
Wolverine Escrow LLC, 8.50%, 11/15/24			164		134,480
					2,958,991
Consumer Discretionary — 0.1%
Nielsen Finance LLC/Nielsen Finance Co.(a)
5.63%, 10/01/28			279		288,570
5.88%, 10/01/30			182		188,370
Techem Verwaltungsgesellschaft 674 mbH, 6.00%, 07/30/26	EUR		100		119,295
					596,235
Consumer Finance — 1.0%
Capital One Financial Corp., 4.75%, 07/15/21	USD		1,935		2,002,098
Husky III Holding Ltd., (13.00% Cash or 13.00% PIK), 13.00%, 02/15/25(a)(j)			203		210,105
Moody’s Corp., 4.50%, 09/01/22			1,800		1,921,282
MPH Acquisition Holdings LLC, 7.13%, 06/01/24(a)			530		544,495
Muthoot Finance Ltd.
6.13%, 10/31/22(a)			247		250,782
4.40%, 09/02/23			200		195,062
Navient Corp.
5.00%, 10/26/20			180		180,000
7.25%, 09/25/23			46		47,495
6.13%, 03/25/24			67		67,502
5.88%, 10/25/24			39		38,781
5.00%, 03/15/27			173		162,452
OneMain Finance Corp.
6.88%, 03/15/25			68		75,458
7.13%, 03/15/26			248		277,066
6.63%, 01/15/28			141		156,482
5.38%, 11/15/29			78		81,120
Refinitiv US Holdings, Inc.(a)
4.50%, 05/15/26	EUR		245		300,217
6.25%, 05/15/26	USD		143		153,010
8.25%, 11/15/26			544		595,680
Sabre GLBL, Inc.(a)
5.25%, 11/15/23			29		28,348
7.38%, 09/01/25			168		169,680
Verscend Escrow Corp., 9.75%, 08/15/26(a)			1,279		1,390,644
WEX, Inc., 4.75%, 02/01/23(a)			123		123,154
					8,970,913
Containers & Packaging — 0.3%
Celulosa Arauco y Constitucion SA, 4.20%, 01/29/30			200		211,500

Security		Par (000)		Value
Containers & Packaging (continued)
Crown Americas LLC/Crown Americas Capital Corp. V, 4.25%, 09/30/26	USD		136	$	140,760
Crown Americas LLC/Crown Americas Capital Corp. VI, 4.75%, 02/01/26			97		100,637
Graphic Packaging International LLC(a)
4.75%, 07/15/27			53		57,373
3.50%, 03/15/28			78		77,805
3.50%, 03/01/29			73		73,456
Intelligent Packaging Ltd. Finco Inc./Intelligent Packaging Ltd. Co-Issuer LLC, 6.00%, 09/15/28(a)			88		89,236
International Paper Co., 6.00%, 11/15/41			870		1,195,905
Intertape Polymer Group, Inc., 7.00%, 10/15/26(a)			119		124,950
LABL Escrow Issuer LLC, 6.75%, 07/15/26(a)			166		175,130
Suzano Austria GmbH, 3.75%, 01/15/31			80		79,920
					2,326,672
Diversified Consumer Services — 0.4%
Allied Universal Holdco LLC/Allied Universal Finance Corp.(a)
6.63%, 07/15/26			1,442		1,535,730
9.75%, 07/15/27			266		289,014
Ascend Learning LLC, 6.88%, 08/01/25			461		471,289
Garda World Security Corp.(a)
4.63%, 02/15/27			180		180,900
9.50%, 11/01/27			92		96,600
Graham Holdings Co., 5.75%, 06/01/26(a)			62		65,255
Laureate Education, Inc., 8.25%, 05/01/25(a)			72		76,320
Service Corp. International
5.13%, 06/01/29			19		21,054
3.38%, 08/15/30			175		175,219
Sotheby’s, 7.38%, 10/15/27(a)			265		265,000
					3,176,381
Diversified Financial Services — 3.3%
Ally Financial, Inc., 8.00%, 11/01/31			810		1,108,991
Arrow Global Finance PLC, 5.13%, 09/15/24	GBP		100		121,729
ASG Finance Designated Activity Co., 7.88%, 12/03/24(a)	USD		200		143,000
Bank of America Corp., 3.25%, 10/21/27			4,000		4,425,132
Barclays PLC, 3.65%, 03/16/25			4,320		4,659,480
Citigroup, Inc., Series V, (Secured Overnight Financing Rate + 3.23%), 4.70%(g)(h)			410		396,163
Credit Agricole SA, (5 year USD Swap + 4.90%), 7.88%(a)(g)(h)			1,000		1,105,000
Global Aircraft Leasing Co. Ltd., (6.50% Cash or 7.25% PIK), 6.50%, 09/15/24(a)(j)			209		111,024
Goldman Sachs Group, Inc.
3.75%, 05/22/25(i)			8,965		9,963,724
Series R, (5 year CMT + 3.22%), 4.95%(g)(h)			465		465,140
HSBC Holdings PLC, 6.10%, 01/14/42			610		874,676
Intercontinental Exchange, Inc., 4.00%, 10/15/23			470		515,673
Intrum AB, 3.00%, 09/15/27	EUR		100		101,857
Ladder Capital Finance Holdings LLLP/Ladder Capital Finance Corp.(a)
5.25%, 03/15/22	USD		17		16,665
4.25%, 02/01/27			212		183,380
Lloyds Banking Group PLC, (5 year CMT + 4.82%), 6.75%(g)(h)			595		621,031
Manappuram Finance Ltd., 5.90%, 01/13/23			200		195,625

S C H E D U L E   O F   I N V E S  T M E N T S 5

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Diversified Financial Services (continued)
Morgan Stanley
4.00%, 07/23/25	USD		905	$	1,022,876
3.13%, 07/27/26			2,000		2,214,122
Operadora de Servicios Mega SA de CV Sofom ER, 8.25%, 02/11/25(a)			200		183,125
Spectrum Brands, Inc.(a)
5.00%, 10/01/29			79		81,963
5.50%, 07/15/30			104		109,720
					28,620,096
Diversified Telecommunication Services — 3.9%
AT&T, Inc.
6.10%, 07/15/40			830		1,124,259
6.38%, 03/01/41			520		742,909
5.15%, 03/15/42			2,400		2,999,837
4.75%, 05/15/46			2,710		3,183,616
Axtel SAB de CV, 6.38%, 11/14/24(a)			200		207,750
CenturyLink, Inc.
5.13%, 12/15/26(a)			552		567,119
4.00%, 02/15/27(a)			235		238,739
Series P, 7.60%, 09/15/39			243		274,561
Series U, 7.65%, 03/15/42			274		306,195
Series W, 6.75%, 12/01/23			74		81,123
Series Y, 7.50%, 04/01/24			219		245,192
Cincinnati Bell, Inc.(a)
7.00%, 07/15/24			144		148,232
8.00%, 10/15/25			45		47,531
Consolidated Communications, Inc., 6.50%, 10/01/28(a)(k)			135		137,700
Frontier Communications Corp., 8.00%, 04/01/27(a)			763		760,364
Level 3 Financing, Inc.
5.25%, 03/15/26			183		189,579
4.63%, 09/15/27(a)			16		16,440
4.25%, 07/01/28(a)			551		559,441
3.63%, 01/15/29(a)			287		283,413
Oi SA, (10% Cash or 8.00% Cash + 4.00% PIK), 10.00%, 07/27/25(j)			220		211,372
SoftBank Group Corp.
4.00%, 04/20/23	EUR		100		121,114
5.00%, 04/15/28			100		124,059
Sprint Capital Corp.
6.88%, 11/15/28	USD		567		708,750
8.75%, 03/15/32			146		213,716
Switch Ltd., 3.75%, 09/15/28(a)			213		215,130
Telecom Italia Capital SA
6.38%, 11/15/33			131		155,890
6.00%, 09/30/34			337		390,920
7.20%, 07/18/36			60		75,672
7.72%, 06/04/38			199		264,670
Telecom Italia SpA
5.30%, 05/30/24(a)			200		216,500
3.00%, 09/30/25	EUR		100		121,788
Verizon Communications, Inc.
6.40%, 02/15/38(i)	USD		5,700		7,924,157
6.55%, 09/15/43			6,751		10,989,149
					33,846,887
Electric Utilities — 3.6%
Cleveland Electric Illuminating Co., 5.95%, 12/15/36			434		565,179
CMS Energy Corp., 5.05%, 03/15/22			1,832		1,929,612

Security		Par (000)		Value
Electric Utilities (continued)
Duke Energy Carolinas LLC
6.10%, 06/01/37	USD		640	$	940,458
6.00%, 01/15/38			1,675		2,491,940
4.25%, 12/15/41			750		932,173
Duke Energy Florida LLC
6.35%, 09/15/37			2,775		4,201,698
6.40%, 06/15/38			770		1,175,199
E.ON International Finance BV, 6.65%, 04/30/38(a)			3,100		4,504,226
Empresas Publicas de Medellin ESP, 4.25%, 07/18/29(a)			201		200,719
Energuate Trust, 5.88%, 05/03/27(a)			201		208,726
NextEra Energy Operating Partners LP(a)
4.25%, 07/15/24			192		200,198
4.25%, 09/15/24			58		60,465
4.50%, 09/15/27			27		28,823
Ohio Power Co., Series D, 6.60%, 03/01/33			3,000		4,245,416
PacifiCorp, 6.25%, 10/15/37			1,225		1,776,312
PG&E Corp., 5.25%, 07/01/30			229		221,557
Pike Corp., 5.50%, 09/01/28(a)			113		113,699
Southern California Edison Co., 5.63%, 02/01/36			1,300		1,558,754
Virginia Electric & Power Co., Series A, 6.00%, 05/15/37			3,920		5,659,324
					31,014,478
Electrical Equipment — 0.0%
Gates Global LLC/Gates Global Co., 6.25%, 01/15/26(a)			188		193,788
Electronic Equipment, Instruments & Components — 0.4%
BWX Technologies, Inc.(a)
5.38%, 07/15/26			136		141,270
4.13%, 06/30/28			169		172,803
CDW LLC/CDW Finance Corp.
4.13%, 05/01/25			150		154,875
3.25%, 02/15/29			266		265,002
Corning, Inc., 4.38%, 11/15/57			2,000		2,421,633
Energizer Holdings, Inc.(a)
6.38%, 07/15/26			61		65,587
7.75%, 01/15/27			66		72,105
4.75%, 06/15/28			214		221,469
4.38%, 03/31/29			13		13,130
Itron, Inc., 5.00%, 01/15/26(a)			18		18,450
Xerox Corp., 4.80%, 03/01/35			122		116,510
					3,662,834
Energy Equipment & Services — 0.2%
Anton Oilfield Services Group, 7.50%, 12/02/22			200		112,938
Archrock Partners LP/Archrock Partners Finance Corp.(a)
6.88%, 04/01/27			182		174,334
6.25%, 04/01/28			20		18,850
ChampionX Corp., 6.38%, 05/01/26			146		139,458
Halliburton Co., 5.00%, 11/15/45			500		515,725
Pioneer Energy Services Corp.(a)(d)(j)
(11.00% PIK), 11.00%, 05/15/25			225		179,784
(5.00% PIK), 5.00%, 11/15/25(l)			152		82,148
USA Compression Partners LP/USA Compression Finance Corp.
6.88%, 04/01/26			237		234,926
6.88%, 09/01/27			327		324,260
					1,782,423

6

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Environmental, Maintenance, & Security Service — 0.2%
Clean Harbors, Inc.(a)
4.88%, 07/15/27	USD		46	$	47,725
5.13%, 07/15/29			109		118,251
Covanta Holding Corp., 5.00%, 09/01/30			60		60,558
GFL Environmental, Inc.(a)
4.25%, 06/01/25			59		59,590
3.75%, 08/01/25			177		177,978
7.00%, 06/01/26			359		378,458
5.13%, 12/15/26			382		394,453
8.50%, 05/01/27			140		151,900
Tervita Corp., 7.63%, 12/01/21(a)			166		151,475
Waste Pro USA, Inc., 5.50%, 02/15/26(a)			318		321,813
					1,862,201
Equity Real Estate Investment Trusts (REITs) — 1.4%
ERP Operating LP, 4.50%, 06/01/45			1,155		1,480,866
Fortune Star BVI Ltd.
6.88%, 01/31/21			200		201,500
5.95%, 01/29/23			200		202,687
6.75%, 07/02/23			250		257,812
Healthpeak Properties, Inc., 4.00%, 06/01/25			2,000		2,252,699
Hilton Domestic Operating Co. Inc., 5.75%, 05/01/28(a)			148		155,955
Hilton Domestic Operating Co., Inc.
4.25%, 09/01/24			56		55,720
5.38%, 05/01/25(a)			123		128,449
5.13%, 05/01/26			207		213,059
4.88%, 01/15/30			467		481,010
Hilton Worldwide Finance LLC/Hilton Worldwide Finance Corp., 4.88%, 04/01/27			44		44,701
Iron Mountain Inc., 5.25%, 03/15/28(a)			77		80,176
Iron Mountain, Inc.(a)
4.88%, 09/15/29			20		20,350
5.25%, 07/15/30			420		437,850
4.50%, 02/15/31			62		62,583
5.63%, 07/15/32			316		333,696
LMIRT Capital Pte Ltd., 7.25%, 06/19/24			250		227,969
Marriott Ownership Resorts, Inc./ILG LLC, 6.50%, 09/15/26			24		24,641
MGM Growth Properties Operating Partnership LP/MGP Finance Co-Issuer, Inc.
5.63%, 05/01/24			335		355,194
4.50%, 09/01/26			277		281,021
5.75%, 02/01/27			16		17,240
4.50%, 01/15/28			205		208,844
MPT Operating Partnership LP/MPT Finance Corp.
5.00%, 10/15/27			446		465,044
4.63%, 08/01/29			375		390,176
NH Hotel Group SA, 3.75%, 10/01/23	EUR		115		122,802
RHP Hotel Properties LP/RHP Finance Corp., 4.75%, 10/15/27	USD		282		259,981
Simon Property Group LP, 4.75%, 03/15/42			1,670		1,917,669
Starwood Property Trust, Inc., 5.00%, 12/15/21			77		76,230
Trust Fibra Uno, 6.95%, 01/30/44			476		506,642
Ventas Realty LP, 4.13%, 01/15/26			870		977,552
Wyndham Hotels & Resorts, Inc., 4.38%, 08/15/28(a)			124		120,280
					12,360,398

Security		Par (000)		Value
Food & Staples Retailing — 0.8%
Albertsons Cos., Inc.(a)
7.50%, 03/15/26	USD		65	$	71,308
5.88%, 02/15/28			180		192,150
4.88%, 02/15/30			167		174,098
Albertsons Cos., Inc./Safeway, Inc./New Albertsons LP/Albertsons LLC, 4.63%, 01/15/27(a)			301		307,980
Albertsons Cos., Inc./Safeway, Inc./New Albertsons LP/Albertson’s LLC, 3.25%, 03/15/26(a)			200		198,464
Cydsa SAB de CV, 6.25%, 10/04/27(a)			319		321,492
Grupo KUO SAB de CV, 5.75%, 07/07/27(a)			200		193,125
Health & Happiness H&H International Holdings Ltd., 5.63%, 10/24/24			200		206,438
Kraft Heinz Foods Co.
3.88%, 05/15/27(a)			42		44,487
4.25%, 03/01/31(a)			878		963,298
5.00%, 07/15/35			85		97,877
6.88%, 01/26/39			160		214,313
4.63%, 10/01/39(a)			53		56,267
6.50%, 02/09/40			110		139,801
5.00%, 06/04/42			86		94,181
5.20%, 07/15/45			95		103,857
4.38%, 06/01/46			252		258,912
4.88%, 10/01/49(a)			684		721,837
5.50%, 06/01/50(a)			864		990,192
Lamb Weston Holdings, Inc., 4.88%, 05/15/28(a)			212		228,960
Post Holdings, Inc.(a)
5.00%, 08/15/26			3		3,075
5.75%, 03/01/27			73		76,741
4.63%, 04/15/30			267		274,676
Walgreens Boots Alliance, Inc., 4.80%, 11/18/44			1,000		1,094,333
					7,027,862
Food Products — 0.3%
Aramark Services, Inc.
5.00%, 04/01/25(a)			138		139,987
6.38%, 05/01/25(a)			164		170,835
4.75%, 06/01/26			154		155,817
5.00%, 02/01/28(a)			411		414,082
Chobani LLC/Chobani Finance Corp., Inc., 7.50%, 04/15/25(a)			44		45,486
Darling Ingredients, Inc., 5.25%, 04/15/27(a)			12		12,600
Grupo Bimbo SAB de CV, (5 year CMT + 3.28%), 5.95%(a)(g)(h)			200		209,281
JBS USA LUX SA/JBS USA Finance, Inc.(a)
5.75%, 06/15/25			307		315,765
6.75%, 02/15/28			151		163,835
JBS USA LUX SA/JBS USA Food Co./JBS USA Finance, Inc., 6.50%, 04/15/29(a)			174		193,135
MHP Lux SA, 6.25%, 09/19/29(a)			400		380,000
Minerva Luxembourg SA, 6.50%, 09/20/26(a)			200		207,750
Simmons Foods, Inc., 7.75%, 01/15/24(a)			157		164,458
					2,573,031
Health — 0.1%
Northwell Healthcare, Inc., 4.26%, 11/01/47			725		832,287
Health Care Equipment & Supplies — 0.5%
Avantor Funding, Inc., 4.63%, 07/15/28(a)			641		665,038
Avantor, Inc., 6.00%, 10/01/24(a)			657		686,565
Hologic, Inc.(a) 4.63%, 02/01/28			96		100,836

S C H E D U L E   O F   I N V E S  T M E N T S 7

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Health Care Equipment & Supplies (continued)
Hologic, Inc.(a) (continued)
3.25%, 02/15/29	USD		92	$	92,575
Ortho-Clinical Diagnostics Inc./Ortho-Clinical Diagnostics SA(a)
7.38%, 06/01/25			400		406,000
7.25%, 02/01/28			791		822,640
Thermo Fisher Scientific, Inc., 5.30%, 02/01/44			1,000		1,397,466
					4,171,120
Health Care Providers & Services — 1.3%
Acadia Healthcare Co, Inc., 5.50%, 07/01/28(a)			138		141,935
Acadia Healthcare Co., Inc., 5.00%, 04/15/29(a)(k)			80		80,700
AdaptHealth LLC, 6.13%, 08/01/28(a)			98		101,450
Aetna, Inc., 4.50%, 05/15/42			575		684,604
AHP Health Partners, Inc., 9.75%, 07/15/26(a)			150		160,875
Centene Corp.
5.38%, 06/01/26(a)			6		6,323
5.38%, 08/15/26(a)			197		208,657
4.25%, 12/15/27			264		276,258
4.63%, 12/15/29			809		872,636
3.38%, 02/15/30			86		89,225
3.00%, 10/15/30(k)			207		211,181
CHS/Community Health Systems, Inc.(a)
8.63%, 01/15/24			354		352,230
6.63%, 02/15/25			98		94,815
8.00%, 03/15/26			856		841,448
Encompasss Health Corp. , 4.63%, 04/01/31			68		68,000
HCA, Inc.
5.38%, 02/01/25			345		377,775
5.88%, 02/15/26			3		3,360
5.38%, 09/01/26			97		107,185
5.63%, 09/01/28			444		507,914
5.88%, 02/01/29			147		171,255
3.50%, 09/01/30			662		674,499
5.50%, 06/15/47			850		1,052,266
LifePoint Health, Inc.(a)
6.75%, 04/15/25			130		136,825
4.38%, 02/15/27			65		65,081
Molina Healthcare, Inc.
5.38%, 11/15/22			4		4,180
4.38%, 06/15/28(a)			175		178,587
Phoenix PIB Dutch Finance BV, 2.38%, 08/05/25	EUR		100		118,103
Polaris Intermediate Corp., (8.50% Cash or 9.25% PIK), 8.50%, 12/01/22(a)(j)	USD		265		269,808
RegionalCare Hospital Partners Holdings, Inc./LifePoint Health Inc., 9.75%, 12/01/26(a)			55		58,438
Surgery Center Holdings, Inc.(a)
6.75%, 07/01/25			378		376,110
10.00%, 04/15/27			210		223,650
Teleflex, Inc., 4.25%, 06/01/28(a)			279		288,765
Tenet Healthcare Corp.
8.13%, 04/01/22			641		712,728
4.63%, 07/15/24			2		2,010
4.63%, 09/01/24(a)			98		98,796
7.50%, 04/01/25(a)			123		132,225
4.88%, 01/01/26(a)			679		691,331
6.25%, 02/01/27(a)			40		41,288
5.13%, 11/01/27(a)			478		491,002
4.63%, 06/15/28(a)			96		97,382

Security		Par (000)		Value
Health Care Providers & Services (continued)
Tenet Healthcare Corp. (continued)
6.13%, 10/01/28(a)	USD		290	$	282,025
Vizient, Inc., 6.25%, 05/15/27(a)			176		184,360
					11,537,285
Health Care Technology — 0.1%
Change Healthcare Holdings LLC/Change Healthcare Finance, Inc., 5.75%, 03/01/25(a)			518		525,407
Hotels, Restaurants & Leisure — 1.7%
1011778 BC ULC/New Red Finance, Inc.(a)
5.75%, 04/15/25			199		212,433
5.00%, 10/15/25			286		293,253
3.88%, 01/15/28			271		276,095
4.38%, 01/15/28			312		318,178
4.00%, 10/15/30(k)			42		42,324
Boyd Gaming Corp.
8.63%, 06/01/25(a)			65		71,258
6.38%, 04/01/26			99		103,078
6.00%, 08/15/26			68		70,125
4.75%, 12/01/27			121		118,731
Boyne USA, Inc., 7.25%, 05/01/25(a)			120		126,000
Caesars Entertainment, Inc.(a)
6.25%, 07/01/25			986		1,030,612
8.13%, 07/01/27			590		625,400
Caesars Resort Collection LLC/CRC Finco, Inc., 5.75%, 07/01/25(a)			322		332,062
Cedar Fair LP/Canada’s Wonderland Co./Magnum Management Corp./Millennium Op, 5.50%, 05/01/25(a)			340		350,200
Churchill Downs, Inc.(a)
5.50%, 04/01/27			318		331,928
4.75%, 01/15/28			243		244,215
Corvias Campus Living USG LLC, 5.30%, 07/01/50(d)			5,663		4,219,797
GLP Capital LP/GLP Financing II, Inc.
5.25%, 06/01/25			223		242,138
5.38%, 04/15/26			98		108,613
Golden Nugget, Inc., 6.75%, 10/15/24(a)			696		581,160
Las Vegas Sands Corp.
2.90%, 06/25/25			35		34,956
3.50%, 08/18/26			31		31,414
3.90%, 08/08/29			29		28,995
Melco Resorts Finance Ltd., 5.25%, 04/26/26			250		252,500
MGM China Holdings Ltd., 5.88%, 05/15/26			250		258,750
MGM Resorts International
7.75%, 03/15/22			305		321,485
6.00%, 03/15/23			253		262,463
Powdr Corp., 6.00%, 08/01/25(a)			119		121,678
Scientific Games International, Inc.
8.63%, 07/01/25(a)			136		141,913
5.00%, 10/15/25(a)			319		320,595
3.38%, 02/15/26	EUR		100		111,383
8.25%, 03/15/26(a)	USD		156		162,878
7.00%, 05/15/28(a)			100		100,245
7.25%, 11/15/29(a)			96		97,440
Six Flags Theme Parks, Inc., 7.00%, 07/01/25(a)			508		540,385
Stonegate Pub Co. Financing 2019 PLC, 8.25%, 07/31/25	GBP		100		119,350
Studio City Finance Ltd., 7.25%, 02/11/24	USD		250		257,762
Vail Resorts, Inc., 6.25%, 05/15/25(a)			105		111,431

8

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Hotels, Restaurants & Leisure (continued)
Wynn Las Vegas LLC/Wynn Las Vegas Capital Corp., 5.25%, 05/15/27(a)	USD		125	$	116,250
Wynn Macau Ltd.
4.88%, 10/01/24			200		196,750
5.50%, 10/01/27			200		195,500
Wynn Resorts Finance LLC/Wynn Resorts Capital Corp.(a)
7.75%, 04/15/25			163		172,631
5.13%, 10/01/29			286		272,415
Yum! Brands, Inc.
3.88%, 11/01/23			27		27,945
7.75%, 04/01/25(a)			289		320,515
4.75%, 01/15/30(a)			26		28,080
3.63%, 03/15/31			85		85,000
5.35%, 11/01/43			44		46,420
					14,434,729
Household Durables — 0.3%
Brookfield Residential Properties, Inc./Brookfield Residential U.S. Corp.(a)
6.25%, 09/15/27			90		90,758
4.88%, 02/15/30			154		144,146
CD&R Smokey Buyer, Inc., 6.75%, 07/15/25(a)			158		166,690
Controladora Mabe SA de CV, 5.60%, 10/23/28(a)			215		240,306
K Hovnanian Enterprises, Inc., 7.75%, 02/15/26(a)			206		208,060
Lennar Corp.
4.88%, 12/15/23			85		91,481
4.75%, 05/30/25			149		162,616
5.25%, 06/01/26			38		42,655
4.75%, 11/29/27			215		245,476
Mattamy Group Corp., 4.63%, 03/01/30(a)			159		161,003
MDC Holdings, Inc., 6.00%, 01/15/43			72		87,120
Meritage Homes Corp., 5.13%, 06/06/27			35		38,763
NCR Corp.(a)
5.75%, 09/01/27			108		112,913
5.00%, 10/01/28			73		73,058
6.13%, 09/01/29			57		60,358
5.25%, 10/01/30			74		74,000
PulteGroup, Inc.
5.00%, 01/15/27			16		18,100
7.88%, 06/15/32			14		19,250
6.38%, 05/15/33			216		271,620
6.00%, 02/15/35			27		33,345
Taylor Morrison Communities, Inc.(a)
5.88%, 06/15/27			132		145,200
5.13%, 08/01/30			100		106,500
Tempur Sealy International, Inc., 5.50%, 06/15/26			67		69,543
Toll Brothers Finance Corp., 4.35%, 02/15/28			8		8,680
TRI Pointe Group, Inc., 5.25%, 06/01/27			28		29,890
					2,701,531
Household Products — 0.0%
ACCO Brands Corp., 5.25%, 12/15/24(a)			59		60,399
Independent Power and Renewable Electricity Producers — 0.5%
Adani Green Energy UP Ltd./Prayatna Developers Pvt Ltd./Parampujya Solar Energ, 6.25%, 12/10/24			200		214,500
Azure Power Solar Energy Pvt Ltd., 5.65%, 12/24/24			200		208,312
Calpine Corp.(a)
5.25%, 06/01/26			64		66,488

Security		Par (000)		Value
Independent Power and Renewable Electricity Producers (continued)
Calpine Corp.(a) (continued)
4.50%, 02/15/28	USD		250	$	256,035
5.13%, 03/15/28			943		976,005
4.63%, 02/01/29			361		360,323
5.00%, 02/01/31			370		377,141
Clearway Energy Operating LLC, 4.75%, 03/15/28(a)			287		296,327
ENN Clean Energy International Investment Ltd., 7.50%, 02/27/21			200		202,000
Greenko Dutch BV, 5.25%, 07/24/24			200		203,438
Greenko Mauritius Ltd., 6.25%, 02/21/23			200		204,500
Greenko Solar Mauritius Ltd., 5.95%, 07/29/26			200		207,000
NRG Energy, Inc.
6.63%, 01/15/27			40		42,300
5.75%, 01/15/28			18		19,418
5.25%, 06/15/29(a)			173		188,138
ReNew Power Synthetic, 6.67%, 03/12/24			200		206,250
TerraForm Power Operating LLC(a)
4.25%, 01/31/23			65		66,617
5.00%, 01/31/28			16		17,515
4.75%, 01/15/30			160		169,200
					4,281,507
Insurance — 2.5%
Acrisure LLC/Acrisure Finance, Inc., 8.13%, 02/15/24(a)			23		24,093
Alliant Holdings Intermediate LLC/Alliant Holdings Co.-Issuer, 6.75%, 10/15/27(a)			727		762,710
Allied World Assurance Co. Holdings Ltd., 4.35%, 10/29/25			1,495		1,618,639
Allstate Corp., (3 mo. LIBOR US + 2.12%), 6.50%, 05/15/67(h)			4,100		5,390,372
AmWINS Group, Inc., 7.75%, 07/01/26(a)			89		95,230
Aon PLC
3.88%, 12/15/25			1,445		1,656,403
4.60%, 06/14/44			500		634,476
Asahi Mutual Life Insurance Co., (5 year USD Swap + 4.59%), 6.50%(g)(h)			333		357,142
Assicurazioni Generali SpA, (3 mo. Euribor + 5.35%), 5.50%, 10/27/47(h)	EUR		100		137,616
Five Corners Funding Trust, 4.42%, 11/15/23(a)	USD		2,050		2,277,754
GTCR AP Finance, Inc., 8.00%, 05/15/27(a)			171		180,405
HUB International Ltd., 7.00%, 05/01/26(a)			848		878,740
Liberty Mutual Group, Inc., 6.50%, 05/01/42(a)			2,000		2,762,206
Muenchener Rueckversicherungs-Gesellschaft AGin Muenchen, (3 mo. Euribor + 3.50%), 6.00%, 05/26/41(h)	EUR		400		484,918
Nationwide Building Society, (5 year USD ICE Swap + 1.85%), 4.13%, 10/18/32(a)(h)	USD		720		766,824
Prudential Financial, Inc.(i)
5.90%, 03/17/36			500		662,711
5.70%, 12/14/36			1,625		2,329,388
Teachers Insurance & Annuity Association of America, 4.27%, 05/15/47(a)			700		819,573
Unipol Gruppo SpA, 3.25%, 09/23/30	EUR		100		118,462
					21,957,662
Interactive Media & Services — 0.2%
21Vianet Group, Inc., 7.88%, 10/15/21	USD		200		204,250
Cablevision Lightpath LLC(a)
3.88%, 09/15/27			220		220,000

S C H E D U L E   O F   I N V E S  T M E N T S 9

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Interactive Media & Services (continued)
Cablevision Lightpath LLC(a) (continued)
5.63%, 09/15/28	USD		219	$	222,219
Netflix, Inc.
3.63%, 06/15/25(a)			65		67,901
4.88%, 04/15/28			31		34,642
5.88%, 11/15/28			335		399,724
5.38%, 11/15/29(a)			483		569,288
3.63%, 06/15/30	EUR		100		126,918
4.88%, 06/15/30(a)	USD		224		255,360
Twitter, Inc., 3.88%, 12/15/27(a)			64		65,760
					2,166,062
Internet Software & Services(a) — 0.2%
Expedia Group, Inc., 6.25%, 05/01/25			408		449,987
Go Daddy Operating Co. LLC/GD Finance Co., Inc., 5.25%, 12/01/27			27		28,095
Match Group Holdings II LLC
4.63%, 06/01/28			126		129,780
5.63%, 02/15/29			107		115,293
4.13%, 08/01/30			57		57,659
Uber Technologies, Inc.
7.50%, 11/01/23			172		179,172
7.50%, 05/15/25			492		524,270
8.00%, 11/01/26			57		60,750
7.50%, 09/15/27			253		270,710
6.25%, 01/15/28			133		136,618
					1,952,334
IT Services — 0.6%
Banff Merger Sub, Inc., 9.75%, 09/01/26(a)			951		1,005,302
Booz Allen Hamilton, Inc., 3.88%, 09/01/28(a)			279		286,407
BY Crown Parent LLC/BY Bond Finance, Inc., 4.25%, 01/31/26(a)			372		378,743
Camelot Finance SA, 4.50%, 11/01/26(a)			342		348,840
Castle U.S. Holding Corp., 9.50%, 02/15/28(a)			202		192,658
Dun & Bradstreet Corp.(a)
6.88%, 08/15/26			269		288,919
10.25%, 02/15/27			131		148,030
Fair Isaac Corp., 4.00%, 06/15/28(a)			107		110,344
Fidelity National Information Services, Inc., 4.50%, 08/15/46			1,000		1,243,478
Presidio Holdings, Inc., 4.88%, 02/01/27(a)			172		173,720
Rackspace Technology Global, Inc., 8.63%, 11/15/24(a)			109		114,145
Science Applications International Corp., 4.88%, 04/01/28(a)			173		175,645
Tempo Acquisition LLC/Tempo Acquisition Finance Corp., 6.75%, 06/01/25(a)			575		586,851
					5,053,082
Leisure Products — 0.1%
Mattel, Inc.
6.75%, 12/31/25(a)			298		314,390
5.88%, 12/15/27(a)			77		82,871
6.20%, 10/01/40			16		15,503
5.45%, 11/01/41			82		76,680
					489,444
Machinery — 0.2%
Colfax Corp.(a)
6.00%, 02/15/24			60		62,175
6.38%, 02/15/26			174		184,440
Mueller Water Products, Inc., 5.50%, 06/15/26(a)			70		72,275

Security		Par (000)		Value
Machinery (continued)
Platin 1426 GmbH, 5.38%, 06/15/23	EUR		100	$	110,210
RBS Global, Inc./Rexnord LLC, 4.88%, 12/15/25(a)	USD		114		115,568
Stevens Holding Co., Inc., 6.13%, 10/01/26(a)			90		96,300
Terex Corp., 5.63%, 02/01/25(a)			198		198,495
Titan Acquisition Ltd/Titan Co-Borrower LLC, 7.75%, 04/15/26(a)			388		386,060
Vertical Midco GmbH, 4.38%, 07/15/27	EUR		100		119,062
Vertical US Newco, Inc., 5.25%, 07/15/27(a)	USD		266		276,444
					1,621,029
Media — 5.0%
Altice Financing SA
7.50%, 05/15/26(a)			402		425,529
3.00%, 01/15/28	EUR		100		108,665
5.00%, 01/15/28(a)	USD		239		232,129
Altice France Holding SA
8.00%, 05/15/27	EUR		100		124,280
10.50%, 05/15/27(a)	USD		1,088		1,209,040
6.00%, 02/15/28(a)			257		245,124
AMC Networks, Inc.
5.00%, 04/01/24			2		2,045
4.75%, 08/01/25			135		139,549
Block Communications, Inc., 4.88%, 03/01/28(a)			87		88,740
CCO Holdings LLC/CCO Holdings Capital Corp.(a)
5.13%, 05/01/27			130		136,789
5.88%, 05/01/27			18		18,898
5.00%, 02/01/28			189		198,450
5.38%, 06/01/29			147		159,311
4.75%, 03/01/30			152		160,930
4.50%, 08/15/30			607		637,377
4.25%, 02/01/31			575		595,966
4.50%, 05/01/32			720		751,500
Charter Communications Operating LLC/Charter Communications Operating Capital, 4.91%, 07/23/25			4,700		5,434,247
Clear Channel International BV, 6.63%, 08/01/25(a)			256		261,837
Clear Channel Worldwide Holdings, Inc.
9.25%, 02/15/24			395		382,913
5.13%, 08/15/27(a)			932		894,953
Comcast Cable Communications Holdings, Inc., 9.46%, 11/15/22			2,600		3,095,604
Comcast Corp.
6.45%, 03/15/37			790		1,193,115
4.60%, 08/15/45			2,000		2,579,996
4.70%, 10/15/48			3,000		4,000,801
Connect Finco Sarl/Connect US Finco LLC, 6.75%, 10/01/26(a)			1,293		1,297,073
CSC Holdings LLC
5.25%, 06/01/24			166		178,035
5.75%, 01/15/30(a)			443		470,687
4.13%, 12/01/30(a)			401		408,719
4.63%, 12/01/30(a)			897		903,727
Diamond Sports Group LLC/Diamond Sports Finance Co., 5.38%, 08/15/26(a)			366		258,945
Discovery Communications LLC
3.25%, 04/01/23			1,850		1,929,702
3.45%, 03/15/25			210		229,662
DISH DBS Corp.
6.75%, 06/01/21			443		454,075
5.88%, 07/15/22			739		768,560
5.00%, 03/15/23			284		289,680

10

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Media (continued)
DISH DBS Corp. (continued)
7.75%, 07/01/26	USD		374	$	411,161
DISH Network Corp.(l)
2.38%, 03/15/24			210		188,989
3.38%, 08/15/26			259		237,761
Entercom Media Corp., 6.50%, 05/01/27(a)			173		150,510
GCI LLC(a)
6.63%, 06/15/24			93		99,752
4.75%, 10/15/28(k)			61		61,763
Hughes Satellite Systems Corp., 5.25%, 08/01/26			70		74,421
iHeartCommunications, Inc.
6.38%, 05/01/26			91		95,184
5.25%, 08/15/27(a)			66		64,350
4.75%, 01/15/28(a)			50		47,122
Lamar Media Corp., 4.00%, 02/15/30(a)			7		7,000
LCPR Senior Secured Financing DAC, 6.75%, 10/15/27(a)			200		209,000
Liberty Broadband Corp., 2.75%, 09/30/50(a)(l)			431		463,639
Lions Gate Capital Holdings LLC(a)
6.38%, 02/01/24			16		15,840
5.88%, 11/01/24			109		107,093
Live Nation Entertainment, Inc., 6.50%, 05/15/27(a)			656		707,981
Meredith Corp., 6.88%, 02/01/26			23		19,205
Midcontinent Communications/Midcontinent Finance Corp., 5.38%, 08/15/27(a)			108		110,970
Network i2i Ltd., (5 year CMT + 4.27%), 5.65%(g)(h)			250		248,516
Outfront Media Capital LLC/Outfront Media Capital Corp., 5.00%, 08/15/27(a)			217		211,575
Qualitytech LP/QTS Finance Corp.(a)
4.75%, 11/15/25			31		32,153
3.88%, 10/01/28(k)			196		197,294
Radiate Holdco LLC/Radiate Finance, Inc.(a)
4.50%, 09/15/26			411		410,914
6.50%, 09/15/28			670		686,591
Sable International Finance Ltd., 5.75%, 09/07/27(a)			200		208,576
SES SA, (5 year EUR Swap + 4.66%), 4.63%(g)(h)	EUR		100		118,564
Sirius XM Radio, Inc.(a)
5.00%, 08/01/27	USD		211		219,967
5.50%, 07/01/29			279		299,227
4.13%, 07/01/30			199		202,731
Summer BC Holdco B Sarl, 5.75%, 10/31/26	EUR		100		114,924
TCI Communications, Inc., 7.88%, 02/15/26	USD		610		824,058
TEGNA, Inc., 5.50%, 09/15/24(a)			19		19,350
Telenet Finance Luxembourg Notes Sarl, 5.50%, 03/01/28(a)			200		210,000
Telesat Canada/Telesat LLC, 4.88%, 06/01/27(a)			297		298,203
Terrier Media Buyer, Inc., 8.88%, 12/15/27(a)			398		400,985
Univision Communications, Inc., 5.13%, 02/15/25(a)			52		49,270
ViacomCBS, Inc., 5.85%, 09/01/43			645		818,180
Videotron Ltd., 5.13%, 04/15/27(a)			227		238,804
Virgin Media Secured Finance PLC(a)
5.50%, 05/15/29			400		429,380
4.50%, 08/15/30			233		239,394
Virgin Media Vendor Financing Notes IV DAC, 5.00%, 07/15/28(a)			507		505,732
VZ Vendor Financing BV, 2.50%, 01/31/24	EUR		100		114,900
Walt Disney Co., 7.63%, 11/30/28	USD		385		550,799
WMG Acquisition Corp.(a)
5.50%, 04/15/26			11		11,413
3.88%, 07/15/30			57		58,778

Security		Par (000)		Value
Media (continued)
WMG Acquisition Corp.(a) (continued)
3.00%, 02/15/31	USD		46	$	44,724
Zayo Group Holdings, Inc.(a)
4.00%, 03/01/27			562		553,134
6.13%, 03/01/28			762		786,536
Ziggo Bond Co. BV(a)
6.00%, 01/15/27			150		155,063
5.13%, 02/28/30			200		202,460
Ziggo BV, 5.50%, 01/15/27(a)			282		295,395
					43,095,984
Metals & Mining — 0.9%
ABJA Investment Co. Pte Ltd.
5.95%, 07/31/24			250		256,248
5.45%, 01/24/28			200		193,166
Arconic Corp.(a)
6.00%, 05/15/25			247		263,777
6.13%, 02/15/28			151		155,058
Big River Steel LLC/BRS Finance Corp., 6.63%, 01/31/29(a)			487		492,430
Constellium SE(a)
6.63%, 03/01/25			264		270,105
5.88%, 02/15/26			519		532,515
5.63%, 06/15/28			250		255,175
Freeport-McMoRan, Inc.
4.38%, 08/01/28			330		341,205
4.63%, 08/01/30			339		356,442
5.40%, 11/14/34			245		271,031
5.45%, 03/15/43			821		910,308
Gold Fields Orogen Holdings BVI Ltd., 5.13%, 05/15/24(a)			200		217,250
Grinding Media, Inc./Moly-Cop AltaSteel Ltd., 7.38%, 12/15/23(a)			164		166,050
JSW Steel Ltd., 5.95%, 04/18/24			200		205,800
Kaiser Aluminum Corp.(a)
6.50%, 05/01/25			68		70,094
4.63%, 03/01/28			38		35,435
New Gold, Inc., 7.50%, 07/15/27(a)			289		307,785
Nexa Resources SA, 5.38%, 05/04/27(a)			299		311,334
Novelis Corp.(a)
5.88%, 09/30/26			356		365,790
4.75%, 01/30/30			646		634,514
Rio Tinto Finance USA PLC, 4.75%, 03/22/42			400		543,058
thyssenkrupp AG, 2.88%, 02/22/24	EUR		51		56,073
Vale Overseas Ltd.
6.25%, 08/10/26	USD		133		157,273
3.75%, 07/08/30			120		123,270
Vedanta Resources Finance II PLC, 8.00%, 04/23/23			313		245,803
					7,736,989
Multiline Retail — 0.0%
Dufry One BV, 2.00%, 02/15/27	EUR		100		97,401
Future Retail Ltd., 5.60%, 01/22/25	USD		200		168,952
Nordstrom, Inc., 8.75%, 05/15/25(a)			91		99,723
					366,076
Multi-Utilities — 0.2%
KeySpan Gas East Corp., 5.82%, 04/01/41(a)			1,010		1,411,742
Office Supplies & Equipment — 0.0%
BY Crown Parent LLC, 7.38%, 10/15/24(a)			461		467,915

S C H E D U L E   O F   I N V E S  T M E N T S 11

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Offshore Drilling & Other Services — 0.0%
Entegris, Inc., 4.38%, 04/15/28(a)	USD		158	$	162,345
Oil, Gas & Consumable Fuels — 6.4%
Apache Corp.
4.88%, 11/15/27			141		133,245
5.10%, 09/01/40			160		143,300
5.25%, 02/01/42			20		17,900
4.75%, 04/15/43			216		192,105
4.25%, 01/15/44			125		106,250
5.35%, 07/01/49			48		42,360
Ascent Resources Utica Holdings LLC/ARU Finance Corp., 10.00%, 04/01/22(a)			718		707,230
Bioceanico Sovereign Certificate Ltd., 0.00%, 06/05/34(m)			149		111,226
Brand Industrial Services, Inc., 8.50%, 07/15/25(a)			250		236,250
Buckeye Partners LP
4.13%, 03/01/25(a)			179		170,050
4.50%, 03/01/28(a)			247		238,046
5.85%, 11/15/43			84		77,813
5.60%, 10/15/44			106		94,018
Burlington Resources LLC, 5.95%, 10/15/36			685		936,529
Callon Petroleum Co.
6.25%, 04/15/23			172		55,040
6.13%, 10/01/24			147		41,895
8.25%, 07/15/25			128		34,560
6.38%, 07/01/26			122		29,890
Cenovus Energy, Inc.
3.00%, 08/15/22			57		55,562
3.80%, 09/15/23			32		30,912
5.38%, 07/15/25			414		398,449
4.25%, 04/15/27			400		361,632
5.40%, 06/15/47			23		19,432
Centennial Resource Production LLC, 6.88%, 04/01/27(a)			156		63,570
Cheniere Energy Partners LP
5.63%, 10/01/26			72		74,880
4.50%, 10/01/29			354		363,123
5.25%, 10/01/25			33		33,759
Cheniere Energy, Inc., 4.63%, 10/15/28(a)			874		896,942
Citgo Holding, Inc., 9.25%, 08/01/24(a)			298		283,845
CNX Resources Corp., 7.25%, 03/14/27(a)			149		151,980
Comstock Resources, Inc.
7.50%, 05/15/25(a)			296		278,240
9.75%, 08/15/26			350		359,090
ConocoPhillips, 6.50%, 02/01/39			600		877,718
Continental Resources, Inc.
5.00%, 09/15/22			288		285,863
4.50%, 04/15/23			96		91,488
4.90%, 06/01/44			157		118,248
Crestwood Midstream Partners LP/Crestwood Midstream Finance Corp.
6.25%, 04/01/23			11		10,754
5.63%, 05/01/27(a)			158		141,137
CrownRock LP/CrownRock Finance, Inc., 5.63%, 10/15/25(a)			709		668,232
CVR Energy, Inc.(a)
5.25%, 02/15/25			146		127,020
5.75%, 02/15/28			48		40,800
DCP Midstream Operating LP
5.38%, 07/15/25			118		121,667
5.63%, 07/15/27			135		138,105

Security		Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
DCP Midstream Operating LP (continued)
5.13%, 05/15/29	USD		65	$	64,025
6.45%, 11/03/36(a)			148		141,825
6.75%, 09/15/37(a)			222		213,120
Devon Energy Corp., 5.85%, 12/15/25			1,000		1,120,697
Diamondback Energy, Inc., 3.50%, 12/01/29			306		296,644
eG Global Finance PLC
6.75%, 02/07/25(a)			241		246,724
6.25%, 10/30/25	EUR		142		165,739
8.50%, 10/30/25(a)	USD		200		210,500
Enbridge, Inc.(h)
(3 mo. LIBOR US + 3.64%), 6.25%, 03/01/78			1,935		1,964,025
Series 20-A, (5 year CMT + 5.31%), 5.75%, 07/15/80			950		983,981
Endeavor Energy Resources LP/EER Finance, Inc.(a)
6.63%, 07/15/25			128		131,520
5.50%, 01/30/26			463		459,527
5.75%, 01/30/28			239		240,195
Energy Transfer Operating LP
4.05%, 03/15/25			500		525,541
4.75%, 01/15/26			1,250		1,331,191
3.75%, 05/15/30			50		48,425
5.30%, 04/15/47			540		501,518
6.00%, 06/15/48			89		89,515
5.00%, 05/15/50			134		124,072
EnLink Midstream LLC, 5.38%, 06/01/29			50		40,500
EnLink Midstream Partners LP
4.40%, 04/01/24			144		129,600
4.15%, 06/01/25			10		8,610
4.85%, 07/15/26			20		17,302
5.60%, 04/01/44			122		78,385
5.05%, 04/01/45			19		12,065
Enterprise Products Operating LLC, 6.13%, 10/15/39			1,400		1,790,357
EOG Resources, Inc., 5.10%, 01/15/36			200		230,822
EQM Midstream Partners LP
6.00%, 07/01/25(a)			176		181,500
4.13%, 12/01/26			68		64,803
6.50%, 07/01/27(a)			240		254,405
EQT Corp.
3.90%, 10/01/27			224		206,220
8.75%, 02/01/30			111		130,980
Extraction Oil & Gas, Inc.(a)(e)(f)
7.38%, 05/15/24			213		53,250
5.63%, 02/01/26			306		76,500
Genesis Energy LP/Genesis Energy Finance Corp.
6.00%, 05/15/23			93		84,398
5.63%, 06/15/24			102		86,938
6.50%, 10/01/25			29		25,085
7.75%, 02/01/28			75		65,164
Geopark Ltd., 6.50%, 09/21/24			200		188,000
GMR Hyderabad International Airport Ltd., 4.25%, 10/27/27			200		177,000
Great Western Petroleum LLC/Great Western Finance Corp., 9.00%, 09/30/21(a)			390		227,175
Harvest Midstream I LP, 7.50%, 09/01/28(a)			197		196,015
Hess Corp., 4.30%, 04/01/27			1,100		1,148,925
Hess Midstream Operations LP, 5.63%, 02/15/26(a)			95		96,779
Hilong Holding Ltd., 8.25%, 09/26/22(e)(f)			200		99,750
HPCL-Mittal Energy Ltd., 5.45%, 10/22/26			200		201,562

12

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
Impulsora Pipeline LLC, 6.05%(d)	USD		1,723	$	1,855,733
Indigo Natural Resources LLC, 6.88%, 02/15/26(a)			310		301,717
Kinder Morgan, Inc.
4.30%, 06/01/25			1,750		1,971,100
5.05%, 02/15/46			1,750		1,988,505
Leviathan Bond Ltd., 5.75%, 06/30/23(a)			145		149,350
Marathon Petroleum Corp., 6.50%, 03/01/41			2,049		2,497,970
Matador Resources Co., 5.88%, 09/15/26			395		330,200
Medco Bell Pte Ltd., 6.38%, 01/30/27			250		216,406
MEG Energy Corp.(a)
7.00%, 03/31/24			194		180,420
6.50%, 01/15/25			387		379,616
7.13%, 02/01/27			4		3,587
MGM Growth Properties Operating Partnership LP/MGP Finance Co-Issuer, Inc., 4.63%, 06/15/25(a)			295		300,900
MPLX LP, 4.25%, 12/01/27			250		280,198
Murphy Oil Corp.
5.75%, 08/15/25			82		71,535
6.38%, 12/01/42			18		14,130
Murphy Oil USA, Inc., 4.75%, 09/15/29			106		112,890
New Enterprise Stone & Lime Co., Inc., 6.25%, 03/15/26(a)			53		54,590
New Fortress Energy, Inc., 6.75%, 09/15/25(a)			565		590,707
NGPL PipeCo LLC, 7.77%, 12/15/37(a)			138		175,661
NuStar Logistics LP, 6.00%, 06/01/26			99		99,279
Occidental Petroleum Corp.
2.70%, 08/15/22			308		287,786
2.90%, 08/15/24			170		144,233
5.55%, 03/15/26			1,500		1,358,865
3.20%, 08/15/26			13		10,311
3.00%, 02/15/27			3		2,353
4.30%, 08/15/39			323		223,891
6.20%, 03/15/40			482		399,385
4.50%, 07/15/44			127		90,884
4.63%, 06/15/45			314		226,865
6.60%, 03/15/46			18		15,503
4.40%, 04/15/46			294		208,802
4.10%, 02/15/47			33		22,278
4.20%, 03/15/48			199		136,812
4.40%, 08/15/49			71		49,707
Parsley Energy LLC/Parsley Finance Corp.(a)
5.38%, 01/15/25			53		52,868
5.25%, 08/15/25			40		39,600
5.63%, 10/15/27			195		194,025
4.13%, 02/15/28			192		180,480
PBF Holding Co. LLC/PBF Finance Corp., 9.25%, 05/15/25(a)			24		24,600
PDC Energy, Inc.
1.13%, 09/15/21(l)			132		125,182
6.13%, 09/15/24			117		111,442
6.25%, 12/01/25			34		31,620
5.75%, 05/15/26			164		152,282
Pertamina Persero PT, 3.65%, 07/30/29			239		255,805
Petrobras Global Finance BV
5.30%, 01/27/25			178		192,930
8.75%, 05/23/26			222		277,569
6.00%, 01/27/28			18		19,931
5.60%, 01/03/31			309		330,077
Petroleos Mexicanos, 6.88%, 08/04/26			517		497,561

Security		Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
Puma International Financing SA, 5.13%, 10/06/24(a)	USD		200	$	177,000
QEP Resources, Inc.
5.38%, 10/01/22			198		162,360
5.25%, 05/01/23			128		93,120
5.63%, 03/01/26			107		60,723
Range Resources Corp.
5.88%, 07/01/22			30		29,100
5.00%, 08/15/22			170		163,999
5.00%, 03/15/23(i)			122		115,900
Rattler Midstream LP, 5.63%, 07/15/25(a)			159		160,192
Sabine Pass Liquefaction LLC
5.88%, 06/30/26			1,750		2,069,365
4.50%, 05/15/30(a)			185		208,394
Saudi Arabian Oil Co., 3.50%, 04/16/29			200		219,437
SM Energy Co.
6.13%, 11/15/22			12		9,336
10.00%, 01/15/25(a)			356		338,200
Southwestern Energy Co.
4.10%, 03/15/22			153		151,087
7.50%, 04/01/26			37		36,168
8.38%, 09/15/28			65		63,870
Stoneway Capital Corp., 10.00%, 03/01/27(a)(e)(f)			469		188,770
Suncor Energy, Inc., 6.50%, 06/15/38			1,000		1,280,288
Sunoco Logistics Partners Operations LP
3.90%, 07/15/26			310		318,323
5.40%, 10/01/47			92		86,863
Sunoco LP/Sunoco Finance Corp.
4.88%, 01/15/23			127		127,635
5.50%, 02/15/26			21		20,974
6.00%, 04/15/27			38		39,045
5.88%, 03/15/28			4		4,090
Tallgrass Energy Partners LP/Tallgrass Energy Finance Corp., 5.50%, 09/15/24(a)			238		223,720
Targa Resources Partners LP/Targa Resources Partners Finance Corp.
5.13%, 02/01/25			95		94,763
5.88%, 04/15/26			111		113,964
5.38%, 02/01/27			2		2,011
6.50%, 07/15/27			105		109,462
5.00%, 01/15/28			133		129,675
6.88%, 01/15/29			417		446,065
5.50%, 03/01/30(a)			230		230,241
4.88%, 02/01/31(a)			200		193,685
TransCanada PipeLines Ltd., 4.63%, 03/01/34			500		590,468
Transocean, Inc., 11.50%, 01/30/27(a)			81		33,226
Ultrapar International SA, 5.25%, 06/06/29(a)			216		224,302
Viper Energy Partners LP, 5.38%, 11/01/27(a)			136		133,960
Western Midstream Operating LP
5.38%, 06/01/21			1,425		1,435,687
4.00%, 07/01/22			29		29,172
4.10%, 02/01/25			57		54,293
3.95%, 06/01/25			118		110,896
4.65%, 07/01/26			89		86,553
4.75%, 08/15/28			44		42,305
5.05%, 02/01/30			112		109,006
5.45%, 04/01/44			222		189,810
5.30%, 03/01/48			253		203,665
5.50%, 08/15/48			44		36,300
6.25%, 02/01/50			213		197,291

S C H E D U L E   O F   I N V E S  T M E N T S 13

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
Williams Cos., Inc.
3.90%, 01/15/25	USD		1,150	$	1,256,657
4.00%, 09/15/25			750		831,466
WPX Energy, Inc.
8.25%, 08/01/23			43		48,590
5.25%, 09/15/24			75		78,172
5.75%, 06/01/26			16		16,560
5.25%, 10/15/27			81		82,215
5.88%, 06/15/28			139		145,255
4.50%, 01/15/30			286		281,177
YPF SA, 8.50%, 07/28/25			249		178,891
					55,392,912
Personal Products — 0.0%
Edgewell Personal Care Co., 5.50%, 06/01/28(a)			120		126,268
Pharmaceuticals — 2.4%
AbbVie, Inc.
5.00%, 12/15/21(a)			758		790,403
3.80%, 03/15/25(a)			3,250		3,603,738
3.60%, 05/14/25			870		964,306
3.20%, 05/14/26			500		550,462
4.55%, 03/15/35(a)			2,140		2,630,988
4.45%, 05/14/46			2,095		2,494,914
Bausch Health Americas, Inc., 8.50%, 01/31/27(a)			745		818,569
Bausch Health Cos., Inc.
5.50%, 03/01/23(a)			98		97,632
4.50%, 05/15/23	EUR		276		320,574
5.88%, 05/15/23(a)	USD		6		5,970
9.00%, 12/15/25(a)			362		393,784
5.75%, 08/15/27(a)			231		245,149
7.00%, 01/15/28(a)			146		154,760
5.00%, 01/30/28(a)			132		128,205
6.25%, 02/15/29(a)			357		367,196
7.25%, 05/30/29(a)			274		295,235
5.25%, 01/30/30(a)			94		92,590
Catalent Pharma Solutions, Inc.
4.88%, 01/15/26(a)			49		49,980
5.00%, 07/15/27(a)			22		22,880
2.38%, 03/01/28	EUR		100		112,524
Charles River Laboratories International, Inc.(a)
5.50%, 04/01/26	USD		154		162,085
4.25%, 05/01/28			184		193,106
CVS Health Corp.
5.13%, 07/20/45			700		884,442
5.05%, 03/25/48			1,221		1,558,495
Elanco Animal Health, Inc., 5.90%, 08/28/28			6		6,930
Endo Dac/Endo Finance LLC/Endo Finco, Inc.(a)
9.50%, 07/31/27			91		95,095
6.00%, 06/30/28			91		66,885
IQVIA, Inc.(a)
5.00%, 10/15/26			280		292,600
5.00%, 05/15/27			266		278,920
Jaguar Holding Co. II/PPD Development LP(a)
4.63%, 06/15/25			363		373,890
5.00%, 06/15/28			339		353,831
MEDNAX, Inc.(a)
5.25%, 12/01/23			107		108,337
6.25%, 01/15/27			169		175,331
Mylan NV, 3.95%, 06/15/26			750		843,772

Security		Par (000)		Value
Pharmaceuticals (continued)
Nidda Healthcare Holding GmbH, 3.50%, 09/30/24	EUR		100	$	114,173
Par Pharmaceutical, Inc., 7.50%, 04/01/27(a)	USD		710		743,853
Synlab Bondco PLC, (3 mo. Euribor + 4.75%), 4.75%, 07/01/25(b)	EUR		100		118,494
					20,510,098
Producer Durables: Miscellaneous — 0.8%
ACI Worldwide, Inc., 5.75%, 08/15/26(a)	USD		433		457,274
Boxer Parent Co., Inc.
6.50%, 10/02/25	EUR		100		120,894
7.13%, 10/02/25(a)	USD		263		280,900
9.13%, 03/01/26(a)			428		453,680
Genesys Telecommunications Laboratories, Inc./Greeneden Lux 3 Sarl/Greeneden US Ho, 10.00%, 11/30/24(a)			779		824,961
Open Text Corp., 3.88%, 02/15/28(a)			216		218,497
Open Text Holdings, Inc., 4.13%, 02/15/30(a)			202		207,745
Oracle Corp., 5.38%, 07/15/40(i)			3,025		4,219,067
Sophia LP/Sophia Finance, Inc., 9.00%, 09/30/23(a)			159		159,095
					6,942,113
Professional Services(a) — 0.1%
Gartner, Inc.
4.50%, 07/01/28			230		241,788
3.75%, 10/01/30			286		289,303
					531,091
Real Estate Management & Development — 2.6%
ADLER Real Estate AG, 3.00%, 04/27/26	EUR		100		114,900
Agile Group Holdings Ltd.
6.70%, 03/07/22	USD		450		460,687
(5 year CMT + 11.29%), 7.88%(g)(h)			200		202,500
Central China Real Estate Ltd.
6.88%, 08/08/22			200		200,500
7.25%, 04/24/23			200		200,500
7.65%, 08/27/23			295		295,737
CFLD Cayman Investment Ltd.
8.63%, 02/28/21			400		400,000
6.90%, 01/13/23			200		189,000
8.60%, 04/08/24			200		185,188
China Aoyuan Group Ltd.
7.50%, 05/10/21			200		201,356
7.95%, 02/19/23			450		465,750
China Evergrande Group
8.25%, 03/23/22			200		178,000
9.50%, 04/11/22			200		180,000
11.50%, 01/22/23			450		398,953
12.00%, 01/22/24			250		219,219
China SCE Group Holdings Ltd.
8.75%, 01/15/21			200		201,000
7.25%, 04/19/23			200		203,063
7.38%, 04/09/24			200		201,688
CIFI Holdings Group Co. Ltd.
6.55%, 03/28/24			200		206,000
6.45%, 11/07/24			200		204,500
Consus Real Estate AG, 9.63%, 05/15/24	EUR		100		124,638
Country Garden Holdings Co. Ltd.
6.50%, 04/08/24	USD		200		215,562
6.15%, 09/17/25			200		221,750
5.13%, 01/14/27			200		211,812

14

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Real Estate Management & Development (continued)
Easy Tactic Ltd.
8.75%, 01/10/21	USD		200	$	198,000
9.13%, 07/28/22			200		185,750
8.13%, 02/27/23			200		176,000
Fantasia Holdings Group Co. Ltd.
8.38%, 03/08/21			200		198,813
11.75%, 04/17/22			200		204,875
12.25%, 10/18/22			200		205,500
Five Point Operating Co. LP/Five Point Capital Corp., 7.88%, 11/15/25(a)			150		149,925
Global Prime Capital Pte Ltd., 5.50%, 10/18/23			200		195,750
Greenland Global Investment Ltd.
6.75%, 06/25/22			200		200,000
5.60%, 11/13/22			200		194,313
Hopson Development Holdings Ltd., 7.50%, 06/27/22			200		199,500
Howard Hughes Corp.(a)
5.38%, 03/15/25			30		30,483
5.38%, 08/01/28			227		226,884
Kaisa Group Holdings Ltd.
11.25%, 04/09/22			200		204,125
11.95%, 10/22/22			200		206,500
11.50%, 01/30/23			400		407,625
10.88%, 07/23/23			200		198,500
KWG Group Holdings Ltd.
7.88%, 08/09/21			200		204,688
7.88%, 09/01/23			200		205,500
7.40%, 03/05/24			200		205,563
Logan Group Co. Ltd.
6.50%, 07/16/23			400		407,375
6.90%, 06/09/24			200		205,000
5.75%, 01/14/25			200		200,625
New Metro Global Ltd.
6.50%, 04/23/21			200		200,978
6.80%, 08/05/23			200		203,000
Powerlong Real Estate Holdings Ltd., 7.13%, 11/08/22			200		206,000
Redsun Properties Group Ltd., 9.95%, 04/11/22			200		204,938
RKPF Overseas Ltd., Series 2019-A, 6.70%, 09/30/24			513		528,230
Ronshine China Holdings Ltd.
11.25%, 08/22/21			200		208,000
10.50%, 03/01/22			200		207,625
8.95%, 01/22/23			200		204,375
Scenery Journey Ltd.
11.00%, 11/06/20			200		199,125
11.50%, 10/24/22			219		198,195
13.00%, 11/06/22			200		184,875
Seazen Group Ltd., 6.45%, 06/11/22			200		201,500
Shimao Group Holdings Ltd., 5.60%, 07/15/26			200		218,562
Shui On Development Holding Ltd., 5.75%, 11/12/23			200		199,500
Sunac China Holdings Ltd.
7.88%, 02/15/22			200		203,250
7.25%, 06/14/22			200		199,875
7.95%, 10/11/23			200		201,688
7.50%, 02/01/24			200		200,700
Theta Capital Pte Ltd., 8.13%, 01/22/25			200		174,875
Times China Holdings Ltd., 6.75%, 07/16/23			513		524,062

Security		Par (000)		Value
Real Estate Management & Development (continued)
Unique Pub Finance Co. PLC
Series A4, 5.66%, 06/30/27	GBP		774	$	1,024,784
Series M, 7.40%, 03/28/24			3,000		4,025,873
Wanda Group Overseas Ltd., 7.50%, 07/24/22	USD		200		192,750
Yango Justice International Ltd., 10.00%, 02/12/23			200		208,687
Yanlord Land HK Co. Ltd.
6.75%, 04/23/23			200		206,812
6.80%, 02/27/24			200		209,500
Yuzhou Group Holdings Co. Ltd.
8.63%, 01/23/22			200		207,500
8.50%, 02/04/23			200		208,687
8.50%, 02/26/24			200		207,375
8.38%, 10/30/24			200		206,812
Zhenro Properties Group Ltd.
9.15%, 03/08/22			200		206,750
8.70%, 08/03/22			200		204,500
					22,272,980
Road & Rail — 0.8%
Autostrade per l’Italia SpA, 5.88%, 06/09/24	EUR		100		130,142
Burlington Northern Santa Fe LLC, 5.75%, 05/01/40	USD		1,890		2,731,069
CSX Corp., 4.75%, 05/30/42			350		448,523
Lima Metro Line Finance Ltd.(a)
5.88%, 07/05/34(k)			2,661		3,241,197
4.35%, 04/05/36			200		220,500
					6,771,431
Semiconductors & Semiconductor Equipment — 0.9%
ams AG, 6.00%, 07/31/25	EUR		100		123,670
Analog Devices, Inc., 3.90%, 12/15/25	USD		470		537,373
Broadcom Corp./Broadcom Cayman Finance Ltd., 3.88%, 01/15/27			2,850		3,157,530
Broadcom, Inc.
3.46%, 09/15/26			735		804,912
4.30%, 11/15/32			405		462,668
Microchip Technology, Inc.
1.63%, 02/15/25(l)			53		118,064
4.25%, 09/01/25(a)			635		658,850
ON Semiconductor Corp.
1.00%, 12/01/20(l)			168		200,760
3.88%, 09/01/28(a)			220		223,097
Qorvo, Inc.
5.50%, 07/15/26			19		20,151
3.38%, 04/01/31(a)			235		238,819
QUALCOMM, Inc., 4.65%, 05/20/35			250		336,030
Sensata Technologies BV, 5.00%, 10/01/25(a)			330		354,750
Sensata Technologies, Inc.(a)
4.38%, 02/15/30			54		56,700
3.75%, 02/15/31			168		166,950
					7,460,324
Software — 1.1%
ANGI Group LLC, 3.88%, 08/15/28(a)			174		172,260
Black Knight InfoServ LLC, 3.63%, 09/01/28(a)			255		257,709
CDK Global, Inc.
4.88%, 06/01/27			281		295,753
5.25%, 05/15/29(a)			44		46,860
Microsoft Corp., 3.50%, 11/15/42			4,000		4,915,823
MSCI, Inc.(a)
4.00%, 11/15/29			51		53,550
3.63%, 09/01/30			61		62,573
3.88%, 02/15/31			361		376,234

S C H E D U L E   O F   I N V E S  T M E N T S 15

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Software (continued)
Nuance Communications, Inc., 5.63%, 12/15/26	USD		169	$	178,295
PTC, Inc.(a)
3.63%, 02/15/25			11		11,165
4.00%, 02/15/28			126		129,506
Solera LLC/Solera Finance, Inc., 10.50%, 03/01/24(a)			1,120		1,170,400
SS&C Technologies, Inc., 5.50%, 09/30/27(a)			868		922,441
Tempo Acquisition LLC/Tempo Acquisition Finance Corp., 5.75%, 06/01/25(a)			168		175,980
Veritas US, Inc./Veritas Bermuda Ltd., 7.50%, 09/01/25(a)			401		413,531
					9,182,080
Specialty Retail — 0.2%
Gap, Inc., 8.88%, 05/15/27(a)			107		121,712
L Brands, Inc.
6.88%, 07/01/25(a)			186		200,880
6.88%, 11/01/35			215		211,841
6.75%, 07/01/36			49		48,020
PetSmart, Inc.(a)
7.13%, 03/15/23			219		220,916
5.88%, 06/01/25			196		200,626
Staples, Inc., 7.50%, 04/15/26(a)			394		364,119
Tendam Brands SAU, (3 mo. Euribor + 5.25%), 5.25%, 09/15/24(b)	EUR		100		95,100
					1,463,214
Technology Hardware, Storage & Peripherals — 0.6%
Apple, Inc., 4.65%, 02/23/46	USD		2,400		3,349,712
Hewlett Packard Enterprise Co., 4.90%, 10/15/25			1,500		1,716,295
					5,066,007
Telecommunications Equipment — 0.1%
Nokia OYJ
4.38%, 06/12/27			31		32,918
6.63%, 05/15/39			88		109,016
ViaSat, Inc.(a)
5.63%, 04/15/27			376		386,810
6.50%, 07/15/28			249		249,361
					778,105
Textiles, Apparel & Luxury Goods — 0.0%
Hanesbrands, Inc., 5.38%, 05/15/25(a)			84		88,620
Levi Strauss & Co., 5.00%, 05/01/25			32		32,740
William Carter Co., 5.63%, 03/15/27(a)			40		41,750
					163,110
Thrifts & Mortgage Finance(a) — 0.0%
Nationstar Mortgage Holdings, Inc.
6.00%, 01/15/27			165		168,194
5.50%, 08/15/28			169		168,789
					336,983
Tobacco — 1.1%
Altria Group, Inc.
9.95%, 11/10/38			516		821,121
10.20%, 02/06/39			894		1,507,813
5.38%, 01/31/44			2,000		2,487,922
3.88%, 09/16/46			1,250		1,284,903
Reynolds American, Inc.
4.45%, 06/12/25			635		714,590

Security		Par (000)		Value
Tobacco (continued)
Reynolds American, Inc. (continued)
7.00%, 08/04/41	USD		1,000	$	1,294,608
5.85%, 08/15/45			1,500		1,822,717
					9,933,674
Transportation Infrastructure — 0.4%
Aeropuertos Dominicanos Siglo XXI SA, 6.75%, 03/30/29(a)			200		178,000
FedEx Corp., 4.75%, 11/15/45			1,250		1,546,591
I 595 Express LLC, 3.31%, 12/31/31(b)(d)			779		852,201
Transurban Finance Co. Pty Ltd., 4.13%, 02/02/26(a)			580		648,127
					3,224,919
Utilities — 1.2%
AES Panama Generation Holdings SRL, 4.38%, 05/31/30(a)			200		204,938
Centrais Eletricas Brasileiras SA(a)
3.63%, 02/04/25			281		279,946
4.63%, 02/04/30			237		236,407
ContourGlobal Power Holdings SA, 4.13%, 08/01/25	EUR		100		118,101
Electricite de France SA(a)
5.60%, 01/27/40	USD		2,800		3,646,950
(10 year USD Swap + 3.71%), 5.25%(g)(h)			4,200		4,347,000
Genneia SA, 8.75%, 01/20/22(a)			347		268,600
Inkia Energy Ltd., 5.88%, 11/09/27(a)			200		208,812
Mong Doung Finacial Holdings BV, 5.13%, 05/07/29			250		253,828
Pattern Energy Operations LP/Pattern Energy Operations, Inc., 4.50%, 08/15/28(a)			385		399,437
Vistra Operations Co. LLC(a)
5.63%, 02/15/27			184		194,157
5.00%, 07/31/27			7		7,336
					10,165,512
Wireless Telecommunication Services — 1.2%
Altice France SA(a)
7.38%, 05/01/26			581		608,830
8.13%, 02/01/27			678		739,020
5.50%, 01/15/28			391		395,887
Comunicaciones Celulares SA Via Comcel Trust, 6.88%, 02/06/24(a)			200		202,254
GLP Capital LP/GLP Financing II, Inc., 5.30%, 01/15/29			30		33,410
Gogo Intermediate Holdings LLC/Gogo Finance Co., Inc., 9.88%, 05/01/24(a)			10		10,690
Matterhorn Telecom SA, 4.00%, 11/15/27	EUR		100		115,486
Rogers Communications, Inc., 7.50%, 08/15/38	USD		2,325		3,625,172
SBA Communications Corp.
4.88%, 09/01/24			190		194,731
3.88%, 02/15/27(a)			843		855,645
Sprint Corp.
7.88%, 09/15/23			174		199,883
7.13%, 06/15/24			307		353,237
7.63%, 02/15/25			197		230,490
7.63%, 03/01/26			397		479,729
T-Mobile USA, Inc.
4.50%, 02/01/26			87		89,645
4.75%, 02/01/28			79		84,509
Uniti Group LP/Uniti Group Finance, Inc./CSL Capital LLC, 8.25%, 10/15/23			150		147,750

16

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Wireless Telecommunication Services (continued)
VICI Properties LP/VICI Note Co., Inc.(a)
3.50%, 02/15/25	USD		159	$	157,411
4.25%, 12/01/26			541		543,516
3.75%, 02/15/27			277		272,369
4.63%, 12/01/29			320		325,600
4.13%, 08/15/30			430		423,012
VTR Comunicaciones SpA, 5.13%, 01/15/28(a)			200		206,119
					10,294,395
Total Corporate Bonds — 62.3% (Cost: $492,325,177)					541,606,833
Floating Rate Loan Interests(b)
Aerospace & Defense — 0.0%
Spirit Aerosystems, Inc., 2020 Term Loan B, 01/31/25(d)(n)			126		125,685
Airlines — 0.1%
Delta Air Lines, Inc., 2020 1st Lien Term Loan B, 09/16/27(n)			201		202,329
JetBlue Airways Corp., Term Loan, (3 mo. LIBOR + 5.25%, 1.00% Floor), 6.25%, 06/17/24			37		36,225
Mileage Plus Holdings LLC, 2020 Term Loan B, (3 mo. LIBOR + 5.25%, 1.00% Floor), 6.25%, 06/20/27			117		118,821
					357,375
Auto Components — 0.0%
Panther BF Aggregator 2 LP, USD Term Loan B, (1 mo. LIBOR + 3.50%), 3.65%, 04/30/26			173		168,134
Banks — 0.0%
Capri Finance LLC, USD 2017 1st Lien Term Loan, (3 mo. LIBOR + 3.00%), 3.26%, 11/01/24			119		118,526
Building Products — 0.0%
CPG International, Inc., 2017 Term Loan, (3 mo. LIBOR + 3.75%, 1.00% Floor), 4.75%, 05/05/24			61		60,613
Capital Markets — 0.0%
Jefferies Finance LLC, 2019 Term Loan, (1 mo. LIBOR + 3.25%), 3.44%, 06/03/26(d)			146		139,318
Chemicals — 0.2%
Alpha 3 BV, 2017 Term Loan B1, (3 mo. LIBOR + 3.00%, 1.00% Floor), 4.00%, 01/31/24			637		626,622
Ascend Performance Materials Operations LLC, 2019 Term Loan B, (3 mo. LIBOR + 5.25%, 1.00% Floor), 6.25%, 08/27/26			254		253,369
Charter NEX US, Inc., Incremental Term Loan, (1 mo. LIBOR + 3.25%), 3.40%, 05/16/24			131		127,560
Illuminate Buyer LLC, Term Loan, (1 Week LIBOR + 4.00%), 4.15%, 06/30/27			183		181,285
Invictus US LLC, 2nd Lien Term Loan, (1 mo. LIBOR + 6.75%), 6.90%, 03/30/26			37		34,201
Momentive Performance Materials, Inc., Term Loan B, (1 mo. LIBOR + 3.25%), 3.41%, 05/15/24			124		118,042
					1,341,079
Commercial Services & Supplies — 0.2%
Advanced Disposal Services, Inc., Term Loan B3, (1 Week LIBOR + 2.25%), 3.00%, 11/10/23			29		29,181

Security		Par (000)		Value
Commercial Services & Supplies (continued)
Asurion LLC
2017 2nd Lien Term Loan, (1 mo. LIBOR + 6.50%), 6.65%, 08/04/25	USD		245	$	245,233
2017 Term Loan B4, (1 mo. LIBOR + 3.00%), 3.15%, 08/04/22			49		48,149
Dealer Tire LLC, 2020 Term Loan B, (1 mo. LIBOR + 4.25%), 4.40%, 12/12/25			49		47,417
Diamond (BC) BV, USD Term Loan, (3 mo. LIBOR + 3.00%), 3.26%, 09/06/24			429		399,529
GFL Environmental, Inc., 2018 USD Term Loan B, (3 mo. LIBOR + 3.00%, 1.00% Floor), 4.00%, 05/30/25			94		93,774
KAR Auction Services, Inc., 2019 Term Loan B6, (1 mo. LIBOR + 2.25%), 2.44%, 09/19/26(d)			34		32,917
Verscend Holding Corp., 2018 Term Loan B, (1 mo. LIBOR + 4.50%), 4.65%, 08/27/25			702		694,212
					1,590,412
Construction & Engineering — 0.1%
Brand Energy & Infrastructure Services, Inc., 2017 Term Loan, (3 mo. LIBOR + 4.25%, 1.00% Floor), 5.25%, 06/21/24			1,091		1,012,673
Construction Materials — 0.0%
Forterra Finance LLC, 2017 Term Loan B, (1 mo. LIBOR + 3.00%, 1.00% Floor), 4.00%, 10/25/23			52		51,153
Containers & Packaging — 0.0%
BWAY Holding Co., 2017 Term Loan B, (3 mo. LIBOR + 3.25%), 3.52%, 04/03/24			241		225,490
Diversified Consumer Services — 0.1%
Amentum Government Services Holdings LLC, Term Loan B, (1 mo. LIBOR + 3.50%), 3.65%, 01/31/27			42		41,179
Ascend Learning LLC, 2017 Term Loan B, (1 mo. LIBOR + 3.00%, 1.00% Floor), 4.00%, 07/12/24			59		58,212
BidFair MergerRight, Inc., Term Loan B, (1 mo. LIBOR + 5.50%, 1.00% Floor), 6.50%, 01/15/27			208		207,163
					306,554
Diversified Financial Services — 0.0%
Milano Acquisition Corp, Term Loan, 08/17/27(n)			307		303,163
Diversified Telecommunication Services — 0.2%
Frontier Communications Corp., 2017 Term Loan B1, (PRIME + 2.75%), 6.00%, 06/15/24			593		582,298
Intelsat Jackson Holdings SA
2017 Term Loan B4, (PRIME + 5.50%), 8.75%, 01/02/24			198		199,342
2017 Term Loan B5, (Fixed + 8.62%), 8.63%, 01/02/24			1,070		1,079,863
Northwest Fiber LLC, Term Loan B, (3 mo. LIBOR + 5.50%), 5.66%, 04/30/27			145		144,276
					2,005,779
Food Products — 0.0%
Chobani LLC, 2017 Term Loan B, (1 mo. LIBOR + 3.50%, 1.00% Floor), 4.50%, 10/10/23			161		158,544
Health Care Equipment & Supplies — 0.0%
Ortho-Clinical Diagnostics SA, 2018 Term Loan B, (1 mo. LIBOR + 3.25%), 3.41%, 06/30/25			88		84,324

S C H E D U L E   O F   I N V E S  T M E N T S 17

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Health Care Providers & Services — 0.1%
AHP Health Partners, Inc., 2018 Term Loan, (1 mo. LIBOR + 4.50%, 1.00% Floor), 5.50%, 06/30/25	USD		201	$	200,213
Da Vinci Purchaser Corp., 2019 Term Loan, (3 mo. LIBOR + 4.00%, 1.00% Floor), 5.24%, 01/08/27			121		118,791
Envision Healthcare Corp., 2018 1st Lien Term Loan, (1 mo. LIBOR + 3.75%), 3.90%, 10/10/25			407		292,620
Gentiva Health Services, Inc., 2020 Term Loan, (1 mo. LIBOR + 3.25%), 3.44%, 07/02/25			107		104,804
RegionalCare Hospital Partners Holdings, Inc., 2018 Term Loan B, (1 mo. LIBOR + 3.75%), 3.90%, 11/17/25			88		85,718
Sotera Health Holdings LLC, 2019 Term Loan, (3 mo. LIBOR + 4.50%, 1.00% Floor), 5.50%, 12/11/26			324		322,747
Surgery Center Holdings, Inc., 2020 Incremental Term Loan, (1 mo. LIBOR + 8.00%, 1.00% Floor), 9.00%, 09/03/24			12		12,044
					1,136,937
Health Care Services — 0.0%
Emerald TopCo., Inc., Term Loan, (3 mo. LIBOR + 3.50%), 3.76%, 07/25/26			106		102,024
Hotels, Restaurants & Leisure — 0.0%
Golden Nugget LLC, 2017 Incremental Term Loan B, (1 mo. LIBOR + 2.50%), 3.25%, 10/04/23			196		174,088
Independent Power and Renewable Electricity Producers — 0.0%
Calpine Corp., 2019 Term Loan B10, (1 mo. LIBOR + 2.00%), 2.15%, 08/12/26			27		26,189
Industrial Conglomerates — 0.0%
PSAV Holdings LLC, 2018 2nd Lien Term Loan, (3 mo. LIBOR + 7.25%, 1.00% Floor), 8.25%, 09/01/25			313		85,284
Sequa Mezzanine Holdings LLC, 2020 Extended Term Loan, (3 mo. LIBOR + 6.75%, 1.00% Floor), 7.75%, 11/28/23			114		108,193
					193,477
Insurance — 0.1%
Ryan Specialty Group LLC, Term Loan, (1 mo. LIBOR + 3.25%), 4.00%, 09/01/27			125		123,672
Sedgwick Claims Management Services, Inc.
2018 Term Loan B, (1 mo. LIBOR + 3.25%), 3.40%, 12/31/25			394		379,235
2019 Term Loan B, (1 mo. LIBOR + 4.00%), 4.15%, 09/03/26			142		139,912
2020 Term Loan B3, (1 mo. LIBOR + 4.25%, 1.00% Floor), 5.25%, 09/03/26			107		105,799
					748,618
Interactive Media & Services — 0.0%
Camelot US Acquisition 1 Co., 2020 Incremental Term Loan B, 10/31/26(n)			80		79,567
Rackspace Hosting, Inc., 2017 Incremental 1st Lien Term Loan, (3 mo. LIBOR + 3.00%, 1.00% Floor), 4.00%, 11/03/23			64		62,763
					142,330

Security		Par (000)		Value
IT Services — 0.2%
Greeneden US Holdings II LLC, 2018 USD Term Loan B, (1 mo. LIBOR + 3.25%), 3.40%, 12/01/23	USD		106	$	106,213
PUG LLC, USD Term Loan, (1 mo. LIBOR + 3.50%), 3.65%, 02/12/27			112		98,237
Sophia LP, 2020 1st Lien Term Loan, 09/22/27(n)			413		410,006
Veritas US, Inc., 2020 USD Term Loan B, (3 mo. LIBOR + 5.50%, 1.00% Floor), 6.50%, 09/01/25			587		573,712
					1,188,168
Life Sciences Tools & Services — 0.0%
Parexel International Corp., Term Loan B, (1 mo. LIBOR + 2.75%), 2.90%, 09/27/24			161		154,259
Machinery — 0.1%
MHI Holdings LLC, Term Loan B, (1 mo. LIBOR + 5.00%), 5.15%, 09/21/26(d)			131		130,355
Titan Acquisition Ltd., 2018 Term Loan B, (3 mo. LIBOR + 3.00%), 3.36%, 03/28/25			816		769,242
					899,597
Media — 0.2%
Altice Financing SA, 2017 USD Term Loan B, 07/15/25(n)			23		22,223
Altice France SA, 2018 Term Loan B13, (1 mo. LIBOR + 4.00%), 4.15%, 08/14/26			108		104,786
Clear Channel Outdoor Holdings, Inc., Term Loan B, (3 mo. LIBOR + 3.50%), 3.76%, 08/21/26			494		448,752
Connect Finco Sarl, Term Loan B, (1 mo. LIBOR + 0.45%, 1.00% Floor), 4.65%, 12/12/26			109		105,170
Intelsat Jackson Holdings SA, 2017 Term Loan B3, (PRIME + 4.75%), 8.00%, 11/27/23			123		123,828
Learfield Communications LLC, 2016 1st Lien Term Loan, (1 mo. LIBOR + 3.25%, 1.00% Floor), 4.25%, 12/01/23			47		39,639
Radiate Holdco LLC, 2020 Term Loan, (1 mo. LIBOR + 3.50%), 4.25%, 09/25/26			27		26,723
Terrier Media Buyer, Inc., Term Loan B, (1 mo. LIBOR + 4.25%), 4.40%, 12/17/26			102		99,041
Zayo Group Holdings, Inc., USD Term Loan, (1 mo. LIBOR + 3.00%), 3.15%, 03/09/27			432		418,491
					1,388,653
Oil, Gas & Consumable Fuels — 0.0%
CITGO Holding, Inc., 2019 Term Loan B, (3 mo. LIBOR + 7.00%, 1.00% Floor), 8.00%, 08/01/23			158		147,375
CONSOL Energy, Inc., 1st Lien Term Loan B, (1 mo. LIBOR + 4.50%, 1.00% Floor), 4.65%, 09/27/24			85		67,813
McDermott Technology Americas, Inc., 2020 Make Whole Term Loan, (1 mo. LIBOR + 3.00%), 3.15%, 06/30/24(d)			8		7,185
					222,373
Pharmaceuticals — 0.1%
Endo Luxembourg Finance Co. I Sarl, 2017 Term Loan B, (3 mo. LIBOR + 4.25%), 5.00%, 04/29/24			287		272,914
Jaguar Holding Co. II, 2018 Term Loan, (1 mo. LIBOR + 2.50%, 1.00% Floor), 3.50%, 08/18/22			160		159,370
					432,284

18

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Professional Services — 0.0%
Dun & Bradstreet Corp., Term Loan, (1 mo. LIBOR + 3.75%), 3.89%, 02/06/26	USD		288	$	285,074
Software — 0.2%
BMC Software Finance, Inc., 2018 USD Term Loan B, (1 mo. LIBOR + 4.25%), 4.40%, 10/02/25			202		195,792
By Crown Parent LLC, Term Loan B1, (1 mo. LIBOR + 3.00%, 1.00% Floor), 4.00%, 01/31/26			34		33,891
Castle US Holding Corp., USD Term Loan B, (3 mo. LIBOR + 3.75%), 3.97%, 01/31/27			137		130,851
Cypress Intermediate Holdings III, Inc., 2017 1st Lien Term Loan, (1 mo. LIBOR + 3.00%, 1.00% Floor), 4.00%, 04/29/24			30		29,790
Epicor Software Corp.
2020 2nd Lien Term Loan, (1 mo. LIBOR + 7.75%, 1.00% Floor), 8.75%, 07/31/28			62		63,550
2020 Term Loan, (1 mo. LIBOR + 4.25%, 1.00% Floor), 5.25%, 07/31/27			170		169,575
Financial & Risk US Holdings, Inc., 2018 USD Term Loan, (1 mo. LIBOR + 3.25%), 3.40%, 10/01/25			127		125,856
Informatica LLC
2020 USD 2nd Lien Term Loan, (Fixed + 7.13%), 7.13%, 02/25/25			278		281,939
2020 USD Term Loan B, (1 mo. LIBOR + 3.25%), 3.40%, 02/25/27			130		127,311
Mitchell International, Inc., 2017 1st Lien Term Loan, (1 mo. LIBOR + 3.25%), 3.40%, 11/29/24			88		84,220
Omnitracs, Inc., 2020 2nd Lien Term Loan, 09/10/28(n)			35		34,431
Renaissance Holding Corp., 2018 1st Lien Term Loan, (1 mo. LIBOR + 3.25%), 3.40%, 05/30/25			10		9,203
Sophia LP, 2017 Term Loan B, (1 mo. LIBOR + 3.25%, 1.00% Floor), 4.25%, 09/30/22			10		9,830
Tempo Acquisition LLC, 2020 Extended Term Loan, (1 mo. LIBOR + 3.25%), 3.75%, 11/02/26			21		20,066
Tibco Software Inc., 2020 2nd Lien Term Loan, (1 mo. LIBOR + 7.25%), 7.40%, 03/04/28			189		184,275
Ultimate Software Group, Inc.
2020 Incremental Term Loan B, (3 mo. LIBOR + 4.00%), 4.75%, 05/03/26			123		122,555
Term Loan B, (1 mo. LIBOR + 3.75%), 3.90%, 05/03/26			147		145,827
					1,768,962
Specialty Retail — 0.1%
PetSmart, Inc., Consenting Term Loan, (3 mo. LIBOR + 3.50%, 1.00% Floor), 4.50%, 03/11/22			433		431,939
Wireless Telecommunication Services — 0.0%
Xplornet Communications, Inc., 2020 Term Loan B, (1 mo. LIBOR + 4.75%), 4.90%, 06/10/27			188		183,663
Total Floating Rate Loan Interests — 2.0% (Cost: $17,960,574)					17,527,457

Security		Par (000)		Value
Foreign Agency Obligations
Bahrain — 0.1%
Bahrain Government International Bond, 6.75%, 09/20/29	USD		200	$	214,000
CBB International Sukuk Co. 7 SPC, 6.88%, 10/05/25			200		222,500
					436,500
Canada — 1.0%
CDP Financial, Inc., 5.60%, 11/25/39(a)			5,890		8,664,314
Colombia — 0.1%
Colombia Government International Bond
4.50%, 01/28/26			600		663,188
3.88%, 04/25/27			268		289,440
					952,628
Dominican Republic — 0.1%
Dominican Republic International Bond
5.50%, 01/27/25			379		402,687
5.95%, 01/25/27			230		246,747
4.88%, 09/23/32(a)			150		148,500
6.40%, 06/05/49			150		150,422
					948,356
Egypt — 0.1%
Egypt Government International Bond
5.58%, 02/21/23(a)			200		205,188
5.88%, 06/11/25			410		420,506
8.50%, 01/31/47(a)			400		386,000
					1,011,694
Iceland — 0.5%
Iceland Government International Bond, 5.88%, 05/11/22			3,555		3,808,856
Indonesia — 0.1%
Indonesia Government International Bond, 4.10%, 04/24/28			600		681,750
Italy — 0.4%
Republic of Italy Government International Bond, 5.38%, 06/15/33			2,925		3,687,867
Mexico — 0.0%
Mexico Government International Bond, 4.15%, 03/28/27			260		288,990
Mongolia — 0.0%
Mongolia Government International Bond, 8.75%, 03/09/24			250		279,453
Panama — 0.1%
Panama Government International Bond
3.16%, 01/23/30			212		230,285
4.50%, 04/16/50			200		249,750
					480,035
Paraguay — 0.0%
Paraguay Government International Bond, 5.40%, 03/30/50(a)			200		242,125
Peru — 0.0%
Peruvian Government International Bond, 5.63%, 11/18/50			139		221,748

S C H E D U L E   O F   I N V E S  T M E N T S 19

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Portugal — 0.5%
Portugal Government International Bond, 5.13%, 10/15/24(a)	USD		3,970	$	4,649,400
Qatar — 0.1%
Qatar Government International Bond
4.50%, 04/23/28			435		519,281
4.00%, 03/14/29(a)			240		280,500
4.40%, 04/16/50			200		257,750
					1,057,531
Romania — 0.0%
Romanian Government International Bond, 3.00%, 02/14/31(a)			220		225,775
Russia — 0.1%
Russian Foreign Bond - Eurobond
4.75%, 05/27/26			400		458,000
4.25%, 06/23/27			200		225,000
					683,000
Saudi Arabia — 0.1%
Saudi Government International Bond, 4.50%, 04/17/30			478		571,808
Sri Lanka — 0.1%
Sri Lanka Government International Bond
6.85%, 03/14/24			200		146,625
6.35%, 06/28/24			400		288,625
7.85%, 03/14/29			200		137,813
7.55%, 03/28/30			200		135,000
					708,063
Ukraine — 0.1%
Ukraine Government International Bond
7.75%, 09/01/23			100		101,600
7.75%, 09/01/25			385		385,000
7.25%, 03/15/33(a)			400		367,000
					853,600
Uruguay — 0.0%
Uruguay Government International Bond, 4.98%, 04/20/55			162		215,633
Total Foreign Agency Obligations — 3.5% (Cost: $26,795,507)					30,669,126
Municipal Bonds
California — 0.9%
East Bay Municipal Utility District Water System Revenue, RB, BAB, 5.87%, 06/01/40			1,900		2,932,612
State of California, GO, 7.55%, 04/01/39			280		487,544
State of California, GO, BAB, 7.63%, 03/01/40			1,720		2,984,579
University of California, RB, BAB, 5.95%, 05/15/45			885		1,286,241
					7,690,976
Georgia — 0.3%
Municipal Electric Authority of Georgia, Refunding RB, BAB, 7.06%, 04/01/57			1,970		2,862,114
Illinois — 0.3%
State of Illinois, GO, 5.10%, 06/01/33			2,000		2,007,940

Security		Par (000)		Value
Indiana — 0.4%
Indianapolis Local Public Improvement Bond Bank, RB, Series B-2, 6.12%, 01/15/40	USD		2,535	$	3,702,089
New York — 1.3%
Metropolitan Transportation Authority, RB, BAB, 7.34%, 11/15/39			1,295		2,071,314
New York City Industrial Development Agency, Refunding RB, (AGM), 3.19%, 03/01/40(k)			165		163,170
New York City Water & Sewer System, RB
5.38%, 12/15/20(o)			510		515,345
5.38%, 06/15/43			260		262,665
Series EE, 5.50%, 12/15/20(o)			930		940,090
New York City Water & Sewer System, Refunding RB, BAB, 5.72%, 06/15/42			1,390		2,161,714
New York State Dormitory Authority, RB, BAB
Series D, 5.60%, 03/15/40			1,900		2,695,910
Series F, 5.63%, 03/15/39			1,100		1,482,723
Port Authority of New York & New Jersey, RB, 159th Series, 6.04%, 12/01/29			780		1,036,979
					11,329,910
Total Municipal Bonds — 3.2% (Cost: $20,540,209)					27,593,029
Non-Agency Mortgage-Backed Securities
Collateralized Mortgage Obligations — 0.8%
Alternative Loan Trust
Series 2005-64CB, Class 1A15, 5.50%, 12/25/35			683		667,436
Series 2006-OA21, Class A1, (1 mo. LIBOR US + 0.19%), 0.35%, 03/20/47(b)			595		485,987
Series 2007-OA10, Class 2A1, (1 mo. LIBOR US + 0.25%), 0.40%, 09/25/47(b)			6,124		4,979,891
Banc of America Funding Trust, Series 2007-2, Class 1A2, 6.00%, 03/25/37			366		328,515
GMACM Mortgage Loan Trust, Series 2005-AR3, Class 5A1, 3.51%, 06/19/35(c)			177		169,536
GSR Mortgage Loan Trust
Series 2006-4F, Class 1A1, 5.00%, 05/25/36			13		42,304
Series 2007-4F, Class 3A1, 6.00%, 07/25/37			109		97,205
JP Morgan Mortgage Trust, Series 2006-S3, Class 1A12, 6.50%, 08/25/36			52		31,615
Merrill Lynch Mortgage Investors Trust, Series 2006- A3, Class 3A1, 3.82%, 05/25/36(c)			298		264,494
WaMu Mortgage Pass-Through Certificates, Series 2007-OA4, Class 1A, (12 mo. MTA + 0.77%), 1.79%, 05/25/47(b)			130		116,177
					7,183,160
Commercial Mortgage-Backed Securities — 3.9%
Banc of America Merrill Lynch Commercial Mortgage Securities Trust, Series 2015-200P, Class C, 3.72%, 04/14/33(a)(c)			4,170		4,432,698
CD 2006-CD3 Mortgage Trust, Series 2006-CD3, Class AM, 5.65%, 10/15/48			1,004		1,026,629
Citigroup Commercial Mortgage Trust, Series 2013- GC15, Class B, 5.35%, 09/10/46(c)			7,183		7,676,921
COMM 2015-LC19 Mortgage Trust, Series 2015- LC19, Class C, 4.38%, 02/10/48(c)			3,500		3,560,752

20

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Commercial Mortgage-Backed Securities (continued)
COMM Mortgage Trust, Series 2015-CR22, Class C, 4.24%, 03/10/48(c)	USD		5,000	$	5,071,145
Commercial Mortgage Trust, Series 2013-CR11, Class B, 5.28%, 08/10/50(c)			7,000		7,409,826
CSAIL Commercial Mortgage Trust, Series 2015-C1, Class C, 4.41%, 04/15/50(c)			1,000		917,392
Morgan Stanley Capital I Trust, Series 2014-CPT, Class G, 3.56%, 07/13/29(a)(c)			3,200		3,243,544
					33,338,907
Total Non-Agency Mortgage-Backed Securities — 4.7% (Cost: $39,173,231)					40,522,067
Preferred Securities
Capital Trusts — 7.3%
Banks — 1.1%
Al Ahli Bank of Kuwait KSCP, 7.25%(g)(h)			200		203,375
Bank of East Asia Ltd., 5.88%(g)(h)			500		500,625
Bankia SA, 6.38%(g)(h)	EUR		200		239,534
BBVA Bancomer SA, 5.13%(h)	USD		271		259,990
Burgan Bank SAK, 5.75%(g)(h)			250		247,344
CIT Group, Inc., Series A, 5.80%(g)(h)			163		131,062
HBOS Capital Funding LP, 6.85%(g)			110		111,650
Nanyang Commercial Bank Ltd., 5.00%(g)(h)			200		197,812
Nordea Bank Abp, 6.13%(a)(g)(h)			2,960		3,172,765
TMB Bank PCL, 4.90%(g)(h)			250		237,578
Wells Fargo & Co.(g)(h)
Series S, 5.90%			3,390		3,464,909
Series U, 5.88%			510		549,072
					9,315,716
Capital Markets(g)(h) — 0.4%
Bank of New York Mellon Corp.
Series D, 4.50%			2,000		1,965,000
Series E, 3.65%			2,000		1,960,000
					3,925,000
Consumer Finance — 0.4%
Capital One Financial Corp., Series E, 4.05%(g)(h)			3,500		3,093,755
Diversified Financial Services(g)(h) — 3.8%
Bank of America Corp.
Series AA, 6.10%			409		445,241
Series DD, 6.30%			45		50,855
Series FF, 5.88%			3,500		3,773,887
Series X, 6.25%			4,620		4,936,470
Series Z, 6.50%			87		96,701
BNP Paribas SA(a)
7.20%			2,000		2,169,435
4.50%			200		191,750
Credit Suisse Group AG, 6.38%(a)			300		320,625
HSBC Holdings PLC
6.50%			1,090		1,157,438
6.00%			435		445,875
JPMorgan Chase & Co.
Series FF, 5.00%			527		526,092
Series HH, 4.60%			165		161,700
Series I, 3.74%			3,462		3,319,598

Security		Par (000)		Value
Diversified Financial Services (continued)
JPMorgan Chase & Co. (continued)
Series Q, 5.15%	USD		3,000	$	3,015,000
Series R, 6.00%			70		71,750
Series S, 6.75%			45		48,713
Series U, 6.13%			500		519,309
Series V, 3.55%			6,430		5,949,036
Morgan Stanley, Series H, 3.85%			2,627		2,479,231
Natwest Group PLC
6.00%			1,575		1,602,562
8.63%			200		205,000
Societe Generale SA, 7.88%(a)			1,000		1,058,120
Woori Bank, 4.25%			250		254,687
					32,799,075
Diversified Telecommunication Services — 0.0%
Telefonica Europe BV, 5.88%(g)(h)	EUR		100		128,912
Electric Utilities(h) — 0.4%
Naturgy Finance BV, 3.38%(g)			100		120,031
NextEra Energy Capital Holdings, Inc., 5.65%, 05/01/79	USD		2,750		3,108,657
					3,228,688
Insurance — 1.2%
Achmea BV, 4.63%(g)(h)	EUR		200		232,647
Allstate Corp., Series B, 5.75%, 08/15/53(h)	USD		2,000		2,082,548
Heungkuk Life Insurance Co. Ltd., 4.48%(g)(h)			200		200,000
MetLife, Inc., 6.40%, 12/15/36			2,554		3,177,325
Voya Financial, Inc., 5.65%, 05/15/53(h)			4,500		4,623,750
					10,316,270
Utilities — 0.0%
Electricite de France SA, 4.00%(g)(h)	EUR		100		122,374
Wireless Telecommunication Services — 0.0%
Vodafone Group PLC, 3.10%, 01/03/79(h)			100		119,150
Total Capital Trusts — 7.3%					63,048,940
		Shares
Preferred Stocks — 0.7%(g)
Banks — 0.2%
Wells Fargo & Co., Series Q, 5.85%(h)			75,000		1,954,500
Capital Markets(h) — 0.5%
Goldman Sachs Group, Inc., Series J, 5.50%			92,000		2,438,920
Morgan Stanley, Series K, 5.85%			66,567		1,821,273
					4,260,193
Thrifts & Mortgage Finance — 0.0%
Federal Home Loan Mortgage Corp., Series S, 8.25%(c)			10,000		88,800
Total Preferred Stocks — 0.7%					6,303,493

S C H E D U L E   O F   I N V E S  T M E N T S 21

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Shares			Value
Trust Preferred — 0.1%
Diversified Financial Services — 0.1%
Citigroup Capital XIII, 6.64%, 01/30/40(h)			29,583		$	798,150
Total Preferred Securities — 8.1% (Cost: $69,328,147)						70,150,583
Security		Par (000)
U.S. Government Sponsored Agency Securities
Agency Obligations — 1.6%
Fannie Mae, 5.63%, 07/15/37(i)	USD		1,600			2,571,932
Federal Home Loan Bank(i)
5.25%, 12/09/22			1,375			1,526,225
5.37%, 09/09/24			4,025			4,820,880
Resolution Funding Corp. Principal Strip, 0.00%, 04/15/30(m)			6,055			5,408,389
						14,327,426
Collateralized Mortgage Obligations — 2.4%
Fannie Mae, Series 2015-47, Class GL, 3.50%, 07/25/45			1,636			1,920,125
Fannie Mae Mortgage-Backed Securities
Series 1991-46, Class S, (1 mo. LIBOR US + 2519.00%), 2,485.08%, 05/25/21(b)			—	(p)		—
Series G-33, Class PV, 1,078.42%, 10/25/21			—	(p)		—
Series G-7, Class S, (1 mo. LIBOR US + 1144.57%), 1,124.82%, 03/25/21(b)			—	(p)		1
Series G92-5, Class H, 9.00%, 01/25/22			—	(p)		—
Freddie Mac
Series 1254, Class Z, 8.50%, 04/15/22			3			146
Series 4350, Class DY, 4.00%, 06/15/44			2,830			3,271,976
Series 4398, Class ZX, 4.00%, 09/15/54			9,752			12,202,169
Series 4549, Class TZ, 4.00%, 11/15/45			2,972			3,413,515
Freddie Mac Mortgage-Backed Securities, Series 1057, Class J, 1,008.00%, 03/15/21			—	(p)		—
						20,807,932
Interest Only Collateralized Mortgage Obligations — 0.3%
Fannie Mae Mortgage-Backed Securities
Series 094, Class 2, 9.50%, 08/25/21			—	(p)		1
Series 1991-099, Class L, 930.00%, 08/25/21			—	(p)		—
Series 1991-139, Class PT, 648.35%, 10/25/21			—	(p)		—
Series 1997-50, Class SI, (1 mo. LIBOR US + 9.20%), 1.20%, 04/25/23(b)			12			131
Series 2012-47, Class NI, 4.50%, 04/25/42			2,819			457,905
Series 2012-96, Class DI, 4.00%, 02/25/27			1,516			35,723
Freddie Mac Mortgage-Backed Securities
Series 1043, Class H, (1 mo. LIBOR US + 45.00%), 44.27%, 02/15/21(b)			—	(p)		—
Series 1056, Class KD, 1,084.50%, 03/15/21			—	(p)		—
Ginnie Mae Mortgage-Backed Securities(b)
Series 2009-116, Class KS, (1 mo. LIBOR US + 6.47%), 6.32%, 12/16/39			1,088			189,880

Security		Par (000)			Value
Interest Only Collateralized Mortgage Obligations (continued)
Ginnie Mae Mortgage-Backed Securities(b) (continued)
Series 2009-78, Class SD, (1 mo. LIBOR US + 6.20%), 6.04%, 09/20/32	USD		1,799		$	47,508
Series 2011-52, Class NS, (1 mo. LIBOR US + 6.67%), 6.52%, 04/16/41			9,173			1,955,584
						2,686,732
Mortgage-Backed Securities — 8.4%
Fannie Mae Mortgage-Backed Securities(i)
4.00%, 11/01/47 - 04/01/56			18,345			20,608,891
4.50%, 07/01/55			5,069			5,791,271
Freddie Mac Mortgage-Backed Securities(i)
3.00%, 04/01/33			4,910			5,155,537
4.50%, 03/01/47			1,206			1,352,186
Government National Mortgage Association Mortgage-Backed Securities, 5.50%, 08/15/33			40			44,537
Uniform Mortgage-Backed Securities(i)
5.00%, 08/01/34			1,049			1,204,688
5.50%, 06/01/38			524			608,017
6.00%, 12/01/38			428			504,378
4.50%, 07/01/41 - 04/01/42			6,141			6,897,211
4.00%, 12/01/41 - 12/01/43			3,207			3,564,978
3.00%, 09/01/43			9,670			10,299,741
3.50%, 07/01/49 - 08/01/49			15,468			16,700,884
						72,732,319
Principal Only Collateralized Mortgage Obligations(m) — 0.0%
Fannie Mae Mortgage-Backed Securities
Series 1993-51, Class E, 0.00%, 02/25/23			2			1,740
Series 1993-70, Class A, 0.00%, 05/25/23			—	(p)		345
Series 203, Class 1, 0.00%, 02/25/23			1			524
Series 228, Class 1, 0.00%, 06/25/23			—	(p)		300
						2,909
Total U.S. Government Sponsored Agency Securities — 12.7% (Cost: $98,195,922)						110,557,318
U.S. Treasury Obligations
U.S. Treasury Bonds(i)
3.00%, 11/15/44			61,400			82,206,445
2.50%, 02/15/46			66,500			82,296,347
2.75%, 11/15/47			2,000			2,605,547
U.S. Treasury Note/Bond, 0.13%, 08/31/22			21,300			21,299,168
U.S. Treasury Notes
2.75%, 09/15/21 - 08/31/25(i)			22,100			24,274,996
7.50%, 11/15/24(i)			8,200			10,663,203
3.00%, 09/30/25(i)			2,400			2,724,000
2.88%, 08/15/28(i)			1,000			1,180,977
3.13%, 11/15/28(i)			3,000			3,615,469
0.63%, 08/15/30			7,000			6,965,000
Total U.S. Treasury Obligations — 27.4% (Cost: $197,788,658)						237,831,152

22

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security	Shares		Value
Warrants
Oil, Gas & Consumable Fuels — 0.0%
SM Energy Co. (Expires 06/30/23)(f)		7,761	$	12,262
Total Warrants — 0.0% (Cost: $33,290)				12,262
Total Long-Term Investments — 131.4% (Cost: $1,026,786,022)				1,142,005,814
Short-Term Securities
Money Market Funds — 3.1%
BlackRock Liquidity Funds, T-Fund, Institutional Class, 0.02%(q)(r)		27,250,039		27,250,039
Total Short-Term Securities — 3.1% (Cost: $27,250,039)				27,250,039
Options Purchased — 0.9% (Cost: $7,070,870)				7,260,485
Total Investments Before Options Written — 135.4% (Cost: $1,061,106,931)				1,176,516,338
Options Written — (1.2)% (Premiums Received: $(11,650,495))				(10,206,239	)
Total Investments, Net of Options Written — 134.2% (Cost: $1,049,456,436)				1,166,310,099
Liabilities in Excess of Other Assets — (34.2)%				(297,085,504	)
Net Assets — 100.0%			$	869,224,595

^(a)  Security exempt from registration pursuant to Rule 144A under the Securities Act of 1933, as amended. These securities may be resold in transactions exempt from registration to qualified institutional investors.

^(b)  Variable rate security. Rate shown is the rate in effect as of period end.

^(c)  Variable or floating rate security, which interest rate adjusts periodically based on changes in current interest rates and prepayments on the underlying pool of assets. Rate shown is the rate in effect as of period end.

^(d)  Security is valued using significant unobservable inputs and is classified as Level 3 in the fair value hierarchy.

^(e)  Issuer filed for bankruptcy and/or is in default.

^(f)  Non-income producing security.

^(g)  Perpetual security with no stated maturity date.

^(h)  Variable rate security. Security may be issued at a fixed coupon rate, which converts to a variable rate at a specified date. Rate shown is the rate in effect as of period end.

⁽ⁱ⁾  All or a portion of the security has been pledged as collateral in connection with outstanding reverse repurchase agreements.

^(j)  Payment-in-kind security which may pay interest/dividends in additional par/shares and/or in cash. Rates shown are the current rate and possible payment rates.

^(k)  When-issued security.

^(l)  Convertible security.

^(m)  Zero-coupon bond.

⁽ⁿ⁾  Represents an unsettled loan commitment at period end. Certain details associated with this purchase are not known prior to the settlement date, including coupon rate.

^(o)  U.S. Government securities held in escrow, are used to pay interest on this security as well as to retire the bond in full at the date indicated, typically at a premium to par.

^(p)  Amount is less than 500.

^(q)  Affiliate of the Trust.

^(r)  Annualized 7-day yield as of period end.

Affiliates

Investments in issuers considered to be affiliate(s) of the Trust during the period ended September 30, 2020, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

Affiliated Issuer	Value at 12/31/19		Purchases at Cost			Proceeds from Sales		Net Realized Gain (Loss)		Change in Unrealized Appreciation (Depreciation)		Value at 09/30/20		Shares Held at 09/30/20		Income		Capital Gain Distributions from Underlying Funds
BlackRock Liquidity Funds, T-Fund, Institutional Class	$	13,516,974	$	13,733,065	(a)	$	—	$	—	$	—	$	27,250,039		27,250,039	$	104,490	$	—

^(a) Represents net amount purchased (sold).

For Trust compliance purposes, the Trust’s industry classifications refer to one or more of the industry sub-classifications used by one or more widely recognized market indexes or rating group indexes, and/or as defined by the investment adviser. These definitions may not apply for purposes of this report, which may combine such industry sub-classifications for reporting ease.

Reverse Repurchase Agreements

Counterparty

Interest Rate

Trade Date

Maturity Date

(a)

Face Value

Face Value Including Accrued Interest

Type of Non-Cash Underlying Collateral

Remaining Contractual Maturity of the Agreements

(a)

BNP Paribas S.A.

0.16

%(b)

05/30/19

Open

$

2,547,469

$

2,597,737

U.S. Government Sponsored     Agency Securities

Up to 30 Days

BNP Paribas S.A.

0.16

(b)

05/30/19

Open

2,250,000

2,294,399

U.S. Government Sponsored     Agency Securities

Up to 30 Days

BNP Paribas S.A.

0.16

(b)

05/30/19

Open

1,555,469

1,586,163

U.S. Government Sponsored     Agency Securities

Up to 30 Days

BNP Paribas S.A.

0.14

(b)

01/02/20

Open

68,921,500

69,250,734

U.S. Treasury Obligations

Open/Demand

BNP Paribas S.A.

0.14

(b)

01/02/20

Open

25,875,000

25,998,604

U.S. Treasury Obligations

Open/Demand

BNP Paribas S.A.

0.14

(b)

01/02/20

Open

2,912,000

2,924,149

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.77

(b)

08/20/20

Open

2,650,000

2,650,363

U.S. Treasury Obligations

Open/Demand

S C H E D U L E   O F   I N V E S  T M E N T S 23

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

Reverse Repurchase Agreements (continued)

Counterparty

Interest Rate

Trade Date

Maturity Date

(a)

Face Value

Face Value Including Accrued Interest

Type of Non-Cash Underlying Collateral

Remaining Contractual Maturity of the Agreements

(a)

Nomura Securities International, Inc.

0.14

%(b)

08/20/20

Open

$

2,912,000

$

2,912,399

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.14

(b)

08/20/20

Open

1,855,125

1,855,379

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.14

(b)

08/20/20

Open

16,455,173

16,457,426

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.14

(b)

08/20/20

Open

10,875,250

10,876,739

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.14

(b)

08/20/20

Open

1,183,750

1,183,912

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.14

(b)

08/20/20

Open

3,648,750

3,649,250

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.14

(b)

08/20/20

Open

50,930,269

50,937,243

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.14

(b)

08/20/20

Open

2,757,000

2,757,378

U.S. Treasury Obligations

Open/Demand

RBC Capital Markets LLC

0.45

(b)

09/01/20

Open

3,187,500

3,188,695

Corporate Bonds

Open/Demand

Bofa Securities, Inc.

1.25

(b)

09/02/20

Open

69,795

69,725

Corporate Bonds

Open/Demand

BNP Paribas S.A.

0.18

(b)

09/11/20

10/14/20

3,853,546

3,853,874

U.S. Government Sponsored     Agency Securities

Up to 30 Days

BNP Paribas S.A.

0.18

(b)

09/11/20

10/14/20

1,822,847

1,823,002

U.S. Government Sponsored     Agency Securities

Up to 30 Days

BNP Paribas S.A.

0.18

(b)

09/11/20

10/14/20

5,537,673

5,538,144

U.S. Government Sponsored     Agency Securities

Up to 30 Days

Nomura Securities International, Inc.

0.19

(b)

09/11/20

10/14/20

9,308,232

9,309,067

U.S. Government Sponsored     Agency Securities

Up to 30 Days

Nomura Securities International, Inc.

0.19

(b)

09/11/20

10/14/20

10,032,762

10,033,662

U.S. Government Sponsored     Agency Securities

Up to 30 Days

Nomura Securities International, Inc.

0.19

(b)

09/11/20

10/14/20

14,228,787

14,230,063

U.S. Government Sponsored     Agency Securities

Up to 30 Days

Nomura Securities International, Inc.

0.19

(b)

09/11/20

10/14/20

6,858,680

6,859,295

U.S. Government Sponsored     Agency Securities

Up to 30 Days

Royal Bank of Canada

0.19

(b)

09/11/20

10/14/20

5,007,355

5,007,805

U.S. Government Sponsored     Agency Securities

Up to 30 Days

Royal Bank of Canada

0.19

(b)

09/11/20

10/14/20

490,634

490,678

U.S. Government Sponsored     Agency Securities

Up to 30 Days

Royal Bank of Canada

0.19

(b)

09/11/20

10/14/20

1,657,293

1,657,442

U.S. Government Sponsored     Agency Securities

Up to 30 Days

Royal Bank of Canada

0.19

(b)

09/11/20

10/14/20

1,813,337

1,813,500

U.S. Government Sponsored     Agency Securities

Up to 30 Days

Royal Bank of Canada

0.19

(b)

09/11/20

10/14/20

1,173,162

1,173,267

U.S. Government Sponsored     Agency Securities

Up to 30 Days

Royal Bank of Canada

0.19

(b)

09/11/20

10/14/20

1,309,548

1,309,666

U.S. Government Sponsored     Agency Securities

Up to 30 Days

Royal Bank of Canada

0.19

(b)

09/11/20

10/14/20

5,009,295

5,009,744

U.S. Government Sponsored     Agency Securities

Up to 30 Days

Royal Bank of Canada

0.19

(b)

09/11/20

10/14/20

591,550

591,603

U.S. Government Sponsored     Agency Securities

Up to 30 Days

Royal Bank of Canada

0.19

(b)

09/11/20

10/14/20

1,669,628

1,669,777

U.S. Government Sponsored     Agency Securities

Up to 30 Days

RBC Capital Markets LLC

0.45

(b)

09/11/20

Open

639,375

639,535

Corporate Bonds

Open/Demand

RBC Capital Markets LLC

0.45

(b)

09/11/20

Open

3,951,406

3,952,394

Corporate Bonds

Open/Demand

RBC Capital Markets LLC

0.45

(b)

09/11/20

Open

2,367,575

2,368,167

Corporate Bonds

Open/Demand

RBC Capital Markets LLC

0.45

(b)

09/11/20

Open

2,210,000

2,210,553

Corporate Bonds

Open/Demand

RBC Capital Markets LLC

0.40

(b)

09/21/20

Open

5,474,000

5,474,608

Corporate Bonds

Open/Demand

RBC Capital Markets LLC

0.40

(b)

09/21/20

Open

7,516,875

7,517,710

Corporate Bonds

Open/Demand

$

293,109,610

$

293,723,851

^(a)  Certain agreements have no stated maturity and can be terminated by either party at any time.

^(b)  Variable rate security. Rate as of period end and maturity is the date the principal owed can be recovered through demand.

24

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

Derivative Financial Instruments Outstanding as of Period End

Futures Contracts

Description	Number of Contracts		Expiration Date		Notional Amount (000)		Value/ Unrealized Appreciation (Depreciation)
Long Contracts
Short Term Euro BTP		558		12/08/20	$	74,104	$	204,946
90-Day Euro-Dollar		605		12/14/20		150,879		91,415
10-Year U.S. Ultra Note		154		12/21/20		24,628		59,066
U.S. Ultra Treasury Bond		157		12/21/20		34,825		(122,305	)
5-Year U.S. Treasury Note		149		12/31/20		18,779		13,336
								246,458
Short Contracts
Euro-Schatz Futures		641		12/08/20		84,390		(26,867	)
10-Year U.S. Treasury Note		671		12/21/20		93,625		(313,255	)
Long U.S. Treasury Bond		33		12/21/20		5,817		(8,359	)
2-Year U.S. Treasury Note		639		12/31/20		141,194		(88,443	)
90-Day Euro-Dollar		605		12/19/22		150,849		(149,022	)
								(585,946	)
							$	(339,488	)

Forward Foreign Currency Exchange Contracts

Currency Purchased		Currency Sold			Counterparty	Settlement Date		Unrealized Appreciation (Depreciation)
EUR	3,049,500		USD	3,570,964	UBS AG		10/05/20	$	4,643
GBP	396,000		USD	509,249	BNP Paribas S.A.		10/05/20		1,736
GBP	4,121,000		USD	5,295,073	HSBC Bank PLC		10/05/20		22,527
USD	118,473		EUR	100,000	State Street Bank and Trust Co.		10/05/20		1,220
USD	226,888		EUR	191,000	State Street Bank and Trust Co.		10/05/20		2,936
USD	6,954,488		EUR	5,816,000	UBS AG		10/05/20		135,096
USD	5,486,209		GBP	4,121,000	Bank of America N.A.		10/05/20		168,609
USD	529,746		GBP	398,000	Citibank N.A.		10/05/20		16,180
USD	133,071		NZD	198,000	Bank of America N.A.		10/05/20		2,084
USD	3,582,324		EUR	3,049,500	BNP Paribas S.A.		11/04/20		4,503
EUR	5,510,000		NOK	60,127,056	Goldman Sachs International		12/16/20		23,636
EUR	5,610,000		USD	6,576,480	Natwest Markets PLC		12/16/20		12,050
NZD	9,756,941		AUD	8,960,000	Barclays Bank PLC		12/16/20		35,401
USD	6,506,032		EUR	5,520,000	JPMorgan Chase Bank N.A.		12/16/20		23,201
									453,822
EUR	3,049,500		USD	3,580,099	BNP Paribas S.A.		10/05/20		(4,491	)
USD	7,731		JPY	819,000	JPMorgan Chase Bank N.A.		10/05/20		(35	)
USD	3,573,175		EUR	3,049,500	UBS AG		11/04/20		(4,646	)
USD	509,330		GBP	396,000	BNP Paribas S.A.		11/04/20		(1,736	)
USD	5,295,909		GBP	4,121,000	HSBC Bank PLC		11/04/20		(22,532	)
AUD	8,960,000		NZD	9,754,200	JPMorgan Chase Bank N.A.		12/16/20		(33,588	)
EUR	5,520,000		USD	6,523,873	Bank of America N.A.		12/16/20		(41,042	)
NOK	58,916,982		EUR	5,510,000	JPMorgan Chase Bank N.A.		12/16/20		(153,393	)
USD	6,541,114		EUR	5,610,000	Bank of America N.A.		12/16/20		(47,415	)
									(308,878	)
								$	144,944

S C H E D U L E   O F   I N V E S  T M E N T S 25

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

Interest Rate Caps — Purchased

Description	Exercise Rate			Counterparty	Expiration Date		Notional Amount (000)			Value		Premiums Paid (Received)		Unrealized Appreciation (Depreciation)
Call
5Y-30Y CMS Index Cap		0.30	%	Citibank N.A.		02/14/22		USD	77,750	$	388,761	$	136,820	$	251,941
5Y-30Y CMS Index Cap		0.30		Citibank N.A.		02/14/22		USD	31,100		155,504		120,357		35,147
										$	544,265	$	257,177	$	287,088

Exchange-Traded Options Purchased

Description	Number of Contracts		Expiration Date		Exercise Price			Notional Amount (000)			Value
Call
90-Day Euro Future		684		12/13/21		USD	99.75		USD	170,573	$	171,000
Put
10-Year U.S. Treasury Note		232		11/20/20		USD	139.50		USD	32,364		166,750
10-Year U.S. Treasury Note		232		11/20/20		USD	138.00		USD	32,016		68,875
												235,625
											$	406,625

OTC Credit Default Swaptions Purchased

Paid by the Trust

Received by the Trust

Counterparty

Expiration Date

Exercise Price

Notional Amount (000)

Value

Description

Rate

Frequency

Rate

Frequency

Call

10-Year Interest Rate Swap, 06/29/38

3.05

%

Semi-Annual

3-Month LIBOR

Quarterly

Deutsche Bank AG

06/27/28

USD

3.05

USD

3,125

$

313,904

26

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

OTC Interest Rate Swaptions Purchased

Paid by the Trust

Received by the Trust

Counterparty

Expiration Date

Exercise Rate

Notional Amount (000)

Value

Description

Rate

Frequency

Rate

Frequency

Call

20-Year Interest Rate Swap, 04/18/41

6-Month JPY LIBOR, (0.05%)

Semi-Annual

0.78%

Semi-Annual

JPMorgan Chase Bank N.A.

04/16/21

0.78

%

JPY

105,700

$

103,915

1-Year Interest Rate Swap, 05/22/24

3-Month LIBOR, 0.23%

Quarterly

0.39%

Semi-Annual

Bank of America N.A.

05/22/23

0.39

USD

13,770

32,124

10-Year Interest Rate Swap, 03/09/34

3-Month LIBOR, 0.23%

Quarterly

2.98%

Semi-Annual

Barclays Bank PLC

03/07/24

2.98

USD

3,510

652,890

10-Year Interest Rate Swap, 03/14/34

3-Month LIBOR, 0.23%

Quarterly

2.95%

Semi-Annual

Barclays Bank PLC

03/12/24

2.95

USD

3,510

643,622

1-Year Interest Rate Swap, 11/07/25

3-Month LIBOR, 0.23%

Quarterly

1.77%

Semi-Annual

JPMorgan Chase Bank N.A.

11/05/24

1.77

USD

23,790

293,826

10-Year Interest Rate Swap, 02/27/35

3-Month LIBOR, 0.23%

Quarterly

1.49%

Semi-Annual

Citibank N.A.

02/25/25

1.49

USD

2,570

172,012

10-Year Interest Rate Swap, 05/02/35

3-Month LIBOR, 0.23%

Quarterly

0.89%

Semi-Annual

Deutsche Bank AG

04/30/25

0.89

USD

1,640

61,888

10-Year Interest Rate Swap, 06/06/35

3-Month LIBOR, 0.23%

Quarterly

1.28%

Semi-Annual

Goldman Sachs Bank USA

06/04/25

1.28

USD

1,120

62,211

10-Year Interest Rate Swap, 06/07/35

3-Month LIBOR, 0.23%

Quarterly

1.43%

Semi-Annual

UBS AG

06/05/25

1.43

USD

1,120

70,941

10-Year Interest Rate Swap, 08/09/35

3-Month LIBOR, 0.23%

Quarterly

0.91%

Semi-Annual

Morgan Stanley & Co. International PLC

08/07/25

0.91

USD

1,930

75,405

10-Year Interest Rate Swap, 08/09/35

3-Month LIBOR, 0.23%

Quarterly

0.91%

Semi-Annual

Morgan Stanley & Co. International PLC

08/07/25

0.91

USD

620

24,223

10-Year Interest Rate Swap, 01/02/39

3-Month LIBOR, 0.23%

Quarterly

3.04%

Semi-Annual

Nomura International Plc

01/10/29

3.04

USD

1,000

169,747

10-Year Interest Rate Swap, 01/13/39

3-Month LIBOR, 0.23%

Quarterly

3.04%

Semi-Annual

Morgan Stanley & Co. International PLC

01/11/29

3.04

USD

1,000

169,544

10-Year Interest Rate Swap, 01/31/39

3-Month LIBOR, 0.23%

Quarterly

3.08%

Semi-Annual

Barclays Bank PLC

01/29/29

3.08

USD

1,020

176,468

10-Year Interest Rate Swap, 08/09/40

3-Month LIBOR, 0.23%

Quarterly

1.05%

Semi-Annual

Morgan Stanley & Co. International PLC

08/07/30

1.05

USD

1,210

65,650

10-Year Interest Rate Swap, 04/29/48

3-Month LIBOR, 0.23%

Quarterly

2.99%

Semi-Annual

JPMorgan Chase Bank N.A.

04/27/38

2.99

USD

910

152,605

10-Year Interest Rate Swap, 03/02/39

3-Month LIBOR, 0.23%

Quarterly

2.86%

Semi-Annual

JPMorgan Chase Bank N.A.

02/22/39

2.86

USD

933

149,203

10-Year Interest Rate Swap, 08/09/50

3-Month LIBOR, 0.23%

Quarterly

0.91%

Semi-Annual

Morgan Stanley & Co. International PLC

08/07/40

0.91

USD

730

47,284

3,123,558

S C H E D U L E   O F   I N V E S  T M E N T S 27

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

OTC Interest Rate Swaptions Purchased (continued)

Paid by the Trust

Received by the Trust

Expiration

Exercise

Notional

Description

Rate

Frequency

Rate

Frequency

Counterparty

Date

Rate

Amount (000)

Value

Put

20-Year Interest Rate Swap, 04/18/41

0.78%

Semi-Annual

6-Month JPY LIBOR, (0.05%)

Semi-Annual

JPMorgan Chase Bank N.A.

04/16/21

0.78

%

JPY

105,700

$

435

30-Year Interest Rate Swap, 06/09/51

3.80%

Quarterly

3-Month LIBOR, 0.23%

Semi-Annual

Barclays Bank PLC

06/07/21

3.80

USD

3,780

1,993

10-Year Interest Rate Swap, 08/29/31

1.20%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Deutsche Bank AG

08/27/21

1.20

USD

182,200

1,794,309

10-Year Interest Rate Swap, 01/13/32

1.25%

Semi-Annual

6-Month JPY LIBOR, (0.05%)

Semi-Annual

Credit Suisse International

01/11/22

1.25

JPY

250,000

38

10-Year Interest Rate Swap, 02/24/32

1.55%

Semi-Annual

6-Month JPY LIBOR, (0.05%)

Semi-Annual

Credit Suisse International

02/22/22

1.55

JPY

250,000

22

10-Year Interest Rate Swap, 03/18/32

1.60%

Semi-Annual

6-Month JPY LIBOR, (0.05%)

Semi-Annual

JPMorgan Chase Bank N.A.

03/16/22

1.60

JPY

250,000

23

10-Year Interest Rate Swap, 04/06/32

1.45%

Semi-Annual

6-Month JPY LIBOR, (0.05%)

Semi-Annual

JPMorgan Chase Bank N.A.

04/04/22

1.45

JPY

250,000

42

15-Year Interest Rate Swap, 05/05/37

3.25%

Quarterly

3-Month LIBOR, 0.23%

Semi-Annual

Goldman Sachs Bank USA

05/03/22

3.25

USD

4,050

6,839

30-Year Interest Rate Swap, 05/11/52

2.85%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Nomura International Plc

05/09/22

2.85

USD

4,750

36,032

10-Year Interest Rate Swap, 08/04/32

2.25%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

JPMorgan Chase Bank N.A.

08/02/22

2.25

USD

4,160

17,339

10-Year Interest Rate Swap, 08/10/32

2.25%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Barclays Bank PLC

08/08/22

2.25

USD

4,270

18,050

10-Year Interest Rate Swap, 03/09/34

2.98%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Barclays Bank PLC

03/07/24

2.98

USD

3,510

18,997

10-Year Interest Rate Swap, 03/14/34

2.95%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Barclays Bank PLC

03/12/24

2.95

USD

3,510

19,715

10-Year Interest Rate Swap, 06/15/34

2.50%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Morgan Stanley & Co. International PLC

06/13/24

2.50

USD

3,950

41,769

10-Year Interest Rate Swap, 06/22/26

2.50%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Morgan Stanley & Co. International PLC

06/20/24

2.50

USD

3,950

42,126

1-Year Interest Rate Swap, 11/07/25

1.77%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

JPMorgan Chase Bank N.A.

11/05/24

1.77

USD

23,790

21,612

10-Year Interest Rate Swap, 02/27/35

1.49%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Citibank N.A.

02/25/25

1.49

USD

2,570

98,253

10-Year Interest Rate Swap, 05/02/35

0.89%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Deutsche Bank AG

04/30/25

0.89

USD

1,640

110,912

10-Year Interest Rate Swap, 06/06/35

1.28%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Goldman Sachs Bank USA

06/04/25

1.28

USD

1,120

54,769

10-Year Interest Rate Swap, 06/07/35

1.43%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

UBS AG

06/05/25

1.43

USD

1,120

48,002

10-Year Interest Rate Swap, 08/09/35

0.91%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Morgan Stanley & Co. International PLC

08/07/25

0.91

USD

620

42,670

10-Year Interest Rate Swap, 08/09/35

0.91%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Morgan Stanley & Co. International PLC

08/07/25

0.91

USD

1,930

132,827

10-Year Interest Rate Swap, 04/14/37

3.00%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

JPMorgan Chase Bank N.A.

04/12/27

3.00

USD

2,590

39,498

10-Year Interest Rate Swap, 01/12/39

3.04%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Nomura International Plc

01/10/29

3.04

USD

1,000

19,551

10-Year Interest Rate Swap, 01/13/39

3.04%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Morgan Stanley & Co. International PLC

01/11/29

3.04

USD

1,000

19,620

10-Year Interest Rate Swap, 01/31/39

3.08%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Barclays Bank PLC

01/29/29

3.08

USD

1,020

19,442

10-Year Interest Rate Swap, 08/09/40

1.05%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Morgan Stanley & Co. International PLC

08/07/30

1.05

USD

1,210

105,133

20-Year Interest Rate Swap, 08/11/53

4.00%

Annual

6-Month EURIBOR, (0.48%)

Annual

Barclays Bank PLC

08/09/33

4.00

EUR

2,410

31,838

28

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

OTC Interest Rate Swaptions Purchased (continued)

Paid by the Trust

Received by the Trust

Expiration

Exercise

Notional

Description

Rate

Frequency

Rate

Frequency

Counterparty

Date

Rate

Amount (000)

Value

Put (continued)

10-Year Interest Rate Swap, 04/29/48

2.99%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

JPMorgan Chase Bank N.A.

04/27/38

2.99

%

USD

910

$

29,790

10-Year Interest Rate Swap, 02/24/49

2.86%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

JPMorgan Chase Bank N.A.

02/22/39

2.86

USD

933

32,827

10-Year Interest Rate Swap, 08/09/50

0.91%

Semi-Annual

3-Month LIBOR, 0.23%

Semi-Annual

Morgan Stanley & Co. International PLC

08/07/40

0.91

USD

730

67,660

2,872,133

$

5,995,691

Interest Rate Caps Sold

Description	Excercise Rate			Counterparty	Expiration Date		Notional Amount (000)			Value			Premiums Paid (Received)			Unrealized Appreciation (Depreciation)
Call
5Y-30Y CMS Index Cap		0.55	%	Citibank N.A.		02/14/22		USD	38,875	$	(122,290	)	$	(33,044	)	$	(89,246	)
5Y-30Y CMS Index Cap		0.55		Citibank N.A.		02/14/22		USD	38,875		(122,290	)		(40,041	)		(82,249	)
5Y-30Y CMS Index Cap		0.55		Citibank N.A.		02/14/22		USD	31,100		(97,832	)		(72,152	)		(25,680	)
										$	(342,412	)	$	(145,237	)	$	(197,175	)

Exchange-Traded Options Written

Description	Number of Contracts		Expiration Date		Exercise Price			Notional Amount (000)			Value
Call
90-Day Euro Future		342		12/13/21		USD	99.38		USD	84,965	$	(369,787	)
90-Day Euro Future		171		12/13/21		USD	100.00		USD	42,750		(14,963	)
												(384,750	)
Put
10-Year U.S. Treasury Note		232		11/20/20		USD	138.50		USD	32,132		(94,250	)
10-Year U.S. Treasury Note		232		11/20/20		USD	139.00		USD	32,248		(123,250	)
												(217,500	)
											$	(602,250	)

OTC Interest Rate Swaptions Written

Paid by the Trust

Received by the Trust

Expiration

Exercise

Notional

Description

Rate

Frequency

Rate

Frequency

Counterparty

Date

Rate

Amount (000)

Value

Call

1-Year Interest Rate Swap, 11/07/21

1.58%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

JPMorgan Chase Bank N.A.

11/05/20

1.58

%

USD

23,790

$

(326,023)

5-Year Interest Rate Swap, 11/11/25

0.15%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Bank of America N.A.

11/09/20

0.15

USD

1,370

(84)

5-Year Interest Rate Swap, 11/11/25

0.15%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Bank of America N.A.

11/09/20

0.15

USD

2,220

(136)

2-Year Interest Rate Swap, 12/13/22

1.54%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Goldman Sachs Bank USA

12/11/20

1.53

USD

12,580

(333,353)

2-Year Interest Rate Swap, 12/16/22

1.53%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Citibank N.A.

12/14/20

1.53

USD

12,580

(332,095)

10-Year Interest Rate Swap, 03/10/31

2.79%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Barclays Bank PLC

03/08/21

2.79

USD

5,266

(1,051,883)

1-Year Interest Rate Swap, 03/19/22

0.41%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Morgan Stanley & Co. International PLC

03/17/21

0.41

USD

23,790

(52,492)

10-Year Interest Rate Swap, 04/08/31

0.69%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Barclays Bank PLC

04/06/21

0.69

USD

1,210

(16,919)

10-Year Interest Rate Swap, 04/08/31

0.69%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Deutsche Bank AG

04/06/21

0.69

USD

1,210

(16,686)

S C H E D U L E   O F   I N V E S  T M E N T S 29

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

OTC Interest Rate Swaptions Written (continued)

Paid by the Trust

Received by the Trust

Expiration

Exercise

Notional

Description

Rate

Frequency

Rate

Frequency

Counterparty

Date

Rate

Amount (000)

Value

Call (continued)

10-Year Interest Rate Swap, 04/08/31

0.71%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Barclays Bank PLC

04/06/21

0.71

%

USD

2,420

$

(35,966)

10-Year Interest Rate Swap, 04/08/31

0.73%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Morgan Stanley & Co. International PLC

04/06/21

0.73

USD

1,440

(22,557)

10-Year Interest Rate Swap, 04/09/31

0.85%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Morgan Stanley & Co. International PLC

04/07/21

0.85

USD

965

(21,271)

10-Year Interest Rate Swap, 04/11/31

0.87%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Morgan Stanley & Co. International PLC

04/09/21

0.87

USD

2,430

(56,484)

10-Year Interest Rate Swap, 04/16/31

0.88%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Barclays Bank PLC

04/14/21

0.88

USD

1,220

(29,094)

10-Year Interest Rate Swap, 04/17/31

0.77%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Bank of America N.A.

04/15/21

0.76

USD

1,155

(20,326)

10-Year Interest Rate Swap, 04/17/31

0.79%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Citibank N.A.

04/15/21

0.79

USD

1,360

(25,678)

10-Year Interest Rate Swap, 04/18/31

0.72%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Bank of America N.A.

04/16/21

0.72

USD

1,155

(17,750)

10-Year Interest Rate Swap, 04/21/31

0.74%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Morgan Stanley & Co. International PLC

04/19/21

0.74

USD

3,820

(63,624)

10-Year Interest Rate Swap, 05/13/31

0.69%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Goldman Sachs Bank USA

05/13/21

0.69

USD

2,470

(36,421)

10-Year Interest Rate Swap, 06/04/31

0.75%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Deutsche Bank AG

06/02/21

0.75

USD

4,800

(86,513)

10-Year Interest Rate Swap, 06/27/31

0.74%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Bank of America N.A.

06/25/21

0.74

USD

2,450

(45,002)

10-Year Interest Rate Swap, 07/01/31

0.72%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

BNP Paribas S.A.

06/29/21

0.72

USD

2,450

(42,291)

10-Year Interest Rate Swap, 07/16/31

0.67%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Bank of America N.A.

07/14/21

0.67

USD

2,490

(38,647)

10-Year Interest Rate Swap, 08/07/31

0.75%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Bank of America N.A.

08/05/21

0.75

USD

1,195

(23,407)

10-Year Interest Rate Swap, 08/11/31

0.63%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Deutsche Bank AG

08/09/21

0.63

USD

14,190

(210,999)

10-Year Interest Rate Swap, 08/29/31

0.60%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Deutsche Bank AG

08/27/21

0.60

USD

182,200

(2,550,151)

10-Year Interest Rate Swap, 10/02/31

0.45%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Bank of America N.A.

09/30/21

0.45

USD

3,280

(33,334)

5-Year Interest Rate Swap, 04/06/27

(0.12%)

Semi-Annual

6-Month EURIBOR, (0.48%)

Semi-Annual

Barclays Bank PLC

04/04/22

(0.12)

EUR

5,250

(100,474)

5-Year Interest Rate Swap, 04/09/27

(0.02%)

Semi-Annual

6-Month EURIBOR, (0.48%)

Semi-Annual

Barclays Bank PLC

04/07/22

(0.02)

EUR

6,030

(142,358)

10-Year Interest Rate Swap, 05/04/32

0.74%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Deutsche Bank AG

05/02/22

0.74

USD

2,540

(59,829)

5-Year Interest Rate Swap, 06/17/27

0.61%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Morgan Stanley & Co. International PLC

06/15/22

0.61

USD

6,790

(88,374)

10-Year Interest Rate Swap, 08/10/32

0.72%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Deutsche Bank AG

08/08/22

0.72

USD

970

(23,041)

5-Year Interest Rate Swap, 08/10/27

(0.02%)

Semi-Annual

6-Month EURIBOR, (0.48%)

Semi-Annual

Barclays Bank PLC

08/08/22

(0.02)

EUR

6,690

(159,524)

5-Year Interest Rate Swap, 09/14/27

(0.14%)

Semi-Annual

6-Month EURIBOR, (0.48%)

Semi-Annual

Barclays Bank PLC

09/12/22

(0.14)

EUR

2,720

(51,184)

5-Year Interest Rate Swap, 09/15/27

(0.04%)

Semi-Annual

6-Month EURIBOR, (0.48%)

Semi-Annual

Barclays Bank PLC

09/13/22

(0.04)

EUR

2,720

(63,216)

1-Year Interest Rate Swap, 04/08/24

0.61%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Bank of America N.A.

04/06/23

0.61

USD

8,740

(31,365)

30

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

OTC Interest Rate Swaptions Written (continued)

Paid by the Trust

Received by the Trust

Expiration

Exercise

Notional

Description

Rate

Frequency

Rate

Frequency

Counterparty

Date

Rate

Amount (000)

Value

Call (continued)

1-Year Interest Rate Swap, 04/11/24

0.69%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Deutsche Bank AG

04/11/23

0.69

%

USD

13,770

$

(57,547)

10-Year Interest Rate Swap, 03/14/39

3.05%

Quarterly

3-Month LIBOR, 0.23%

Quarterly

Barclays Bank PLC

03/12/29

3.05

USD

2,840

(483,688)

(6,749,786)

Put

2-Year Interest Rate Swap, 10/04/22

3-Month LIBOR, 0.23%

Quarterly

1.05%

Semi-Annual

Goldman Sachs Bank USA

10/02/20

1.05

USD

12,050

—

2-Year Interest Rate Swap, 10/04/22

3-Month LIBOR, 0.23%

Quarterly

1.05%

Semi-Annual

Goldman Sachs Bank USA

10/02/20

1.05

USD

12,050

—

2-Year Interest Rate Swap, 10/07/20

3-Month LIBOR, 0.23%

Quarterly

1.00%

Semi-Annual

Deutsche Bank AG

10/05/20

1.00

USD

12,050

—

2-Year Interest Rate Swap, 10/07/22

3-Month LIBOR, 0.23%

Quarterly

1.00%

Semi-Annual

Deutsche Bank AG

10/05/20

1.00

USD

11,215

—

2-Year Interest Rate Swap, 10/15/22

3-Month LIBOR, 0.23%

Quarterly

0.70%

Semi-Annual

Deutsche Bank AG

10/13/20

0.70

USD

9,825

—

2-Year Interest Rate Swap, 10/15/22

3-Month LIBOR, 0.23%

Quarterly

0.70%

Semi-Annual

Deutsche Bank AG

10/13/20

0.70

USD

14,160

—

2-Year Interest Rate Swap, 10/15/22

3-Month LIBOR, 0.23%

Quarterly

0.70%

Semi-Annual

Deutsche Bank AG

10/13/20

0.70

USD

9,425

—

2-Year Interest Rate Swap, 10/15/22

3-Month LIBOR, 0.23%

Quarterly

0.75%

Semi-Annual

Deutsche Bank AG

10/13/20

0.75

USD

12,770

—

2-Year Interest Rate Swap, 10/16/22

3-Month LIBOR, 0.23%

Quarterly

0.65%

Semi-Annual

Barclays Bank PLC

10/14/20

0.65

USD

11,365

—

10-Year Interest Rate Swap, 11/04/30

3-Month LIBOR, 0.23%

Quarterly

1.63%

Semi-Annual

Bank of America N.A.

11/02/20

1.62

USD

2,680

(3)

10-Year Interest Rate Swap, 11/04/30

3-Month LIBOR, 0.23%

Quarterly

1.64%

Semi-Annual

UBS AG

11/02/20

1.63

USD

2,680

(3)

1-Year Interest Rate Swap, 11/07/21

3-Month LIBOR, 0.23%

Quarterly

1.58%

Semi-Annual

JPMorgan Chase Bank N.A.

11/05/20

1.58

USD

23,790

—

5-Year Interest Rate Swap, 11/11/25

3-Month LIBOR, 0.23%

Quarterly

0.45%

Semi-Annual

Bank of America N.A.

11/09/20

0.45

USD

2,740

(1,401)

5-Year Interest Rate Swap, 11/11/25

3-Month LIBOR, 0.23%

Quarterly

0.45%

Semi-Annual

Bank of America N.A.

11/09/20

0.45

USD

2,220

(1,135)

2-Year Interest Rate Swap, 11/29/22

3-Month LIBOR, 0.23%

Quarterly

2.00%

Semi-Annual

Barclays Bank PLC

11/27/20

2.00

USD

25,750

—

2-Year Interest Rate Swap, 12/13/22

3-Month LIBOR, 0.23%

Quarterly

1.54%

Semi-Annual

Goldman Sachs Bank USA

12/11/20

1.53

USD

12,580

—

2-Year Interest Rate Swap, 12/16/22

3-Month LIBOR, 0.23%

Quarterly

1.53%

Semi-Annual

Citibank N.A.

12/14/20

1.53

USD

12,580

—

2-Year Interest Rate Swap, 12/23/22

3-Month LIBOR, 0.23%

Quarterly

3.05%

Semi-Annual

Nomura International Plc

12/21/20

3.05

USD

9,510

—

2-Year Interest Rate Swap, 12/31/22

3-Month LIBOR, 0.23%

Quarterly

3.25%

Semi-Annual

Citibank N.A.

12/29/20

3.25

USD

14,110

—

10-Year Interest Rate Swap, 03/10/31

3-Month LIBOR, 0.23%

Quarterly

2.79%

Semi-Annual

Barclays Bank PLC

03/08/21

2.79

USD

5,266

(471)

2-Year Interest Rate Swap, 03/10/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.30%

Annual

JPMorgan Chase Bank N.A.

03/08/21

0.30

EUR

12,880

(133)

1-Year Interest Rate Swap, 03/19/22

3-Month LIBOR, 0.23%

Quarterly

0.41%

Semi-Annual

Morgan Stanley & Co. International PLC

03/17/21

0.41

USD

23,790

(1,202)

2-Year Interest Rate Swap, 03/31/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.10%

Annual

Barclays Bank PLC

03/29/21

0.10

EUR

18,360

(532)

10-Year Interest Rate Swap, 04/08/31

3-Month LIBOR, 0.23%

Quarterly

0.69%

Semi-Annual

Barclays Bank PLC

04/06/21

0.69

USD

1,210

(25,464)

10-Year Interest Rate Swap, 04/08/31

3-Month LIBOR, 0.23%

Quarterly

0.69%

Semi-Annual

Deutsche Bank AG

04/06/21

0.69

USD

1,210

(25,766)

10-Year Interest Rate Swap, 04/08/31

3-Month LIBOR, 0.23%

Quarterly

0.71%

Semi-Annual

Barclays Bank PLC

04/06/21

0.71

USD

2,420

(48,303)

S C H E D U L E   O F   I N V E S  T M E N T S 31

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

OTC Interest Rate Swaptions Written (continued)

Paid by the Trust

Received by the Trust

Expiration

Exercise

Notional

Description

Rate

Frequency

Rate

Frequency

Counterparty

Date

Rate

Amount (000)

Value

Put (continued)

10-Year Interest Rate Swap, 04/08/31

3-Month LIBOR, 0.23%

Quarterly

0.73%

Semi-Annual

Morgan Stanley & Co. International PLC

04/06/21

0.73

%

USD

1,440

$

(27,424)

10-Year Interest Rate Swap, 04/09/31

3-Month LIBOR, 0.23%

Quarterly

0.85%

Semi-Annual

Morgan Stanley & Co. International PLC

04/07/21

0.85

USD

965

(13,194)

2-Year Interest Rate Swap, 04/10/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.12%

Annual

Barclays Bank PLC

04/08/21

0.12

EUR

28,360

(863)

10-Year Interest Rate Swap, 04/11/31

3-Month LIBOR, 0.23%

Quarterly

0.87%

Semi-Annual

Morgan Stanley & Co. International PLC

04/09/21

0.87

USD

2,430

(31,748)

2-Year Interest Rate Swap, 04/14/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.10%

Annual

Citibank N.A.

04/12/21

0.10

EUR

14,250

(500)

2-Year Interest Rate Swap, 04/14/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.16%

Annual

Goldman Sachs Bank USA

04/12/21

0.16

EUR

14,250

(388)

10-Year Interest Rate Swap, 04/16/31

3-Month LIBOR, 0.23%

Quarterly

0.88%

Semi-Annual

Barclays Bank PLC

04/14/21

0.88

USD

1,220

(15,919)

10-Year Interest Rate Swap, 04/17/31

3-Month LIBOR, 0.23%

Quarterly

0.77%

Semi-Annual

Bank of America N.A.

04/15/21

0.76

USD

1,155

(20,704)

10-Year Interest Rate Swap, 04/17/31

3-Month LIBOR, 0.23%

Quarterly

0.79%

Semi-Annual

Citibank N.A.

04/15/21

0.79

USD

1,360

(22,783)

10-Year Interest Rate Swap, 04/18/31

3-Month LIBOR, 0.23%

Quarterly

0.72%

Semi-Annual

Bank of America N.A.

04/16/21

0.72

USD

1,155

(23,536)

10-Year Interest Rate Swap, 04/21/31

3-Month LIBOR, 0.23%

Quarterly

0.74%

Semi-Annual

Morgan Stanley & Co. International PLC

04/19/21

0.74

USD

3,820

(73,443)

10-Year Interest Rate Swap, 04/21/31

6-Month EURIBOR, (0.48%)

Semi-Annual

2.15%

Annual

JPMorgan Chase Bank N.A.

04/19/21

2.15

EUR

4,400

(150)

2-Year Interest Rate Swap, 04/21/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.15%

Annual

Morgan Stanley & Co. International PLC

04/19/21

0.15

EUR

14,050

(440)

10-Year Interest Rate Swap, 05/06/31

6-Month EURIBOR, (0.48%)

Semi-Annual

2.00%

Annual

Barclays Bank PLC

05/04/21

2.00

EUR

2,700

(149)

10-Year Interest Rate Swap, 05/13/31

3-Month LIBOR, 0.23%

Quarterly

0.69%

Semi-Annual

Goldman Sachs Bank USA

05/13/21

0.69

USD

2,470

(58,871)

1-Year Interest Rate Swap, 05/19/22

6-Month EURIBOR, (0.48%)

Semi-Annual

0.11%

Annual

Barclays Bank PLC

05/17/21

0.11

EUR

9,299

(471)

1-Year Interest Rate Swap, 05/19/22

3-Month LIBOR, 0.23%

Quarterly

2.35%

Semi-Annual

Citibank N.A.

05/17/21

2.35

USD

45,470

(9)

1-Year Interest Rate Swap, 05/29/22

3-Month LIBOR, 0.23%

Quarterly

2.15%

Semi-Annual

Barclays Bank PLC

05/27/21

2.15

USD

62,210

(22)

2-Year Interest Rate Swap, 06/02/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.08%

Annual

Morgan Stanley & Co. International PLC

05/31/21

0.08

EUR

6,270

(407)

10-Year Interest Rate Swap, 06/03/31

3-Month LIBOR, 0.23%

Quarterly

1.00%

Semi-Annual

Bank of America N.A.

06/01/21

1.00

USD

10,670

(122,417)

1-Year Interest Rate Swap, 06/03/22

3-Month LIBOR, 0.23%

Quarterly

2.40%

Semi-Annual

Morgan Stanley & Co. International PLC

06/01/21

2.40

USD

77,400

(20)

10-Year Interest Rate Swap, 06/04/31

3-Month LIBOR, 0.23%

Quarterly

0.75%

Semi-Annual

Deutsche Bank AG

06/02/21

0.75

USD

4,800

(103,989)

10-Year Interest Rate Swap, 06/09/31

3-Month LIBOR, 0.23%

Quarterly

3.87%

Semi-Annual

Barclays Bank PLC

06/07/21

3.87

USD

8,000

(407)

2-Year Interest Rate Swap, 06/12/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.05%

Annual

Barclays Bank PLC

06/10/21

0.05

EUR

9,800

(777)

10-Year Interest Rate Swap, 06/13/31

3-Month LIBOR, 0.23%

Quarterly

1.05%

Semi-Annual

Bank of America N.A.

06/11/21

1.05

USD

2,390

(25,201)

32

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

OTC Interest Rate Swaptions Written (continued)

Paid by the Trust

Received by the Trust

Expiration

Exercise

Notional

Description

Rate

Frequency

Rate

Frequency

Counterparty

Date

Rate

Amount (000)

Value

Put (continued)

2-Year Interest Rate Swap, 06/16/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.00%

Annual

Barclays Bank PLC

06/14/21

—

EUR

4,310

$

(433)

2-Year Interest Rate Swap, 06/16/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.00%

Annual

Bank of America N.A.

06/14/21

—

EUR

4,430

(445)

2-Year Interest Rate Swap, 06/20/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.00%

Annual

Goldman Sachs Bank USA

06/18/21

—

EUR

4,460

(461)

2-Year Interest Rate Swap, 06/23/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.00%

Annual

Citibank N.A.

06/21/21

—

EUR

5,200

(548)

10-Year Interest Rate Swap, 06/27/31

3-Month LIBOR, 0.23%

Quarterly

0.74%

Semi-Annual

Bank of America N.A.

06/25/21

0.74

%

USD

2,450

(56,855)

2-Year Interest Rate Swap, 06/27/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.00%

Annual

Nomura International Plc

06/25/21

—

EUR

4,880

(528)

10-Year Interest Rate Swap, 07/01/31

3-Month LIBOR, 0.23%

Quarterly

0.72%

Semi-Annual

BNP Paribas S.A.

06/29/21

0.72

USD

2,450

(60,803)

2-Year Interest Rate Swap, 07/03/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.00%

Annual

Barclays Bank PLC

07/01/21

—

EUR

5,230

(589)

2-Year Interest Rate Swap, 07/04/23

6-Month EURIBOR, (0.48%)

Semi-Annual

(0.05%)

Annual

Barclays Bank PLC

07/02/21

(0.05)

EUR

5,120

(720)

10-Year Interest Rate Swap, 07/16/31

3-Month LIBOR, 0.23%

Quarterly

0.67%

Semi-Annual

Bank of America N.A.

07/14/21

0.67

USD

2,490

(70,863)

10-Year Interest Rate Swap, 07/16/31

3-Month LIBOR, 0.23%

Quarterly

1.10%

Semi-Annual

Citibank N.A.

07/14/21

1.10

USD

1,530

(16,207)

10-Year Interest Rate Swap, 07/18/31

3-Month LIBOR, 0.23%

Quarterly

1.10%

Semi-Annual

Citibank N.A.

07/16/21

1.10

USD

1,570

(16,792)

2-Year Interest Rate Swap, 07/21/23

6-Month EURIBOR, (0.48%)

Semi-Annual

0.00%

Annual

Barclays Bank PLC

07/19/21

—

EUR

5,270

(675)

10-Year Interest Rate Swap, 08/06/31

3-Month LIBOR, 0.23%

Quarterly

0.95%

Semi-Annual

Barclays Bank PLC

08/04/21

0.95

USD

2,190

(35,252)

10-Year Interest Rate Swap, 08/07/31

3-Month LIBOR, 0.23%

Quarterly

0.95%

Semi-Annual

Deutsche Bank AG

08/05/21

0.95

USD

2,390

(38,684)

10-Year Interest Rate Swap, 08/11/31

3-Month LIBOR, 0.23%

Quarterly

0.63%

Semi-Annual

Deutsche Bank AG

08/09/21

0.63

USD

14,190

(450,386)

10-Year Interest Rate Swap, 08/11/31

3-Month LIBOR, 0.23%

Quarterly

1.00%

Semi-Annual

Deutsche Bank AG

08/09/21

1.00

USD

7,350

(107,219)

2-Year Interest Rate Swap, 08/11/23

6-Month EURIBOR, (0.48%)

Semi-Annual

(0.25%)

Annual

Barclays Bank PLC

08/09/21

(0.25)

EUR

30,000

(13,950)

2-Year Interest Rate Swap, 08/11/23

6-Month EURIBOR, (0.48%)

Semi-Annual

(0.15%)

Annual

Barclays Bank PLC

08/09/21

(0.15)

EUR

12,480

(3,522)

2-Year Interest Rate Swap, 08/11/23

6-Month EURIBOR, (0.48%)

Semi-Annual

(0.15%)

Annual

Barclays Bank PLC

08/09/21

(0.15)

EUR

6,990

(1,973)

2-Year Interest Rate Swap, 09/05/23

6-Month EURIBOR, (0.48%)

Semi-Annual

(0.25%)

Annual

Barclays Bank PLC

09/03/21

(0.25)

EUR

22,950

(12,022)

5-Year Interest Rate Swap, 09/05/26

3-Month LIBOR, 0.23%

Quarterly

0.60%

Semi-Annual

Deutsche Bank AG

09/03/21

0.60

USD

10,390

(49,722)

10-Year Interest Rate Swap, 10/02/31

3-Month LIBOR, 0.23%

Quarterly

1.45%

Semi-Annual

Bank of America N.A.

09/30/21

1.45

USD

6,560

(41,686)

10-Year Interest Rate Swap, 01/12/32

3-Month LIBOR, 0.23%

Quarterly

1.15%

Semi-Annual

Bank of America N.A.

01/10/22

1.15

USD

1,400

(22,558)

S C H E D U L E   O F   I N V E S  T M E N T S 33

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

OTC Interest Rate Swaptions Written (continued)

Paid by the Trust

Received by the Trust

Expiration

Exercise

Notional

Description

Rate

Frequency

Rate

Frequency

Counterparty

Date

Rate

Amount (000)

Value

Put (continued)

10-Year Interest Rate Swap, 01/30/32

3-Month LIBOR, 0.23%

Quarterly

1.95%

Semi-Annual

Morgan Stanley & Co. International PLC

01/28/22

1.95

%

USD

4,010

$

(15,637)

10-Year Interest Rate Swap, 02/09/32

3-Month LIBOR, 0.23%

Quarterly

0.68%

Semi-Annual

Deutsche Bank AG

02/07/22

0.68

USD

2,870

(108,940)

10-Year Interest Rate Swap, 02/24/32

3-Month LIBOR, 0.23%

Quarterly

1.85%

Semi-Annual

Bank of America N.A.

02/22/22

1.85

USD

2,970

(15,045)

10-Year Interest Rate Swap, 03/02/22

3-Month LIBOR, 0.23%

Quarterly

1.60%

Semi-Annual

Deutsche Bank AG

02/28/22

1.60

USD

2,840

(22,815)

10-Year Interest Rate Swap, 03/05/32

3-Month LIBOR, 0.23%

Quarterly

1.60%

Semi-Annual

Deutsche Bank AG

03/03/22

1.60

USD

2,840

(23,050)

10-Year Interest Rate Swap, 03/06/32

3-Month LIBOR, 0.23%

Quarterly

1.60%

Semi-Annual

Deutsche Bank AG

03/04/22

1.60

USD

4,485

(36,485)

10-Year Interest Rate Swap, 03/06/32

3-Month LIBOR, 0.23%

Quarterly

1.60%

Semi-Annual

Barclays Bank PLC

03/04/22

1.60

USD

2,818

(22,924)

5-Year Interest Rate Swap, 04/06/27

6-Month EURIBOR, (0.48%)

Semi-Annual

(0.12%)

Annual

Barclays Bank PLC

04/04/22

(0.12)

EUR

5,250

(28,676)

5-Year Interest Rate Swap, 04/09/27

6-Month EURIBOR, (0.48%)

Semi-Annual

(0.02%)

Annual

Barclays Bank PLC

04/07/22

(0.02)

EUR

6,030

(25,692)

10-Year Interest Rate Swap, 05/04/32

3-Month LIBOR, 0.23%

Quarterly

0.74%

Semi-Annual

Deutsche Bank AG

05/02/22

0.74

USD

2,540

(97,818)

5-Year Interest Rate Swap, 05/05/27

3-Month LIBOR, 0.23%

Quarterly

3.25%

Semi-Annual

Goldman Sachs Bank USA

05/03/22

3.25

USD

10,130

(728)

10-Year Interest Rate Swap, 05/11/31

3-Month LIBOR, 0.23%

Quarterly

2.75%

Semi-Annual

Nomura International Plc

05/09/22

2.75

USD

10,350

(16,136)

5-Year Interest Rate Swap, 06/17/27

3-Month LIBOR, 0.23%

Quarterly

0.61%

Semi-Annual

Morgan Stanley & Co. International PLC

06/15/22

0.61

USD

6,790

(74,188)

10-Year Interest Rate Swap, 08/04/32

3-Month LIBOR, 0.23%

Quarterly

2.75%

Semi-Annual

JPMorgan Chase Bank N.A.

08/02/22

2.75

USD

4,160

(8,236)

10-Year Interest Rate Swap, 08/04/32

3-Month LIBOR, 0.23%

Quarterly

3.25%

Semi-Annual

JPMorgan Chase Bank N.A.

08/02/22

3.25

USD

4,160

(4,111)

10-Year Interest Rate Swap, 08/10/32

3-Month LIBOR, 0.23%

Quarterly

0.72%

Semi-Annual

Deutsche Bank AG

08/08/22

0.72

USD

970

(42,790)

10-Year Interest Rate Swap, 08/10/32

3-Month LIBOR, 0.23%

Quarterly

2.75%

Semi-Annual

Barclays Bank PLC

08/08/22

2.75

USD

4,270

(8,577)

10-Year Interest Rate Swap, 08/10/32

3-Month LIBOR, 0.23%

Quarterly

3.25%

Semi-Annual

Barclays Bank PLC

08/08/22

3.25

USD

4,270

(4,280)

5-Year Interest Rate Swap, 08/10/27

6-Month EURIBOR, (0.48%)

Semi-Annual

(0.02%)

Annual

Barclays Bank PLC

08/08/22

(0.02)

EUR

6,690

(39,544)

5-Year Interest Rate Swap, 09/14/27

6-Month EURIBOR, (0.48%)

Semi-Annual

(0.14%)

Annual

Barclays Bank PLC

09/12/22

(0.14)

EUR

2,720

(22,947)

5-Year Interest Rate Swap, 09/15/27

6-Month EURIBOR, (0.48%)

Semi-Annual

(0.04%)

Annual

Barclays Bank PLC

09/13/22

(0.04)

EUR

2,720

(18,094)

1-Year Interest Rate Swap, 04/08/24

3-Month LIBOR, 0.23%

Quarterly

0.61%

Semi-Annual

Bank of America N.A.

04/06/23

0.61

USD

8,740

(10,473)

1-Year Interest Rate Swap, 04/11/24

3-Month LIBOR, 0.23%

Quarterly

0.69%

Semi-Annual

Deutsche Bank AG

04/11/23

0.69

USD

13,770

(14,099)

10-Year Interest Rate Swap, 06/15/34

3-Month LIBOR, 0.23%

Quarterly

3.00%

Semi-Annual

Morgan Stanley & Co. International PLC

06/13/24

3.00

USD

3,950

(24,077)

10-Year Interest Rate Swap, 06/15/34

3-Month LIBOR, 0.23%

Quarterly

3.50%

Semi-Annual

Morgan Stanley & Co. International PLC

06/13/24

3.50

USD

3,950

(14,116)

10-Year Interest Rate Swap, 06/22/26

3-Month LIBOR, 0.23%

Quarterly

3.00%

Semi-Annual

Morgan Stanley & Co. International PLC

06/20/24

3.00

USD

3,950

(24,309)

10-Year Interest Rate Swap, 06/22/26

3-Month LIBOR, 0.23%

Quarterly

3.50%

Semi-Annual

Morgan Stanley & Co. International PLC

06/20/24

3.50

USD

3,950

(14,265)

34

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

OTC Interest Rate Swaptions Written (continued)

Paid by the Trust

Received by the Trust

Counterparty

Expiration Date

Exercise Rate

Notional Amount (000)

Value

Description

Rate

Frequency

Rate

Frequency

Put (continued)

10-Year Interest Rate Swap, 08/22/34

3-Month LIBOR, 0.23%

Quarterly

2.25%

Semi-Annual

Morgan Stanley & Co. International PLC

08/20/24

2.25

%

USD

4,410

$

(66,272

)

10-Year Interest Rate Swap, 03/14/39

3-Month LIBOR, 0.23%

Quarterly

3.05%

Semi-Annual

Barclays Bank PLC

03/12/29

3.05

USD

2,840

(56,329

)

(2,511,791

)

$

(9,261,577

)

Centrally Cleared Credit Default Swaps — Buy Protection

Reference Obligation/Index	Financing Rate Paid by the Trust			Payment Frequency		Termination Date		Notional Amount (000)			Value			Upfront Premium Paid (Received)			Unrealized Appreciation (Depreciation)
CDX.NA.HY.34.V9		5.00	%		Quarterly		06/20/25		USD	2,001	$	(101,127	)	$	(81,555	)	$	(19,572	)
CDX.NA.IG.34.V1		1.00			Quarterly		06/20/25		USD	16,814		(120,603	)		(247,474	)		126,871
CDX.NA.HY.35.V1		5.00			Quarterly		12/20/25		USD	3,700		(156,743	)		(151,673	)		(5,070	)
CDX.NA.IG.35.V1		1.00			Quarterly		12/20/25		USD	26,500		(559,647	)		(605,653	)		46,006
											$	(938,120	)	$	(1,086,355	)	$	148,235

Centrally Cleared Credit Default Swaps — Sell Protection

Reference Obligation/Index

Financing Rate Received by the Trust

Payment Frequency

Termination Date

Credit Rating(a)

Notional Amount (000)(b)

Value

Upfront Premium Paid (Received)

Unrealized Appreciation (Depreciation)

ITRAXX.XO.34.V1

5.00

%

Quarterly

12/20/25

B

EUR

20

$

1,710

$

1,614

$

96

^(a)  Using the rating of the issuer or the underlying securities of the index, as applicable, provided by S&P Global Ratings.

^(b)  The maximum potential amount the Trust may pay should a negative credit event take place as defined under the terms of the agreement.

Centrally Cleared Interest Rate Swaps

Paid by the Trust		Received by the Trust		Effective			Termination		Notional					Upfront Premium Paid		Unrealized Appreciation
Rate	Frequency	Rate	Frequency	Date			Date		Amount (000)		Value			(Received)		(Depreciation)
3-Month LIBOR, 0.23%	Quarterly	1.53%	Semi-Annual		N/A			11/23/20	USD	11,880	$	83,985		$	18	$	83,967
1.56%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		N/A			03/29/21	USD	5,660		(37,752	)		30		(37,782	)
1.77%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		N/A			06/15/21	USD	8,210		(131,227	)		62		(131,289	)
3-Month LIBOR, 0.23%	Quarterly	1.36%	Semi-Annual		N/A			09/28/21	USD	3,500		40,084			37		40,047
(0.45%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		N/A			12/16/21	EUR	5,440		19,085			44		19,041
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.30%)	Annual		N/A			01/17/22	EUR	11,040		9,165			208		8,957
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.48%)	Annual		N/A			03/07/22	EUR	5,950		(16,227	)		57		(16,284	)
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.48%)	Annual		N/A			03/07/22	EUR	7,180		(19,660	)		70		(19,730	)
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.49%)	Annual		N/A			03/09/22	EUR	4,550		(13,664	)		45		(13,709	)
(0.35%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		N/A			03/21/22	EUR	2,820		(680	)		28		(708	)
(0.34%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		N/A			03/21/22	EUR	2,830		(1,943	)		28		(1,971	)
3-Month LIBOR, 0.23%	Quarterly	2.03%	Semi-Annual		N/A			03/30/22	USD	1,914		52,471			17		52,454
3-Month LIBOR, 0.23%	Quarterly	0.33%	Semi-Annual		04/06/21	(a)		04/06/22	USD	37,775		51,868			406		51,462
3-Month LIBOR, 0.23%	Quarterly	0.28%	Semi-Annual		05/06/21	(a)		05/06/22	USD	6,000		4,791			64		4,727
3-Month LIBOR, 0.23%	Quarterly	2.01%	Semi-Annual		05/17/21	(a)		05/17/22	USD	756		13,674			2,243		11,431
1.87%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		06/03/21	(a)		06/03/22	USD	3,450		(57,670	)		36		(57,706	)
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.25%)	Annual		N/A			06/24/22	EUR	2,499		10,719			28		10,691
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.29%)	Annual		N/A			06/27/22	EUR	937		3,180			10		3,170
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.28%)	Annual		N/A			06/27/22	EUR	937		3,455			11		3,444
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.28%)	Annual		N/A			06/30/22	EUR	938		3,602			11		3,591
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.32%)	Annual		N/A			07/18/22	EUR	4,580		14,132			55		14,077
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.31%)	Annual		N/A			07/18/22	EUR	4,580		15,045			1,137		13,908
3-Month LIBOR, 0.23%	Quarterly	0.32%	Semi-Annual		N/A			07/18/22	USD	810		1,599			9		1,590

S C H E D U L E   O F   I N V E S  T M E N T S 35

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

Centrally Cleared Interest Rate Swaps (continued)

Paid by the Trust		Received by the Trust		Effective Date			Termination Date		Notional Amount (000)		Value			Upfront Premium Paid (Received)			Unrealized Appreciation (Depreciation)
Rate	Frequency	Rate	Frequency
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.30%)	Annual		N/A			07/20/22	EUR	5,250	$	18,821		$	63		$	18,758
(0.40%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		N/A			07/21/22	EUR	5,460		(7,384	)		68			(7,452	)
0.21%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		01/06/21	(a)		09/15/22	USD	40,540		(5,893	)		530			(6,423	)
(0.26%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		N/A			09/22/22	EUR	5,170		(27,688	)		68			(27,756	)
3-Month LIBOR, 0.23%	Quarterly	1.34%	Semi-Annual		N/A			09/28/22	USD	6,240		140,867			73			140,794
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.33%)	Annual		10/02/20	(a)		10/03/22	EUR	6,310		23,526			85			23,441
3-Month LIBOR, 0.23%	Quarterly	1.25%	Semi-Annual		10/06/20	(a)		10/06/22	USD	7,335		151,817			86			151,731
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.35%)	Annual		11/02/20			11/02/22	EUR	3,570		11,768			47			11,721
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.33%)	Annual		02/12/21	(a)		02/13/23	EUR	1,390		4,945			19			4,926
(0.41%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		02/16/21	(a)		02/16/23	EUR	7,530		(13,878	)		108			(13,986	)
(0.40%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		02/16/21	(a)		02/16/23	EUR	7,440		(14,418	)		107			(14,525	)
3-Month LIBOR, 0.23%	Quarterly	1.05%	Semi-Annual		03/01/21	(a)		03/01/23	USD	3,325		55,629			39			55,590
3-Month LIBOR, 0.23%	Quarterly	1.06%	Semi-Annual		03/01/21	(a)		03/01/23	USD	3,325		55,894			39			55,855
3-Month LIBOR, 0.23%	Quarterly	1.07%	Semi-Annual		03/01/21	(a)		03/01/23	USD	3,350		57,085			40			57,045
3-Month LIBOR, 0.23%	Quarterly	1.10%	Semi-Annual		03/01/21	(a)		03/01/23	USD	13,390		235,797			159			235,638
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.41%)	Annual		03/02/21	(a)		03/02/23	EUR	2,450		3,999			33			3,966
3-Month LIBOR, 0.23%	Quarterly	0.88%	Semi-Annual		03/02/21	(a)		03/02/23	USD	3,350		44,424			40			44,384
3-Month LIBOR, 0.23%	Quarterly	0.88%	Semi-Annual		03/02/21	(a)		03/02/23	USD	6,665		88,916			79			88,837
3-Month LIBOR, 0.23%	Quarterly	0.88%	Semi-Annual		03/02/21	(a)		03/02/23	USD	6,700		88,915			80			88,835
3-Month LIBOR, 0.23%	Quarterly	0.90%	Semi-Annual		03/02/21	(a)		03/02/23	USD	3,350		46,198			40			46,158
3-Month LIBOR, 0.23%	Quarterly	0.98%	Semi-Annual		03/02/21	(a)		03/02/23	USD	3,360		51,372			40			51,332
3-Month LIBOR, 0.23%	Quarterly	0.99%	Semi-Annual		03/02/21	(a)		03/02/23	USD	3,360		51,943			40			51,903
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.47%)	Annual		03/04/21	(a)		03/06/23	EUR	2,970		609			40			569
(0.18%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		03/24/21	(a)		03/24/23	EUR	11,815		(85,986	)		155			(86,141	)
(0.18%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		03/24/21	(a)		03/24/23	EUR	11,800		(84,477	)		154			(84,631	)
(0.17%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		03/24/21	(a)		03/24/23	EUR	11,815		(87,731	)		155			(87,886	)
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.31%)	Annual		04/29/21	(a)		04/28/23	EUR	2,660		10,967			35			10,932
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.34%)	Annual		05/03/21	(a)		05/03/23	EUR	3,560		11,685			47			11,638
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.38%)	Annual		05/04/21	(a)		05/04/23	EUR	3,410		7,989			45			7,944
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.37%)	Annual		05/06/21	(a)		05/08/23	EUR	1,570		4,204			21			4,183
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.42%)	Annual		06/24/21	(a)		06/26/23	EUR	2,720		4,075			88			3,987
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.40%)	Annual		06/25/21	(a)		06/26/23	EUR	2,700		5,326			(20	)		5,346
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.42%)	Annual		07/02/21	(a)		07/03/23	EUR	5,690		7,954			206			7,748
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.40%)	Annual		07/08/21	(a)		07/10/23	EUR	2,610		4,800			105			4,695
3-Month LIBOR, 0.23%	Quarterly	0.25%	Semi-Annual		07/08/22	(a)		07/10/23	USD	5,380		(2,068	)		58			(2,126	)
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.41%)	Annual		07/20/21	(a)		07/20/23	EUR	5,730		9,151			80			9,071
(0.30%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		07/26/21	(a)		07/25/23	EUR	12,900		(54,059	)		202			(54,261	)
(0.29%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		07/26/21	(a)		07/26/23	EUR	14,350		(63,610	)		226			(63,836	)
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.41%)	Annual		07/27/21	(a)		07/27/23	EUR	2,700		4,191			38			4,153
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.43%)	Annual		08/05/21	(a)		08/07/23	EUR	2,050		2,302			30			2,272
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.43%)	Annual		08/09/21	(a)		08/09/23	EUR	1,590		1,702			(142	)		1,844
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.45%)	Annual		08/11/21	(a)		08/11/23	EUR	1,730		897			27			870
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.58%)	Annual		08/17/21	(a)		08/17/23	EUR	1,760		(4,253	)		28			(4,281	)
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.44%)	Annual		08/24/21	(a)		08/24/23	EUR	620		517			9			508
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.47%)	Annual		09/13/21	(a)		09/13/23	EUR	6,690		823			97			726
1.61%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		11/01/21	(a)		11/01/23	USD	3,260		(86,709	)		38			(86,747	)
(0.17%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		12/13/21	(a)		12/13/23	EUR	5,190		(36,854	)		81			(36,935	)
(0.12%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		12/27/21	(a)		12/27/23	EUR	770		(6,385	)		12			(6,397	)
(0.06%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		01/03/22	(a)		01/03/24	EUR	2,735		(26,475	)		43			(26,518	)
(0.05%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		01/03/22	(a)		01/03/24	EUR	2,735		(26,899	)		43			(26,942	)
(0.17%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		N/A			11/11/24	EUR	1,160		(13,903	)		15			(13,918	)
(0.22%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		N/A			11/21/24	EUR	3,890		(37,046	)		51			(37,097	)
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.23%)	Annual		N/A			12/02/24	EUR	6,710		60,912			95			60,817
0.30%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		01/06/21	(a)		02/28/25	USD	6,260		4,842			964			3,878
0.30%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		01/06/21	(a)		02/28/25	USD	11,270		7,121			151			6,970
(0.18%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		N/A			03/18/25	EUR	270		(3,586	)		4			(3,590	)
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.43%)	Annual		N/A			09/22/25	EUR	1,330		(215	)		(506	)		291
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.44%)	Annual		N/A			09/23/25	EUR	500		(438	)		8			(446	)
3-Month LIBOR, 0.23%	Quarterly	0.33%	Semi-Annual		N/A			09/23/25	USD	1,180		(1,246	)		16			(1,262	)
0.35%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		10/01/20	(a)		10/01/25	USD	970		471			13			458
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.34%)	Annual		07/20/21	(a)		07/20/26	EUR	2,160		6,312			38			6,274

36

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

Centrally Cleared Interest Rate Swaps (continued)

Paid by the Trust		Received by the Trust		Effective Date			Termination Date		Notional Amount (000)		Value			Upfront Premium Paid (Received)			Unrealized Appreciation (Depreciation)
Rate	Frequency	Rate	Frequency
0.65%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		04/20/22	(a)		04/20/27	USD	530	$	(2,589	)	$	7		$	(2,596	)
(0.26%)	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		08/16/22	(a)		08/16/27	EUR	1,470		(5,098	)		27			(5,125	)
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.25%)	Annual		08/16/22	(a)		08/16/27	EUR	5,890		23,273			107			23,166
3-Month LIBOR, 0.23%	Quarterly	0.50%	Semi-Annual		12/31/20			08/16/27	USD	15,490		(9,507	)		225			(9,732	)
0.50%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		N/A			08/19/27	USD	1,310		(624	)		19			(643	)
6-Month EURIBOR, (0.48%)	Semi-Annual	(0.28%)	Annual		09/19/22	(a)		09/20/27	EUR	1,340		2,090			(382	)		2,472
6-Month JPY LIBOR, 0.26%	Semi-Annual	0.37%	Semi-Annual		N/A			01/31/28	JPY	181,730		50,865			21			50,844
3-Month LIBOR, 0.23%	Quarterly	0.65%	Semi-Annual		07/12/23	(a)		07/12/28	USD	7,950		(37,152	)		106			(37,258	)
6-Month JPY LIBOR, 0.26%	Semi-Annual	0.36%	Semi-Annual		N/A			07/31/28	JPY	113,000		32,738			14			32,724
3-Month LIBOR, 0.23%	Quarterly	0.71%	Semi-Annual		08/14/23	(a)		08/14/28	USD	6,340		(17,289	)		85			(17,374	)
0.19%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		N/A			01/04/29	JPY	100,000		(16,234	)		13			(16,247	)
1.37%	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		N/A			02/20/29	EUR	1,970		(351,790	)		39			(351,829	)
1.38%	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		N/A			02/22/29	EUR	590		(105,930	)		12			(105,942	)
6-Month EURIBOR, (0.48%)	Semi-Annual	0.56%	Annual		N/A			03/12/29	EUR	1,640		148,992			28			148,964
6-Month EURIBOR, (0.48%)	Semi-Annual	0.06%	Annual		N/A			07/26/29	EUR	930		34,325			16			34,309
0.19%	Annual	6-Month EURIBOR, (0.48%)	Semi-Annual		N/A			01/16/30	EUR	2,280		(117,808	)		447			(118,255	)
1.31%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		N/A			02/27/30	USD	2,770		(164,693	)		42			(164,735	)
3-Month LIBOR, 0.23%	Quarterly	1.32%	Semi-Annual		N/A			02/27/30	USD	2,430		145,049			37			145,012
3-Month LIBOR, 0.23%	Quarterly	0.64%	Semi-Annual		N/A			04/29/30	USD	2,160		(7,052	)		33			(7,085	)
3-Month LIBOR, 0.23%	Quarterly	0.60%	Semi-Annual		N/A			05/20/30	USD	2,320		(17,473	)		35			(17,508	)
0.68%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		N/A			05/20/30	USD	770		(621	)		12			(633	)
3-Month LIBOR, 0.23%	Quarterly	0.67%	Semi-Annual		N/A			06/03/30	USD	1,850		(2,505	)		28			(2,533	)
3-Month LIBOR, 0.23%	Quarterly	0.64%	Semi-Annual		N/A			07/10/30	USD	780		(4,580	)		12			(4,592	)
1.20%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		N/A			08/19/30	USD	30		(1,454	)		—			(1,454	)
3-Month LIBOR, 0.23%	Quarterly	1.02%	Semi-Annual		N/A			09/09/30	USD	1,885		56,834			30			56,804
0.68%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		N/A			09/16/30	USD	2,760		9,817			43			9,774
3-Month LIBOR, 0.23%	Quarterly	0.69%	Semi-Annual		N/A			09/16/30	USD	880		(2,307	)		14			(2,321	)
3-Month LIBOR, 0.23%	Quarterly	0.69%	Semi-Annual		N/A			09/23/30	USD	880		(2,850	)		14			(2,864	)
3-Month LIBOR, 0.23%	Quarterly	0.70%	Semi-Annual		10/01/20	(a)		10/01/30	USD	870		(1,623	)		14			(1,637	)
0.67%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		10/09/20	(a)		10/09/30	USD	2,730		13,746			43			13,703
0.65%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		11/04/20			11/04/30	USD	2,740		21,362			43			21,319
3-Month LIBOR, 0.23%	Quarterly	1.76%	Semi-Annual		01/11/21	(a)		01/13/31	USD	760		75,310			12			75,298
3-Month LIBOR, 0.23%	Quarterly	0.75%	Semi-Annual		N/A			04/07/31	USD	210		(613	)		3			(616	)
3-Month LIBOR, 0.23%	Quarterly	2.45%	Semi-Annual		05/18/21	(a)		05/19/31	USD	860		139,535			13			139,522
0.76%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		06/03/21	(a)		06/03/31	USD	3,648		13,495			57			13,438
3-Month LIBOR, 0.23%	Quarterly	2.10%	Semi-Annual		06/22/21	(a)		06/23/31	USD	430		54,683			7			54,676
0.86%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		N/A			10/06/31	USD	290		(491	)		5			(496	)
0.52%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		11/30/21	(a)		11/28/31	JPY	95,000		(41,598	)		16			(41,614	)
0.80%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		02/08/22	(a)		02/09/32	USD	1,330		10,701			21			10,680
0.77%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		05/06/22	(a)		05/06/32	USD	2,650		36,538			42			36,496
1.02%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		06/07/22	(a)		06/07/32	USD	500		(4,630	)		8			(4,638	)
0.85%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		08/15/22	(a)		08/16/32	USD	17,650		163,886			69,006			94,880
3-Month LIBOR, 0.23%	Quarterly	0.85%	Semi-Annual		08/15/22	(a)		08/16/32	USD	19,000		(176,421	)		304			(176,725	)
0.85%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		08/15/22	(a)		08/16/32	USD	19,000		176,421			(31,130	)		207,551
0.36%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		N/A			02/06/34	JPY	30,720		(10,054	)		4			(10,058	)
0.34%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		N/A			02/08/34	JPY	50,250		(15,175	)		8			(15,183	)
0.34%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		N/A			03/14/34	JPY	24,760		(7,400	)		4			(7,404	)
2.33%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		06/24/24	(a)		06/26/34	USD	310		(34,979	)		5			(34,984	)
1.65%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		08/22/24	(a)		08/22/34	USD	1,355		(62,398	)		21			(62,419	)
6-Month JPY LIBOR, 0.26%	Semi-Annual	0.14%	Semi-Annual		N/A			06/12/35	JPY	250,000		1,908			43			1,865
0.16%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		N/A			07/09/35	JPY	107,580		(4,726	)		19			(4,745	)
6-Month JPY LIBOR, 0.26%	Semi-Annual	0.13%	Semi-Annual		N/A			09/18/35	JPY	50,000		(615	)		9			(624	)
6-Month JPY LIBOR, 0.26%	Semi-Annual	0.13%	Semi-Annual		N/A			09/18/35	JPY	50,000		(597	)		9			(606	)
3-Month LIBOR, 0.23%	Quarterly	3.18%	Semi-Annual		05/09/28	(a)		05/10/38	USD	1,590		260,548			24			260,524
3.08%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		06/29/28	(a)		06/29/38	USD	230		(35,448	)		3			(35,451	)
0.66%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		N/A			12/06/38	JPY	40,000		(32,024	)		8			(32,032	)
0.62%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		N/A			12/14/38	JPY	25,000		(18,223	)		5			(18,228	)
0.41%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		N/A			04/04/39	JPY	26,190		(9,704	)		6			(9,710	)
2.82%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		04/04/29	(a)		04/04/39	USD	3,000		(382,509	)		46			(382,555	)
0.33%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		N/A			06/10/39	JPY	27,540		(5,975	)		6			(5,981	)
0.30%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		N/A			06/17/39	JPY	25,860		(4,008	)		5			(4,013	)

S C H E D U L E   O F   I N V E S  T M E N T S 37

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

Centrally Cleared Interest Rate Swaps (continued)

Paid by the Trust		Received by the Trust		Effective Date			Termination Date		Notional Amount (000)		Value			Upfront Premium Paid (Received)		Unrealized Appreciation (Depreciation)
Rate	Frequency	Rate	Frequency
0.17%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		N/A			08/08/39	JPY	22,870	$	1,898		$	5	$	1,893
1.01%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		04/02/30	(a)		04/03/40	USD	4,100		152,560			66		152,494
0.72%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		03/21/24	(a)		03/22/44	JPY	19,000		(13,369	)		4		(13,373	)
0.20%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		08/28/24	(a)		08/30/44	JPY	12,720		3,612			3		3,609
0.37%	Semi-Annual	6-Month JPY LIBOR, 0.26%	Semi-Annual		01/30/25	(a)		01/30/45	JPY	20,250		(231	)		5		(236	)
3-Month LIBOR, 0.23%	Quarterly	1.08%	Semi-Annual		12/31/20			02/15/47	USD	2,240		(23,081	)		52		(23,133	)
3-Month LIBOR, 0.23%	Quarterly	1.09%	Semi-Annual		12/31/20			02/15/47	USD	2,080		(15,041	)		48		(15,089	)
3.02%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		12/08/38	(a)		12/08/48	USD	400		(54,424	)		6		(54,430	)
2.38%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		07/05/39	(a)		07/06/49	USD	620		(52,578	)		10		(52,588	)
1.71%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		08/16/39	(a)		08/16/49	USD	600		(18,905	)		9		(18,914	)
1.78%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		08/16/39	(a)		08/16/49	USD	500		(18,745	)		8		(18,753	)
1.67%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		08/17/39	(a)		08/17/49	USD	460		(12,936	)		7		(12,943	)
1.25%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		N/A			03/07/50	USD	460		(14,909	)		10		(14,919	)
1.10%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		N/A			11/25/50	USD	750		5,886			17		5,869
0.88%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		07/12/23	(a)		07/14/53	USD	1,470		127,338			34		127,304
1.02%	Semi-Annual	3-Month LIBOR, 0.23%	Quarterly		08/14/23	(a)		08/14/53	USD	1,160		60,147			27		60,120
3-Month LIBOR, 0.23%	Quarterly	1.93%	Semi-Annual		12/01/26	(a)		12/01/56	USD	110		18,042			2		18,040
											$	546,210		$	49,373	$	496,837

^(a)  Forward Swap.

OTC Credit Default Swaps — Sell Protection

Reference Obligation/Index	Financing Rate Received by the Trust		Payment Frequency	Counterparty	Termination Date	Credit Rating(a)	Notional Amount (000)(b)			Value			Upfront Premium Paid (Received)			Unrealized Appreciation (Depreciation)
Casino Guichard Perrachon SA	1.00	%	Quarterly	Barclays Bank PLC	12/20/23	B	EUR	30	$	(8,536	)	$	(3,215	)	$	(5,321	)
Garfunkelux Holdco 2 SA	5.00		Quarterly	Credit Suisse International	12/20/24	B+	EUR	20		(3,430	)		0			(3,430	)
Rolls-Royce PLC	1.00		Quarterly	Citibank N.A.	06/20/25	BB-	EUR	38		(1,200	)		(1,070	)		(130	)
Rolls-Royce PLC	1.00		Quarterly	Citibank N.A.	06/20/25	BB-	EUR	82		(2,631	)		(2,353	)		(278	)
Rolls-Royce PLC	1.00		Quarterly	JPMorgan Chase Bank N.A.	06/20/25	BB-	EUR	90		(1,916	)		(1,395	)		(521	)
CMBX.NA.8	3.00		Monthly	Barclays Bank PLC	10/17/57	NR	USD	5,000		(1,405,867	)		(497,629	)		(908,238	)
CMBX.NA.8	3.00		Monthly	Credit Suisse International	10/17/57	NR	USD	2,500		(702,934	)		(246,140	)		(456,794	)
CMBX.NA.8	3.00		Monthly	Morgan Stanley & Co. International PLC	10/17/57	NR	USD	5,550		(1,560,514	)		(725,031	)		(835,483	)
CMBX.NA.9	3.00		Monthly	Credit Suisse International	09/17/58	NR	USD	5,000		(1,313,650	)		(533,162	)		(780,488	)
CMBX.NA.9	3.00		Monthly	Credit Suisse International	09/17/58	NR	USD	5,000		(1,313,650	)		(533,162	)		(780,488	)
CMBX.NA.9	3.00		Monthly	Credit Suisse International	09/17/58	NR	USD	5,000		(1,313,649	)		(527,338	)		(786,311	)
CMBX.NA.9	3.00		Monthly	Credit Suisse International	09/17/58		USD	5,000		(1,313,649	)		(533,111	)		(780,538	)
CMBX.NA.9	3.00		Monthly	Morgan Stanley & Co. International PLC	09/17/58	NR	USD	9,450		(2,482,797	)		(1,142,711	)		(1,340,086	)
CMBX.NA.9	3.00		Monthly	Morgan Stanley & Co. International PLC	09/17/58	NR	USD	8,614		(2,263,070	)		(2,311,201	)		48,131
									$	(13,687,493	)	$	(7,057,518	)	$	(6,629,975	)

^(a)  Using the rating of the issuer or the underlying securities of the index, as applicable, provided by S&P Global Ratings.

^(b)  The maximum potential amount the Trust may pay should a negative credit event take place as defined under the terms of the agreement.

Fair Value Hierarchy as of Period End

Various inputs are used in determining the fair value of financial instruments. These inputs to valuation techniques are categorized into a fair value hierarchy consisting of three broad levels for financial reporting purposes as follows:

• Level 1 — Unadjusted price quotations in active markets/exchanges for identical assets or liabilities that the Trust has the ability to access

• Level 2 — Other observable inputs (including, but not limited to, quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market–corroborated inputs)

38

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

Fair Value Hierarchy as of Period End (continued)

• Level 3 — Unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the BlackRock Global Valuation Methodologies Committee’s (the “Global Valuation Committee’s”) assumptions used in determining the fair value of financial instruments)

The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Accordingly, the degree of judgment exercised in determining fair value is greatest for instruments categorized in Level 3. The inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the fair value hierarchy classification is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Investments classified within Level 3 have significant unobservable inputs used by the Global Valuation Committee in determining the price for Fair Valued Investments. Level 3 investments include equity or debt issued by privately held companies or funds. There may not be a secondary market, and/or there are a limited number of investors. The categorization of a value determined for financial instruments is based on the pricing transparency of the financial instruments and is not necessarily an indication of the risks associated with investing in those securities. For information about the Trust’s policy regarding valuation of financial instruments, refer to its most recent financial statements.

The following tables summarize the Trust’s investments and derivative financial instruments categorized in the disclosure hierarchy. The breakdown of the Trust’s investments into major categories is disclosed in the Schedule of Investments above.

	Level 1			Level 2			Level 3		Total
Assets
Investments
Long-Term Investments
Asset-Backed Securities	$	—		$	65,484,336		$	30,604	$	65,514,940
Common Stocks		—			—			21,047		21,047
Corporate Bonds		—			534,417,170			7,189,663		541,606,833
Floating Rate Loan Interests		—			17,091,997			435,460		17,527,457
Foreign Agency Obligations		—			30,669,126			—		30,669,126
Municipal Bonds		—			27,593,029			—		27,593,029
Non-Agency Mortgage-Backed Securities		—			40,522,067			—		40,522,067
Preferred Securities
Capital Trusts		—			63,048,940			—		63,048,940
Preferred Stocks
Banks		1,954,500			—			—		1,954,500
Capital Markets		4,260,193			—			—		4,260,193
Thrifts & Mortgage Finance		—			88,800			—		88,800
Trust Preferred		798,150			—			—		798,150
U.S. Government Sponsored Agency Securities		—			110,557,318			—		110,557,318
U.S. Treasury Obligations		—			237,831,152			—		237,831,152
Warrants		—			12,262			—		12,262
Short-Term Securities
Money Market Funds		27,250,039			—			—		27,250,039
Options Purchased
Credit Contracts		—			313,904			—		313,904
Interest Rate Contracts		406,625			6,539,956			—		6,946,581
	$	34,669,507		$	1,134,170,057		$	7,676,774	$	1,176,516,338
Derivative Financial Instruments(a)
Assets
Credit Contracts	$	—		$	221,104		$	—	$	221,104
Foreign Currency Exchange Contracts		—			453,822			—		453,822
Interest Rate Contracts		368,763			3,411,995			—		3,780,758
Liabilities
Credit Contracts		—			(6,702,748	)		—		(6,702,748	)
Foreign Currency Exchange Contracts		—			(308,878	)		—		(308,878	)
Interest Rate Contracts		(1,310,501	)		(12,519,147	)		—		(13,829,648	)
	$	(941,738	)	$	(15,443,852	)	$	—	$	(16,385,590	)

^(a) Derivative financial instruments are swaps, futures contracts, forward foreign currency exchange contracts and options written. Swaps, futures contracts and forward foreign currency exchange contracts are valued at the unrealized appreciation (depreciation) on the instrument and options written are shown at value.

The Trust may hold assets and/or liabilities in which the fair value approximates the carrying amount or face value, including accrued interest, for financial statement purposes. As of period end, reverse repurchase agreements of $293,723,851 are categorized as Level 2 within the disclosure hierarchy.

S C H E D U L E   O F   I N V E S  T M E N T S 39

Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Core Bond Trust (BHK)

A reconciliation of Level 3 financial instruments is presented when the Trust had a significant amount of Level 3 investments at the beginning and/or end of the period in relation to net assets. The following table is a reconciliation of Level 3 investments for which significant unobservable inputs were used in determining fair value:

	Asset-Backed Securities			Common Stocks		Corporate Bonds			Floating Rate Loan Interests			Total
Assets
Opening balance, as of December 31, 2019	$	1,640,060		$	—	$	8,618,085		$	845,594		$	11,103,739
Transfers into Level 3(a)		—			—		—			413,762			413,762
Transfers out of Level 3(b)		(1,500,000	)		—		—			(258,280	)		(1,758,280	)
Accrued discounts/premiums		(89,816	)		—		4,720			468			(84,628	)
Net realized gain (loss)		—			—		—			(28,654	)		(28,654	)
Net change in unrealized appreciation (depreciation)(c)		(19,640	)		13,822		(1,607,010	)		7,995			(1,604,833	)
Purchases		—			7,225		262,448			133,724			403,397
Sales		—			—		(88,580	)		(679,149	)		(767,729	)
Closing balance, as of September 30, 2020	$	30,604		$	21,047	$	7,189,663		$	435,460		$	7,676,774
Net change in unrealized appreciation (depreciation) on investments still held at September 30, 2020(c)	$	(19,639	)	$	13,823	$	(1,607,011	)	$	(8,467	)	$	(1,621,294	)

^(a)  As of December 31, 2019, the Trust used observable inputs in determining the value of certain investments. As of September 30, 2020, the Trust used significant unobservable inputs in determining the value of the same investments. As a result, investments at beginning of period value were transferred from Level 2 to Level 3 in the disclosure hierarchy.

^(b)  As of December 31, 2019, the Trust used significant unobservable inputs in determining the value of certain investments. As of September 30, 2020, the Trust used observable inputs in determining the value of the same investments. As a result, investments at beginning of period value were transferred from Level 3 to Level 2 in the disclosure hierarchy.

^(c)  Any difference between net change in unrealized appreciation (depreciation) and net change in unrealized appreciation (depreciation) on investments still held at September 30, 2020 is generally due to investments no longer held or categorized as Level 3 at period end.

Currency Abbreviation
AUD	Australian Dollar
EUR	Euro
GBP	British Pound
JPY	Japanese Yen
NOK	Norwegian Krone
NZD	New Zealand Dollar
USD	United States Dollar

Portfolio Abbreviation
ABS	Asset-Backed Security
AGM	Assured Guaranty Municipal Corp.
BAB	Build America Bond
CD	Certificate of Deposit
CLO	Collateralized Loan Obligation
CMT	Constant Maturity Treasury
DAC	Designated Activity Company
EURIBOR	Euro Interbank Offered Rate
GO	General Obligation Bonds
LIBOR	London Interbank Offered Rate
MSCI	Morgan Stanley Capital International
PCL	Public Company Limited
PIK	Payment-in-Kind
PJSC	Public Joint Stock Company
RB	Revenue Bond

Portfolio Abbreviation (continued)
SAB	Special Assessment Bonds

40