_NKX

Nuveen California AMT-Free Quality Municipal Income Fund

Portfolio of Investments    May 31, 2020

(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	LONG-TERM INVESTMENTS – 155.3% (99.3% of Total Investments)
	MUNICIPAL BONDS – 155.3% (99.3% of Total Investments)
	Consumer Staples  – 6.6% (4.2% of Total Investments)
	California County Tobacco Securitization Agency, Tobacco Settlement Asset-Backed Bonds, Los Angeles County Securitization Corporation, Series 2006A:
$6,350	5.600%, 6/01/36	6/20 at 100.00	B2	$6,353,302
325	5.650%, 6/01/41	6/20 at 100.00	B2	325,169
855	California Statewide Financing Authority, Tobacco Settlement Asset-Backed Bonds, Pooled Tobacco Securitization Program, Series 2002A, 5.625%, 5/01/29	6/20 at 100.00	Baa1	857,488
6,380	Golden State Tobacco Securitization Corporation, California, Tobacco Settlement Asset-Backed Bonds, Senior Convertible Series 2007A-2, 5.300%, 6/01/37	6/22 at 100.00	B-	6,459,559
24,735	Golden State Tobacco Securitization Corporation, California, Tobacco Settlement Asset-Backed Bonds, Series 2018A-1, 5.250%, 6/01/47	6/22 at 100.00	N/R	24,894,788
3,695	Golden State Tobacco Securitization Corporation, California, Tobacco Settlement Asset-Backed Bonds, Series 2018A-2, 5.000%, 6/01/47	6/22 at 100.00	N/R	3,697,993
8,450	Tobacco Securitization Authority of Northern California, Tobacco Settlement Asset-Backed Bonds, Series 2005A-1, 5.375%, 6/01/38	6/20 at 100.00	B-	8,450,422
50,790	Total Consumer Staples			51,038,721
	Education and Civic Organizations – 5.7% (3.6% of Total Investments)
1,050	ABAG Finance Authority for Non-Profit Corporations, California, Revenue Bonds, The Jackson Laboratory, Series 2012, 5.000%, 7/01/37	7/22 at 100.00	A1	1,113,493
3,000	California Educational Facilities Authority, Revenue Bonds, Pepperdine University, Series 2015, 5.000%, 9/01/40	9/25 at 100.00	AA	3,575,730
4,475	California Municipal Finance Authority Charter School Revenue Bonds, Albert Einstein Academies Project, Series 2013A, 7.125%, 8/01/43	8/23 at 100.00	BB	4,858,686
1,780	California Municipal Finance Authority, Charter School Revenue Bonds, Rocketship EducationMultiple Projects, Series 2014A, 7.250%, 6/01/43	6/22 at 102.00	N/R	1,920,015
1,600	California Municipal Finance Authority, Revenue Bonds, Goodwill Industries of Sacramento Valley & Northern Nevada Project, Series 2012A, 6.875%, 1/01/42, 144A	1/22 at 100.00	N/R	1,620,944
7,875	California Municipal Finance Authority, Revenue Bonds, Pomona College, Series 2017, 5.000%, 1/01/48	1/28 at 100.00	AAA	9,680,895
635	California School Finance Authority, School Facility Revenue Bonds, Alliance for College-Ready Public Schools Project, Series 2015A, 5.000%, 7/01/45, 144A	7/25 at 100.00	BBB	663,378
750	California School Finance Authority, School Facility Revenue Bonds, Alliance for College-Ready Public Schools Project, Series 2016A, 5.000%, 7/01/46, 144A	7/25 at 100.00	BBB	783,465
4,925	California School Finance Authority, School Facility Revenue Bonds, Alliance for College-Ready Public Schools Project, Series 2016C, 5.000%, 7/01/46	7/25 at 101.00	BBB	5,183,021
280	California School Finance Authority, School Facility Revenue Bonds, Value Schools, Series 2016A, 5.750%, 7/01/41, 144A	7/26 at 100.00	BB+	294,927
1,725	California State University, Systemwide Revenue Bonds, Series 2016A, 4.000%, 11/01/38	5/26 at 100.00	Aa2	1,940,884

1

NKX	Nuveen California AMT-Free Quality Municipal Income Fund (continued)
	Portfolio of Investments May 31, 2020
	(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Education and Civic Organizations (continued)
$175	California Statewide Communities Development Authority, Charter School Revenue Bonds, Rocketship 4 - Mosaic Elementary Charter School, Series 2011A, 8.500%, 12/01/41	12/21 at 100.00	N/R	$186,492
10,000	University of California, General Revenue Bonds, Series 2018AZ, 5.000%, 5/15/48	5/28 at 100.00	AA	12,334,600
38,270	Total Education and Civic Organizations			44,156,530
	Health Care – 15.8% (10.1% of Total Investments)
430	California Health Facilities Financing Authority, California, Revenue Bonds, Sutter Health, Refunding Series 2015A, 5.000%, 8/15/43	8/25 at 100.00	A+	487,603
	California Health Facilities Financing Authority, California, Revenue Bonds, Sutter Health, Refunding Series 2016B:
13,295	4.000%, 11/15/41	11/26 at 100.00	A+	14,389,444
5,000	5.000%, 11/15/46	11/26 at 100.00	A+	5,781,800
9,415	California Health Facilities Financing Authority, California, Revenue Bonds, Sutter Health, Refunding Series 2017A, 5.000%, 11/15/48	11/27 at 100.00	A+	10,799,288
	California Health Facilities Financing Authority, California, Revenue Bonds, Sutter Health, Series 2016A:
18,430	5.000%, 11/15/41	11/25 at 100.00	A+	21,062,173
7,500	5.000%, 11/15/46	11/25 at 100.00	A+	8,523,000
3,500	California Health Facilities Financing Authority, California, Revenue Bonds, Sutter Health, Series 2018A, 5.000%, 11/15/48	11/27 at 100.00	A+	4,014,605
1,255	California Health Facilities Financing Authority, Revenue Bonds, Children's Hospital Los Angeles, Series 2012A, 5.000%, 11/15/29	11/22 at 100.00	BBB+	1,346,213
1,000	California Health Facilities Financing Authority, Revenue Bonds, Children's Hospital Los Angeles, Series 2017A, 5.000%, 8/15/47	8/27 at 100.00	BBB+	1,106,160
1,000	California Health Facilities Financing Authority, Revenue Bonds, City of Hope National Medical Center, Series 2012A, 5.000%, 11/15/35	11/22 at 100.00	A+	1,072,350
10,000	California Health Facilities Financing Authority, Revenue Bonds, Kaiser Permanente System, Series 2017A-2, 4.000%, 11/01/44	11/27 at 100.00	AA-	10,999,600
2,520	California Health Facilities Financing Authority, Revenue Bonds, Lucile Salter Packard Children's Hospital, Series 2014A, 5.000%, 8/15/43	8/24 at 100.00	AA-	2,795,688
2,000	California Health Facilities Financing Authority, Revenue Bonds, Memorial Health Services, Series 2012A, 5.000%, 10/01/33	10/22 at 100.00	AA-	2,159,960
795	California Health Facilities Financing Authority, Revenue Bonds, Providence Health & Services, Refunding Series 2014A, 5.000%, 10/01/38	10/24 at 100.00	AA-	900,552
2,800	California Health Facilities Financing Authority, Revenue Bonds, Providence Health & Services, Series 2014B, 5.000%, 10/01/44	10/24 at 100.00	AA-	3,160,192
335	California Health Facilities Financing Authority, Revenue Bonds, Rady Children's Hospital - San Diego, Series 2011, 5.250%, 8/15/41	8/21 at 100.00	AA	350,125
250	California Municipal Finance Authority, Revenue Bonds, Eisenhower Medical Center, Refunding Series 2017A, 5.000%, 7/01/42	7/27 at 100.00	Baa2	279,245
1,690	California Municipal Finance Authority, Revenue Bonds, NorthBay Healthcare Group, Series 2017A, 5.250%, 11/01/36	11/26 at 100.00	BBB-	1,882,559

2

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Health Care (continued)
	California Statewide Communities Development Authority, California, Revenue Bonds, Loma Linda University Medical Center, Series 2014A:
$1,200	5.250%, 12/01/44	12/24 at 100.00	BB	$1,234,032
4,000	5.500%, 12/01/54	12/24 at 100.00	BB	4,108,720
14,740	California Statewide Communities Development Authority, California, Revenue Bonds, Loma Linda University Medical Center, Series 2016A, 5.250%, 12/01/56, 144A	6/26 at 100.00	BB	14,978,198
2,000	California Statewide Communities Development Authority, California, Revenue Bonds, Loma Linda University Medical Center, Series 2018A, 5.250%, 12/01/48, 144A	6/28 at 100.00	BB	2,037,780
	California Statewide Community Development Authority, Revenue Bonds, Daughters of Charity Health System, Series 2005A:
700	5.750%, 7/01/24 (4)	6/20 at 100.00	N/R	588,854
4,240	5.750%, 7/01/30 (4)	6/20 at 100.00	N/R	3,566,773
105	5.750%, 7/01/35 (4)	6/20 at 100.00	N/R	88,328
3,440	California Statewide Community Development Authority, Revenue Bonds, Sherman Oaks Health System, Series 1998A, 5.000%, 8/01/22  –  AMBAC Insured	No Opt. Call	AA-	3,516,265
850	San Buenaventura, California, Revenue Bonds, Community Memorial Health System, Series 2011, 7.500%, 12/01/41	12/21 at 100.00	BB	864,756
112,490	Total Health Care			122,094,263
	Housing/Multifamily – 3.1% (2.0% of Total Investments)
3,000	California Community Housing Agency, California, Essential Housing Revenue Bonds, Serenity at Larkspur Apartments, Series 2020A, 5.000%, 2/01/50, 144A	2/30 at 100.00	N/R	3,130,680
500	California Community Housing Agency, California, Essential Housing Revenue Bonds, Verdant at Green Valley Apartments, Series 2019A, 5.000%, 8/01/49, 144A	8/29 at 100.00	N/R	520,865
4,750	California Community Housing Agency, Workforce Housing Revenue Bonds, Annadel Apartments, Series 2019A, 5.000%, 4/01/49, 144A	4/29 at 100.00	N/R	4,942,280
8,095	California Housing Finance Agency, Municipal Certificate Revenue Bonds, Class A Series 2019-2, 4.000%, 3/20/33	No Opt. Call	BBB+	8,272,102
1,202	California Housing Finance Agency, Municipal Certificate Revenue Bonds, Class A Series2019-1, 4.250%, 1/15/35	No Opt. Call	BBB+	1,245,754
	California Municipal Finance Authority, Mobile Home Park Revenue Bonds, Caritas Affordable Housing Inc Projects, Senior Series 2014A:
260	5.250%, 8/15/39	8/24 at 100.00	BBB+	283,249
705	5.250%, 8/15/49	8/24 at 100.00	BBB+	761,661
155	California Municipal Finance Authority, Mobile Home Park Revenue Bonds, Caritas Projects Series 2012A, 5.500%, 8/15/47	8/22 at 100.00	BBB	162,121
350	California Municipal Finance Authority, Mobile Home Park Revenue Bonds, Caritas Projects Series 2012B, 7.250%, 8/15/47	8/22 at 100.00	N/R	373,118
140	California Public Finance Authority, University Housing Revenue Bonds, National Campus Community Development - Claremont Properties LLC Claremont Colleges Project, Series 2017A, 5.000%, 7/01/37, 144A	7/27 at 100.00	Caa2	105,000
3,285	Independent Cities Finance Authority, California, Mobile Home Park Revenue Bonds, Rancho Vallecitos Mobile Home Park, Series 2013, 5.000%, 4/15/38	4/23 at 100.00	A-	3,473,460

3

NKX	Nuveen California AMT-Free Quality Municipal Income Fund (continued)
	Portfolio of Investments May 31, 2020
	(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Housing/Multifamily (continued)
	La Verne, California, Mobile Home Park Revenue Bonds, Copacabana Mobile Home Park, Refunding Series 2014:
$670	5.000%, 6/15/44	6/24 at 100.00	A	$770,534
185	5.000%, 6/15/49	6/24 at 100.00	A	211,579
23,297	Total Housing/Multifamily			24,252,403
	Long-Term Care – 0.5% (0.3% of Total Investments)
2,250	California Health Facilities Financing Authority, Insured Revenue Bonds, Community Program for Persons with Developmental Disabilities, Series 2011A, 6.250%, 2/01/26	2/21 at 100.00	AA	2,341,350
1,300	California Health Facilities Financing Authority, Revenue Bonds, Northern California Presbyterian Homes & Services Inc, Refunding Series 2015, 5.000%, 7/01/39	7/25 at 100.00	AA	1,500,941
3,550	Total Long-Term Care			3,842,291
	Tax Obligation/General – 35.9% (23.0% of Total Investments)
1,000	California State, General Obligation Bonds, Refunding Series 2011, 5.250%, 9/01/25	9/21 at 100.00	Aa2	1,060,430
1,600	California State, General Obligation Bonds, Refunding Various Purpose Series 2016, 5.000%, 8/01/33	8/26 at 100.00	Aa2	1,965,808
	California State, General Obligation Bonds, Refunding Various Purpose Series 2019:
3,250	5.000%, 4/01/32	No Opt. Call	Aa2	4,566,802
15,000	5.000%, 11/01/39	11/28 at 100.00	Aa2	19,087,500
2,015	California State, General Obligation Bonds, Various Purpose Series 2010, 6.000%, 3/01/33	6/20 at 100.00	Aa2	2,023,604
	California State, General Obligation Bonds, Various Purpose Series 2011:
2,000	5.000%, 9/01/31	9/21 at 100.00	Aa2	2,114,120
4,090	5.000%, 9/01/41	9/21 at 100.00	Aa2	4,308,570
2,625	5.000%, 10/01/41	10/21 at 100.00	Aa2	2,774,887
	California State, General Obligation Bonds, Various Purpose Series 2013:
3,500	5.000%, 4/01/37	4/23 at 100.00	Aa2	3,870,615
2,000	5.000%, 2/01/43	2/23 at 100.00	Aa2	2,192,320
5,520	5.000%, 11/01/43	11/23 at 100.00	Aa2	6,196,752
	California State, General Obligation Bonds, Various Purpose Series 2014:
2,460	5.000%, 10/01/39	10/24 at 100.00	Aa2	2,843,243
9,000	5.000%, 12/01/43	12/23 at 100.00	Aa2	10,131,120
9,000	5.000%, 10/01/44	10/24 at 100.00	Aa2	10,282,590
8,000	California State, General Obligation Bonds, Various Purpose Series 2015, 5.000%, 3/01/45	3/25 at 100.00	Aa2	9,210,240
5,390	California State, General Obligation Bonds, Various Purpose Series 2016, 5.000%, 9/01/46	9/26 at 100.00	Aa2	6,460,831
7,995	California State, General Obligation Bonds, Various Purpose Series 2017, 5.000%, 11/01/47	11/27 at 100.00	Aa2	9,811,064
1,505	Chaffey Joint Union High School District, San Bernardino County, California, General Obligation Bonds, Election 2012 Series 2019D, 4.000%, 8/01/49	8/28 at 100.00	Aa1	1,726,747

4

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Tax Obligation/General (continued)
$20,750	Coachella Valley Unified School District, Riverside County, California, General Obligation Bonds, Election 2005 Series 2010C, 0.000%, 8/01/43  –  AGM Insured	No Opt. Call	AA	$11,846,175
9,840	Corona-Norco Unified School District, Riverside County, California, General Obligation Bonds, Election 2014, Series 2018B, 5.000%, 8/01/47	8/28 at 100.00	AAA	12,162,634
3,065	Lucia Mar Unified School District, San Luis Obispo County, California, General Obligation Bonds, Election 2016 Series 2017A, 4.000%, 8/01/46	8/27 at 100.00	Aa2	3,469,304
4,500	Mount Diablo Unified School District, Contra Costa County, California, General Obligation Bonds, Series 2010A, 0.000%, 8/01/30  –  AGM Insured (5)	8/25 at 100.00	AA	5,014,575
3,300	Mount San Jacinto Community College District, Riverside County, California, General Obligation Bonds, Election 2014, Series 2018B, 4.000%, 8/01/43	8/28 at 100.00	Aa1	3,815,064
1,125	San Diego Unified School District, San Diego County, California, General Obligation Bonds, Election of 1998, Series 1999A, 0.000%, 7/01/21  –  FGIC Insured	No Opt. Call	Aa2	1,120,725
11,980	San Diego Unified School District, San Diego County, California, General Obligation Bonds, Refunding Series 2012R-1, 0.000%, 7/01/31	No Opt. Call	Aa2	9,967,839
9,665	San Jose, California, General Obligation Bonds, Disaster Preparedness, Public Safety & Infrastructure, Series 2019A-1, 5.000%, 9/01/45	3/29 at 100.00	AA+	12,130,735
2,000	San Mateo County Community College District, California, General Obligation Bonds, Election 2014 Series 2018B, 5.000%, 9/01/45	9/28 at 100.00	AAA	2,479,760
2,670	San Mateo Union High School District, San Mateo County, California, General Obligation Bonds, Capital Appreciation, Election 2010, Refunding Series 2011A, 0.000%, 9/01/33 (5)	No Opt. Call	Aaa	2,649,735
2,870	Sanger Unified School District, Fresno County, California, General Obligation Bonds, Election 2012, Series 2014B, 5.000%, 8/01/39  –  AGM Insured	8/24 at 100.00	AA	3,311,148
	Sonoma County Junior College District, California, General Obligation Bonds, Election 2014 Series 2019B:
1,730	3.000%, 8/01/36	8/29 at 100.00	AA	1,893,243
2,110	3.000%, 8/01/41	8/29 at 100.00	AA	2,246,306
10,000	Southwestern Community College District, San Diego County, California, General Obligation Bonds, Election of 2008, Series 2011C, 0.000%, 8/01/41	No Opt. Call	Aa2	5,999,100
	Stockton Unified School District, San Joaquin County, California, General Obligation Bonds, Election 2008 Series 2011D:
23,280	0.000%, 8/01/47  –  AGC Insured (5)	8/37 at 100.00	AA	27,973,015
38,845	0.000%, 8/01/50  –  AGM Insured (5)	8/37 at 100.00	AA	46,629,150
15,780	Sylvan Union School District, Stanislaus County, California, General Obligation Bonds, Election of 2006, Series 2010, 0.000%, 8/01/49  –  AGM Insured (5)	No Opt. Call	AA	16,105,857
8,345	Yosemite Community College District, California, General Obligation Bonds, Capital Appreciation, Election 2004, Series 2010D, 0.000%, 8/01/42 (5)	No Opt. Call	Aa2	8,660,191
257,805	Total Tax Obligation/General			278,101,799
	Tax Obligation/Limited – 34.5% (22.1% of Total Investments)
655	Beaumont Financing Authority, California, Local Agency Revenue Bonds, Improvement Area 19C, Series 2013A, 5.000%, 9/01/27	9/23 at 100.00	N/R	716,170
1,000	Bell Community Redevelopment Agency, California, Tax Allocation Bonds, Bell Project Area, Series 2003, 5.625%, 10/01/33  –  RAAI Insured	6/20 at 100.00	AA	1,003,090

5

NKX	Nuveen California AMT-Free Quality Municipal Income Fund (continued)
	Portfolio of Investments May 31, 2020
	(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Tax Obligation/Limited (continued)
$6,700	Brea and Olinda Unified School District, Orange County, California, Certificates of Participation Refunding, Series 2002A, 5.125%, 8/01/26  –  AGM Insured	6/20 at 100.00	AA	$6,721,440
3,000	California Infrastructure and Economic Development Bank, Infrastructure State Revolving Fund Revenue Bonds, Series 2016A, 5.000%, 10/01/41	10/26 at 100.00	AAA	3,669,210
	California Infrastructure and Economic Development Bank, Revenue Bonds, North County Center for Self-Sufficiency Corporation, Series 2004:
1,535	5.000%, 12/01/20  –  AMBAC Insured	6/20 at 100.00	AA+	1,540,633
1,615	5.000%, 12/01/21  –  AMBAC Insured	6/20 at 100.00	AA+	1,620,863
1,695	5.000%, 12/01/22  –  AMBAC Insured	6/20 at 100.00	AA+	1,701,153
1,780	5.000%, 12/01/23  –  AMBAC Insured	6/20 at 100.00	AA+	1,786,461
1,865	5.000%, 12/01/24  –  AMBAC Insured	6/20 at 100.00	AA+	1,871,770
7,000	California State Public Works Board, Lease Revenue Bonds, Department of Corrections & Rehabilitation, Various Correctional Facilities Series 2013F, 5.250%, 9/01/31	9/23 at 100.00	Aa3	7,954,520
	California State Public Works Board, Lease Revenue Bonds, Department of Education, Riverside Campus Project, Series 2012H:
2,790	5.000%, 4/01/30	4/22 at 100.00	Aa3	3,010,633
2,065	5.000%, 4/01/31	4/22 at 100.00	Aa3	2,225,926
20,330	California State Public Works Board, Lease Revenue Bonds, Judicial Council of California, New Stockton Courthouse, Series 2014B, 5.000%, 10/01/39	10/24 at 100.00	Aa3	23,207,712
1,990	California State Public Works Board, Lease Revenue Bonds, Judicial Council of California, Various Projects Series 2013A, 5.000%, 3/01/33	3/23 at 100.00	Aa3	2,194,890
	Compton Community Redevelopment Agency, California, Tax Allocation Revenue Bonds, Redevelopment Projects, Second Lien Series 2010B:
1,230	5.000%, 8/01/25	8/20 at 100.00	N/R	1,236,556
530	5.750%, 8/01/26	8/20 at 100.00	N/R	533,302
	El Monte, California, Senior Lien Certificates of Participation, Department of Public Services Facility Phase II, Series 2001:
1,580	5.000%, 1/01/21  –  AMBAC Insured	6/20 at 100.00	Aa2	1,585,767
5,000	5.250%, 1/01/34  –  AMBAC Insured	6/20 at 100.00	Aa2	5,016,550
1,000	Fullerton Community Facilities District 1, California, Special Tax Bonds, Amerige Heights, Refunding Series 2012, 5.000%, 9/01/32	9/22 at 100.00	A+	1,094,560
45,825	Golden State Tobacco Securitization Corporation, California, Enhanced Tobacco Settlement Asset-Backed Revenue Bonds, Refunding Series 2015A, 5.000%, 6/01/45	6/25 at 100.00	Aa3	52,221,712
1,000	Golden State Tobacco Securitization Corporation, California, Enhanced Tobacco Settlement Asset-Backed Revenue Bonds, Series 2013A, 5.000%, 6/01/30	6/23 at 100.00	Aa3	1,109,400
	Government of Guam, Business Privilege Tax Bonds, Refunding Series 2015D:
7,610	5.000%, 11/15/30	11/25 at 100.00	BB	8,059,903
4,000	5.000%, 11/15/34	11/25 at 100.00	BB	4,207,840
960	Inglewood Redevelopment Agency, California, Tax Allocation Bonds, Merged Redevelopment Project, Refunding Series 1998A, 5.250%, 5/01/23  –  AMBAC Insured	No Opt. Call	N/R	1,036,262

6

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Tax Obligation/Limited (continued)
	Lake Elsinore Public Financing Authority, California, Local Agency Revenue Bonds, Canyon Hills Improvement Area D, Series 2014A:
$1,140	5.500%, 9/01/33	9/23 at 100.00	N/R	$1,239,260
2,105	5.750%, 9/01/44	9/23 at 100.00	N/R	2,263,149
1,110	Lake Elsinore Public Financing Authority, California, Local Agency Revenue Bonds, Refunding Series 2015, 5.000%, 9/01/40	9/25 at 100.00	N/R	1,207,403
2,000	Lammersville Joint Unified School District, California, Special Tax Bonds, Community Facilities District 2007-1 Mountain House - Shea Homes Improvement Area 1, Series 2013, 6.000%, 9/01/38	9/23 at 100.00	N/R	2,193,600
1,000	Lathrop, California, Limited Obligation Improvement Bonds, Crossroads Assessment District, Series 2015, 5.000%, 9/02/40	9/25 at 100.00	N/R	1,093,350
6,190	Los Angeles Community Redevelopment Agency, California, Lease Revenue Bonds, Vermont Manchester Social Services Project, Series 2005, 5.000%, 9/01/37  –  AMBAC Insured	6/20 at 100.00	Aa2	6,207,456
	Los Angeles County Metropolitan Transportation Authority, California, Proposition A First Tier Senior Sales Tax Revenue Bonds, Green Series 2017A:
7,860	5.000%, 7/01/39	7/27 at 100.00	AAA	9,673,616
7,140	5.000%, 7/01/41	7/27 at 100.00	AAA	8,751,070
3,220	Los Angeles County Metropolitan Transportation Authority, California, Proposition C Sales Tax Revenue Bonds, Senior Lien Series 2017A, 5.000%, 7/01/42	7/27 at 100.00	AAA	3,939,509
3,855	Los Angeles County Public Works Financing Authority, California, Lease Revenue Bonds, Series 2019E-1, 5.000%, 12/01/49	12/29 at 100.00	AA+	4,677,117
475	Lynwood Redevelopment Agency, California, Tax Allocation Revenue Bonds, Project Area A, Subordinate Lien Series 2011A, 7.250%, 9/01/38	9/21 at 100.00	A	503,324
	Patterson Public Finance Authority, California, Revenue Bonds, Community Facilities District 2001-1, Senior Series 2013A:
3,750	5.250%, 9/01/30	9/23 at 100.00	N/R	4,090,275
3,355	5.750%, 9/01/39	9/23 at 100.00	N/R	3,638,162
545	Patterson Public Finance Authority, California, Revenue Bonds, Community Facilities District 2001-1, Subordinate Lien Series 2013B, 5.875%, 9/01/39	9/23 at 100.00	N/R	592,562
1,960	Perris Joint Powers Authority, California, Local Agency Revenue Bonds, Community Facilities District 2001-1 May Farms Improvement Area 1,2 and 3, Refunding Series 2014A, 5.375%, 9/01/33	9/23 at 100.00	N/R	2,116,114
	Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Restructured 2018A-1:
298	4.500%, 7/01/34	7/25 at 100.00	N/R	301,424
303	4.550%, 7/01/40	7/28 at 100.00	N/R	300,352
20,088	5.000%, 7/01/58	7/28 at 100.00	N/R	20,153,487
12	Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Taxable Restructured COFINA Project Series 2019A-2, 4.536%, 7/01/53	7/28 at 100.00	N/R	11,288
40	Riverside County Redevelopment Agency, California, Tax Allocation Bonds, Jurupa Valley Project Area, Series 2011B, 6.500%, 10/01/25	10/21 at 100.00	A	43,274

7

NKX	Nuveen California AMT-Free Quality Municipal Income Fund (continued)
	Portfolio of Investments May 31, 2020
	(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Tax Obligation/Limited (continued)
	Riverside County, California, Special Tax Bonds, Community Facilities District 05-8 Scott Road, Series 2013:
$660	5.000%, 9/01/32	9/22 at 100.00	N/R	$693,970
1,775	5.000%, 9/01/42	9/22 at 100.00	N/R	1,847,651
400	Roseville, California, Special Tax Bonds, Community Facilities District 1 Westpark, Refunding Series 2015, 5.000%, 9/01/33	9/25 at 100.00	N/R	446,776
	Sacramento Area Flood Control Agency, California, Consolidated Capital Assessment District 2 Bonds, Series 2016A:
3,695	5.000%, 10/01/36	10/26 at 100.00	AA	4,554,605
8,290	5.000%, 10/01/41	10/26 at 100.00	AA	10,088,598
6,230	5.000%, 10/01/47	10/26 at 100.00	AA	7,535,497
280	Sacramento City Financing Authority, California, Lease Revenue Refunding Bonds, Series 1993A, 5.400%, 11/01/20  –  NPFG Insured	No Opt. Call	AA-	285,888
570	Sacramento City Financing Authority, California, Lease Revenue Refunding Bonds, Series 1993B, 5.400%, 11/01/20	No Opt. Call	AAA	581,987
330	San Bernardino Joint Powers Financing Authority, California, Certificates of Participation Refunding, Police Station Financing Project, Series 1999, 5.500%, 9/01/20  –  NPFG Insured	6/20 at 100.00	Baa2	331,333
215	San Clemente, California, Special Tax Revenue Bonds, Community Facilities District 2006-1 Marblehead Coastal, Series 2015, 5.000%, 9/01/40	9/25 at 100.00	N/R	235,171
1,480	San Diego Redevelopment Agency, California, Subordinate Lien Tax Increment and Parking Revenue Bonds, Centre City Project, Series 2003B, 5.250%, 9/01/26	6/20 at 100.00	AAA	1,485,550
3,000	San Francisco Bay Area Rapid Transit District, California, Sales Tax Revenue Bonds, Series 2019A, 3.000%, 7/01/44	7/27 at 100.00	AA+	3,135,300
645	San Francisco City and County Redevelopment Agency Successor Agency, California, Special Tax Bonds, Community Facilities District 7, Hunters Point Shipyard Phase One Improvements, Refunding Series 2014, 5.000%, 8/01/39	8/24 at 100.00	N/R	677,843
2,700	San Francisco City and County Redevelopment Financing Authority, California, Tax Allocation Revenue Bonds, San Francisco Redevelopment Projects, Series 1998D, 0.000%, 8/01/24  –  NPFG Insured	No Opt. Call	AA	2,627,613
380	San Francisco, California, Community Facilities District 6, Mission Bay South Public Improvements, Special Tax Refunding Bonds, Series 2013A, 5.000%, 8/01/33	8/22 at 100.00	N/R	399,243
5,150	San Jacinto Unified School District, Riverside County, California, Certificates of Participation, Series 2010, 5.375%, 9/01/40  –  AGC Insured	9/20 at 100.00	AA	5,215,972
995	San Marcos Public Financing Authority, California, Special Tax Revenue Bonds, Refunding Series 2012D, 5.000%, 9/01/36	9/22 at 100.00	N/R	1,040,133
50	Signal Hill Redevelopment Agency, California, Project 1 Tax Allocation Bonds, Series 2011, 7.000%, 10/01/26	4/21 at 100.00	N/R	52,134
3,600	Stockton Public Financing Authority, California, Revenue Bonds, Arch Road East Community Facility District 99-02, Series 2018A, 5.000%, 9/01/33	9/25 at 103.00	N/R	3,994,416
	Temecula Public Financing Authority, California, Special Tax Bonds, Community Facilities District 16-01, Series 2017:
2,170	6.125%, 9/01/37, 144A	9/27 at 100.00	N/R	2,267,867
1,000	6.250%, 9/01/47, 144A	9/27 at 100.00	N/R	1,038,170

8

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Tax Obligation/Limited (continued)
$4,500	Virgin Islands Public Finance Authority, Gross Receipts Taxes Loan Note, Refunding Series 2012A, 5.000%, 10/01/32  –  AGM Insured	10/22 at 100.00	AA	$4,878,585
	West Patterson Financing Authority, California, Special Tax Bonds, Community Facilities District 2015-1 Arambel-KDN, Refunding Series 2015:
350	5.250%, 9/01/35	9/25 at 100.00	N/R	372,358
790	5.250%, 9/01/45	9/25 at 100.00	N/R	830,922
4,185	West Sacramento Financing Authority, California, Special Tax Revenue Bonds, Series 2014, 5.500%, 9/01/31	9/22 at 102.00	N/R	4,542,106
242,641	Total Tax Obligation/Limited			267,481,803
	Transportation – 12.9% (8.2% of Total Investments)
9,005	Alameda Corridor Transportation Authority, California, Revenue Bonds, Refunding Second Subordinate Lien Series 2016B, 5.000%, 10/01/36	10/26 at 100.00	BBB+	9,749,713
6,750	Foothill/Eastern Transportation Corridor Agency, California, Toll Road Revenue Bonds, Refunding Junior Lien Series 2013C, 6.500%, 1/15/43	1/24 at 100.00	BBB+	7,623,517
14,885	Foothill/Eastern Transportation Corridor Agency, California, Toll Road Revenue Bonds, Refunding Series 2013A, 5.750%, 1/15/46	1/24 at 100.00	A-	16,457,600
	Los Angeles Department of Airports, California, Revenue Bonds, Los Angeles International Airport, Senior Lien Series 2015E:
150	5.000%, 5/15/31	5/25 at 100.00	AA	174,833
1,270	5.000%, 5/15/34	5/25 at 100.00	AA	1,474,318
1,345	5.000%, 5/15/36	5/25 at 100.00	AA	1,554,443
4,000	Los Angeles Department of Airports, California, Revenue Bonds, Los Angeles International Airport, Subordinate Lien Series 2017B, 5.000%, 5/15/42	5/27 at 100.00	AA-	4,752,360
49,185	San Francisco Airports Commission, California, Revenue Bonds, San Francisco International Airport, Governmental Purpose Second Series 2017B, 5.000%, 5/01/47	5/27 at 100.00	A+	57,609,899
86,590	Total Transportation			99,396,683
	U.S. Guaranteed – 10.9% (7.0% of Total Investments) (6)
2,545	Antelope Valley Healthcare District, California, Revenue Bonds, Series 2011A, 6.875%, 3/01/26 (Pre-refunded 3/01/21)	3/21 at 100.00	N/R	2,669,196
1,115	Bay Area Toll Authority, California, Revenue Bonds, San Francisco Bay Area Toll Bridge, Series 2013S-4, 5.250%, 4/01/48 (Pre-refunded 4/01/23)	4/23 at 100.00	AA-	1,273,854
1,630	California Health Facilities Financing Authority, Revenue Bonds, Childrens Hospital Los Angeles, Series 2010A, 5.250%, 7/01/38 (Pre-refunded 7/01/20)  –  AGC Insured	7/20 at 100.00	AA	1,636,504
610	California Health Facilities Financing Authority, Revenue Bonds, Providence Health & Services, Refunding Series 2014A, 5.000%, 10/01/38 (Pre-refunded 10/01/24)	10/24 at 100.00	N/R	734,721
	California Infrastructure and Economic Development Bank, First Lien Revenue Bonds, San Francisco Bay Area Toll Bridge, Series 2003A:
3,000	5.000%, 7/01/22  –  AGM Insured (ETM)	No Opt. Call	Aaa	3,288,930
2,250	5.000%, 7/01/36 (Pre-refunded 1/01/28)  –  AMBAC Insured	1/28 at 100.00	AA+	2,932,177
460	California Municipal Finance Authority, Mobile Home Park Revenue Bonds, Caritas Projects Series 2010A, 6.400%, 8/15/45 (Pre-refunded 8/15/20)	8/20 at 100.00	N/R	465,768

9

NKX	Nuveen California AMT-Free Quality Municipal Income Fund (continued)
	Portfolio of Investments May 31, 2020
	(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	U.S. Guaranteed (6) (continued)
	California Municipal Finance Authority, Mobile Home Park Revenue Bonds, Windsor Mobile Country Club Series 2013A:
$2,000	5.625%, 11/15/33 (Pre-refunded 11/15/23)	11/23 at 100.00	N/R	$2,361,760
8,000	6.000%, 11/15/48 (Pre-refunded 11/15/23)	11/23 at 100.00	N/R	9,537,680
750	California Municipal Finance Authority, Revenue Bonds, Eisenhower Medical Center, Series 2010A, 5.750%, 7/01/40 (Pre-refunded 7/01/20)	7/20 at 100.00	Baa2	753,420
300	California Statewide Communities Development Authority, School Facility Revenue Bonds, Alliance College-Ready Public Schools, Series 2011A, 7.000%, 7/01/46 (Pre-refunded 7/01/21)	7/21 at 100.00	B+	321,600
3,000	Escondido Joint Powers Financing Authority, California, Revenue Bonds, Water System Financing, Series 2012, 5.000%, 9/01/41 (Pre-refunded 3/01/22)	3/22 at 100.00	AA-	3,248,280
14,885	Foothill/Eastern Transportation Corridor Agency, California, Toll Road Revenue Bonds, Refunding Series 2013A, 6.000%, 1/15/53 (Pre-refunded 1/15/24)	1/24 at 100.00	A-	17,942,974
	Marysville, California, Revenue Bonds, Fremont-Rideout Health Group, Series 2011:
25	5.250%, 1/01/23 (Pre-refunded 1/01/21)	1/21 at 100.00	N/R	25,731
25	4.500%, 1/01/26 (Pre-refunded 1/01/21)	1/21 at 100.00	N/R	25,622
75	5.000%, 1/01/29 (Pre-refunded 1/01/21)	1/21 at 100.00	N/R	77,084
275	5.000%, 1/01/30 (Pre-refunded 1/01/21)	1/21 at 100.00	N/R	282,639
525	5.000%, 1/01/31 (Pre-refunded 1/01/21)	1/21 at 100.00	N/R	539,584
810	5.125%, 1/01/32 (Pre-refunded 1/01/21)	1/21 at 100.00	N/R	833,085
3,750	5.250%, 1/01/42 (Pre-refunded 1/01/21)	1/21 at 100.00	N/R	3,859,612
170	National City Community Development Commission, California, Tax Allocation Bonds, National City Redevelopment Project, Series 2011, 6.500%, 8/01/24 (Pre-refunded 8/01/21)	8/21 at 100.00	A	182,412
65	Novato Redevelopment Agency, California, Tax Allocation Bonds, Hamilton Field Redevelopment Project, Series 2011, 6.750%, 9/01/40 (Pre-refunded 9/01/21)	9/21 at 100.00	A-	70,275
	Palomar Pomerado Health Care District, California, Certificates of Participation, Series 2010:
1,500	6.000%, 11/01/30 (Pre-refunded 11/01/20)	11/20 at 100.00	Ba1	1,534,635
2,595	6.000%, 11/01/41 (Pre-refunded 11/01/20)	11/20 at 100.00	Ba1	2,654,919
210	Rancho Santa Fe CSD Financing Authority, California, Revenue Bonds, Superior Lien Series 2011A, 5.750%, 9/01/30 (Pre-refunded 9/01/21)	9/21 at 100.00	A-	224,484
1,115	Rio Elementary School District, California, Special Tax Bonds, Community Facilities District 1, Series 2013, 5.500%, 9/01/39 (Pre-refunded 9/01/23)	9/23 at 100.00	N/R	1,300,235
1,000	San Diego County Regional Transportation Commission, California, Sales Tax Revenue Bonds, Refunding Series 2012A, 5.000%, 4/01/42 (Pre-refunded 4/01/22)	4/22 at 100.00	AAA	1,085,730
30	San Francisco Redevelopment Finance Authority, California, Tax Allocation Revenue Bonds, Mission Bay North Redevelopment Project, Series 2011C, 6.750%, 8/01/41 (Pre-refunded 2/01/21)	2/21 at 100.00	A-	31,286
	San Francisco Redevelopment Financing Authority, California, Tax Allocation Revenue Bonds, Mission Bay South Redevelopment Project, Series 2011D:
30	7.000%, 8/01/33 (Pre-refunded 2/01/21)	2/21 at 100.00	BBB+	31,297
40	7.000%, 8/01/41 (Pre-refunded 2/01/21)	2/21 at 100.00	BBB+	41,729

10

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	U.S. Guaranteed (6) (continued)
	San Ysidro School District, San Diego County, California, General Obligation Bonds, 1997 Election Series 2011F:
$7,230	0.000%, 8/01/42 (Pre-refunded 8/01/21)  –  AGM Insured	8/21 at 21.00	AA	$1,511,215
10,450	0.000%, 8/01/43 (Pre-refunded 8/01/21)  –  AGM Insured	8/21 at 19.43	AA	2,021,657
21,225	0.000%, 8/01/44 (Pre-refunded 8/01/21)  –  AGM Insured	8/21 at 17.98	AA	3,799,699
12,550	0.000%, 8/01/45 (Pre-refunded 8/01/21)  –  AGM Insured	8/21 at 16.64	AA	2,078,531
23,425	0.000%, 8/01/46 (Pre-refunded 8/01/21)  –  AGM Insured	8/21 at 15.39	AA	3,588,710
	Tustin Community Redevelopment Agency, California, Tax Allocation Housing Bonds Series 2010:
1,205	5.000%, 9/01/30 (Pre-refunded 9/01/20)  –  AGM Insured	9/20 at 100.00	AA	1,219,472
3,250	5.250%, 9/01/39 (Pre-refunded 9/01/20)  –  AGM Insured	9/20 at 100.00	AA	3,291,015
5,000	Walnut Valley Unified School District, Los Angeles County, California, General Obligation Bonds, Election 2007 Measure S, Series 2014C, 5.000%, 8/01/39 (Pre-refunded 8/01/24)	8/24 at 100.00	Aa1	5,983,150
95	Yorba Linda Redevelopment Agency, Orange County, California, Tax Allocation Revenue Bonds, Yorba Linda Redevelopment Project, Subordinate Lien Series 2011A, 6.000%, 9/01/26 (Pre-refunded 9/01/21)	9/21 at 100.00	N/R	101,823
1,000	Yuba Community College District, California, General Obligation Bonds, Election 2006 Series 2011C, 5.250%, 8/01/47 (Pre-refunded 8/01/21)	8/21 at 100.00	Aa2	1,059,770
138,215	Total U.S. Guaranteed			84,622,265
	Utilities – 8.7% (5.6% of Total Investments)
	Long Beach Bond Finance Authority, California, Natural Gas Purchase Revenue Bonds, Series 2007A:
2,490	5.000%, 11/15/35	No Opt. Call	A+	3,293,722
1,835	5.500%, 11/15/37	No Opt. Call	A+	2,592,763
10,000	Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Series 2012B, 5.000%, 7/01/43	7/22 at 100.00	Aa2	10,800,400
4,280	Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Series 2013B, 5.000%, 7/01/28	7/23 at 100.00	Aa2	4,876,375
5,000	Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Series 2016A, 5.000%, 7/01/46	1/26 at 100.00	Aa2	5,917,000
6,015	Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Series 2017A, 5.000%, 7/01/42	1/27 at 100.00	Aa2	7,294,270
16,400	Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Series 2017C, 5.000%, 7/01/47	7/27 at 100.00	Aa2	20,011,280
3,490	Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Series 2019C, 5.000%, 7/01/49	7/29 at 100.00	AA-	4,414,780
3,750	Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Tender Option Bond Trust 2015-XF2047, 17.492%, 7/01/43, 144A (IF) (7)	7/22 at 100.00	Aa2	4,950,638
2,975	Southern California Public Power Authority, California, Revenue Bonds, Apex Power Project Series 2014A, 5.000%, 7/01/37	7/24 at 100.00	AA-	3,446,270
56,235	Total Utilities			67,597,498

11

NKX	Nuveen California AMT-Free Quality Municipal Income Fund (continued)
	Portfolio of Investments May 31, 2020
	(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Water and Sewer – 20.7% (13.2% of Total Investments)
$7,600	Bay Area Water Supply and Conservation Agency, California, Revenue Bonds, Capital Cost Recovery Prepayment Program, Series 2013A, 5.000%, 10/01/34	4/23 at 100.00	AA-	$8,526,896
5,850	California Infrastructure and Economic Development Bank Clean Water State Revolving Fund Revenue Bonds, Green Series 2018, 5.000%, 10/01/43	4/28 at 100.00	AAA	7,317,824
3,675	California Pollution Control Financing Authority, Water Furnishing Revenue Bonds, San Diego County Water Authority Desalination Project Pipeline, Refunding Series 2019, 5.000%, 7/01/39, 144A	1/29 at 100.00	BBB	4,063,227
3,775	Los Angeles Department of Water and Power, California, Waterworks Revenue Bonds, Refunding Series 2016B, 5.000%, 7/01/35	1/26 at 100.00	AA+	4,582,057
16,000	Los Angeles Department of Water and Power, California, Waterworks Revenue Bonds, Series 2012A, 5.000%, 7/01/43	7/22 at 100.00	AA+	17,294,400
10,515	Los Angeles Department of Water and Power, California, Waterworks Revenue Bonds, Series 2014A, 5.000%, 7/01/44	7/24 at 100.00	AA+	12,130,630
	Los Angeles Department of Water and Power, California, Waterworks Revenue Bonds, Series 2016A:
5,680	5.000%, 7/01/35	1/26 at 100.00	AA+	6,894,327
1,000	5.000%, 7/01/36	1/26 at 100.00	AA+	1,208,960
	Los Angeles Department of Water and Power, California, Waterworks Revenue Bonds, Series 2017A:
9,455	5.000%, 7/01/44	1/27 at 100.00	AA+	11,451,423
5,000	5.250%, 7/01/44	1/27 at 100.00	AA+	6,140,500
2,210	Los Angeles, California, Wastewater System Revenue Bonds, Green Subordinate Lien Series 2017A, 5.250%, 6/01/47	6/27 at 100.00	AA	2,717,991
5,000	Los Angeles, California, Wastewater System Revenue Bonds, Green Subordinate Series 2018A, 5.000%, 6/01/48	6/28 at 100.00	AA	6,173,100
9,500	Los Angeles, California, Wastewater System Revenue Bonds, Refunding Green Series 2015A, 5.000%, 6/01/44	6/25 at 100.00	AA+	11,204,680
	Los Angeles, California, Wastewater System Revenue Bonds, Refunding Subordinate Lien Series 2013A:
2,000	5.000%, 6/01/34	6/23 at 100.00	AA	2,248,600
3,500	5.000%, 6/01/35	6/23 at 100.00	AA	3,930,605
1,000	New York State Environmental Facilities Corporation, State Clean Water and Drinking Water Revolving Funds Revenue Bonds, New York City Municipal Water Finance Authority Projects-Second Resolution Bonds,, 5.000%, 6/15/48	6/28 at 100.00	AAA	1,230,580
1,500	Placerville Public Financing Authority, California, Wastewater System Refinancing and Improvement Project Revenue Bonds, Series 2006, 5.000%, 9/01/34  –  SYNCORA GTY Insured	6/20 at 100.00	N/R	1,502,190
1,070	Puerto Rico Aqueduct and Sewerage Authority, Revenue Bonds, Senior Lien Series 2008A, 6.000%, 7/01/44	6/20 at 100.00	CC	1,086,050
	Puerto Rico Aqueduct and Sewerage Authority, Revenue Bonds, Senior Lien Series 2012A:
580	5.500%, 7/01/28	7/22 at 100.00	CC	601,750
2,140	5.750%, 7/01/37	7/22 at 100.00	CC	2,172,100
1,750	6.000%, 7/01/47	7/22 at 100.00	CC	1,780,625

12

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Water and Sewer (continued)
$4,500	Rancho California Water District Financing Authority, California, Revenue Bonds, Refunding Series 2019A, 3.000%, 8/01/40	2/30 at 100.00	AAA	$4,861,890
2,500	Sacramento County Sanitation Districts Financing Authority, California, Revenue Bonds, Sacramento Regional County Sanitation District, Series 2014A, 5.000%, 12/01/33	6/24 at 100.00	AA	2,892,150
4,000	San Diego Public Facilities Financing Authority, California, Water Utility Revenue Bonds, Refunding Subordinate Lien Series 2016B, 5.000%, 8/01/37	8/26 at 100.00	Aa3	4,902,520
26,220	San Francisco City and County Public Utilities Commission, California, Water Revenue Bonds, Refunding Green Series 2017D, 5.000%, 11/01/33 (UB) (7)	11/27 at 100.00	Aa2	33,229,655
136,020	Total Water and Sewer			160,144,730
$1,145,903	Total Long-Term Investments (cost $1,061,022,388)			1,202,728,986

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	SHORT-TERM INVESTMENTS – 1.0% (0.7% of Total Investments)
	MUNICIPAL BONDS – 1.0% (0.7% of Total Investments)
	Tax Obligation/Limited – 1.0% (0.7% of Total Investments)
$8,000	River Islands Public Financing Authority, California, Special Tax Bonds, Community Facilities District 2015-1, Variable Rate Demand Obligations, Tender Option Bond Trust 2019-MIZ9002, 0.290%, 3/01/21 (Mandatory Put 7/16/20), 144A (8)	8/20 at 101.00	VMIG-1	$8,000,000
$8,000	Total Short-Term Investments (cost $8,000,000)			8,000,000
	Total Investments (cost $1,069,022,388) – 156.3%			1,210,728,986
	Floating Rate Obligations – (2.7)%			(20,975,000)
	MuniFund Preferred Shares, net of deferred offering costs – (18.1)% (9)			(139,982,755)
	Variable Rate Demand Preferred Shares, net of deferred offering costs – (37.5)% (10)			(290,445,562)
	Other Assets Less Liabilities – 2.0%			15,356,408
	Net Asset Applicable to Common Shares – 100%			$774,682,077

Part F of Form N-PORT was prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) and in conformity with the applicable rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) related to interim filings. Part F of Form N-PORT does not include all information and footnotes required by U.S. GAAP for complete financial statements. Certain footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted from this report pursuant to the rules of the SEC. For a full set of the Fund’s notes to financial statements, please refer to the Fund’s most recently filed annual or semi-annual report.

Fair Value Measurements

The Fund's investments in securities are recorded at their estimated fair value. Fair value is defined as the price that would be received upon selling an investment or transferring a liability in an orderly transaction to an independent buyer in the principal or most advantageous market for the investment. A three-tier hierarchy is used to maximize the use of observable market data and minimize the use of unobservable inputs and to establish classification of fair value measurements for disclosure purposes. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability. Observable inputs are based on market data obtained from sources independent of the reporting entity. Unobservable inputs reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability. Unobservable inputs are based on the best information available in the circumstances. The following is a summary of the three-tiered hierarchy of valuation input levels.

Level 1  –     Inputs are unadjusted and prices are determined using quoted prices in active markets for identical securities.

13

NKX	Nuveen California AMT-Free Quality Municipal Income Fund (continued)
	Portfolio of Investments May 31, 2020
	(Unaudited)

Level 2  –     Prices are determined using other significant observable inputs (including quoted prices for similar securities, interest rates, credit spreads, etc.).

Level 3  –     Prices are determined using significant unobservable inputs (including management’s assumptions in determining the fair value of investments).

The inputs or methodologies used for valuing securities are not an indication of the risks associated with investing in those securities. The following is a summary of the Fund’s fair value measurements as of the end of the reporting period:

	Level 1	Level 2	Level 3	Total
Long-Term Investments:
Municipal Bonds	$ —	$1,198,485,031	$4,243,955	$1,202,728,986
Short-Term Investments:
Municipal Bonds	—	8,000,000	—	8,000,000
Total	$ —	$1,206,485,031	$4,243,955	$1,210,728,986

(1)	All percentages shown in the Portfolio of Investments are based on net assets applicable to common shares unless otherwise noted.
(2)	Optional Call Provisions: Dates (month and year) and prices of the earliest optional call or redemption. There may be other call provisions at varying prices at later dates. Certain mortgage-backed securities may be subject to periodic principal paydowns.
(3)	For financial reporting purposes, the ratings disclosed are the highest of Standard & Poor’s Group (“Standard & Poor’s”), Moody’s Investors Service, Inc. (“Moody’s”) or Fitch, Inc. (“Fitch”) rating. This treatment of split-rated securities may differ from that used for other purposes, such as for Fund investment policies. Ratings below BBB by Standard & Poor’s, Baa by Moody’s or BBB by Fitch are considered to be below investment grade. Holdings designated N/R are not rated by any of these national rating agencies.
(4)	Investment valued at fair value using methods determined in good faith by, or at the discretion of, the Board. For fair value measurement disclosure purposes, investment classified as Level 3.
(5)	Step-up coupon bond, a bond with a coupon that increases ("steps up"), usually at regular intervals, while the bond is outstanding. The rate shown is the coupon as of the end of the reporting period.
(6)	Backed by an escrow or trust containing sufficient U.S. Government or U.S. Government agency securities, which ensure the timely payment of principal and interest.
(7)	Investment, or portion of investment, has been pledged to collateralize the net payment obligations for investments in inverse floating rate transactions.
(8)	Investment has a maturity of greater than one year, but has variable rate and/or demand features which qualify it as a short-term investment. The rate disclosed, as well as the reference rate and spread, where applicable, is that in effect as of the end of the reporting period. This rate changes periodically based on market conditions or a specified market index.
(9)	MuniFund Preferred Shares, net of deferred offering costs as a percentage of Total Investments is 11.6%.
(10)	Variable Rate Demand Preferred Shares, net of deferred offering costs as a percentage of Total Investments is 24.0%.
144A	Investment is exempt from registration under Rule 144A of the Securities Act of 1933, as amended. These investments may only be resold in transactions exempt from registration, which are normally those transactions with qualified institutional buyers.
ETM	Escrowed to maturity
IF	Inverse floating rate security issued by a tender option bond (“TOB”) trust, the interest rate on which varies inversely with the Securities Industry Financial Markets Association (SIFMA) short-term rate, which resets weekly, or a similar short-term rate, and is reduced by the expenses related to the TOB trust.
UB	Underlying bond of an inverse floating rate trust reflected as a financing transaction.

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