Lord Abbett
Quarterly Portfolio Holdings Report

Lord Abbett
Alpha Strategy Fund
Durable Growth Fund
Focused Growth Fund
Focused Large Cap Value Fund
Focused Small Cap Value Fund
Fundamental Equity Fund
Global Equity Research Fund
Growth Leaders Fund
Health Care Fund
International Equity Fund
International Opportunities Fund
International Value Fund
Micro Cap Growth Fund
Value Opportunities Fund

For the period ended January 31, 2021

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – ALPHA STRATEGY FUND January 31, 2021

Investments	Shares		Fair Value (000)
INVESTMENTS IN UNDERLYING FUNDS(a)(b) 99.99%
Lord Abbett Developing Growth Fund, Inc. - Class I*(c)		4,109,788	$	167,022
Lord Abbett Securities Trust - Focused Small Cap Value Fund - Class I(d)		3,022,501		82,393
Lord Abbett Securities Trust - International Opportunities Fund - Class I(d)		8,091,863		157,872
Lord Abbett Securities Trust - Micro-Cap Growth Fund - Class I*(d)		3,660,155		86,563
Lord Abbett Research Fund, Inc. - Small Cap Value Fund - Class I(d)		8,534,423		163,605
Lord Abbett Securities Trust - Value Opportunities Fund - Class I*(d)		7,882,711		158,285
Total Investments in Underlying Funds (cost $717,087,662)				815,740

Investments	Principal Amount (000)		Fair Value (000)
SHORT-TERM INVESTMENT 0.09%
Repurchase Agreement
Repurchase Agreement dated 1/29/2021, 0.00% due 2/1/2021 with Fixed Income Clearing Corp. collateralized by $731,200 of U.S. Treasury Note at 0.25% due 6/15/2023; value: $733,140; proceeds: $718,704 (cost $718,704)		$719	$	719
Total Investments in Securities 100.08% (cost $717,806,366)				816,459
Liabilities in Excess of Other Assets (0.08)%				(664	)
Net Assets 100.00%			$	815,795

*	Non-income producing security.
(a)	Affiliated issuer.
(b)	These investments offer daily redemptions.
(c)	Fund investment objective is long-term growth of capital through a diversified and actively managed portfolio consisting of developing growth companies, many of which are traded over the counter.
(d)	Fund investment objective is long-term capital appreciation.

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund’s investments carried at fair value⁽¹⁾:

Investment Type(2)	Level 1 (000)		Level 2 (000)		Level 3 (000)		Total (000)
Investments in Underlying Funds	$	815,740	$	–	$	–	$	815,740
Short-Term Investment
Repurchase Agreement		–		719		–		719
Total	$	815,740	$	719	$	–	$	816,459

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each investment in Underlying Funds.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund’s net assets.

See Notes to Schedule of Investments. 1

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – DURABLE GROWTH FUND January 31, 2021

Investments	Shares		Fair Value (000)
COMMON STOCKS 99.23%
Aerospace & Defense 0.60%
CAE, Inc. (Canada)(a)		38,607	$	871
Automobiles 1.63%
Tesla, Inc.*		2,978		2,363
Banks 0.84%
First Republic Bank		8,383		1,215
Beverages 1.74%
Brown-Forman Corp. Class B		10,037		719
Coca-Cola Co. (The)		37,273		1,795
Total				2,514
Biotechnology 1.97%
Amgen, Inc.		4,749		1,147
Seagen, Inc.*		4,214		692
Vertex Pharmaceuticals, Inc.*		4,412		1,011
Total				2,850
Capital Markets 0.67%
Moody’s Corp.		3,652		972
Chemicals 0.70%
Air Products & Chemicals, Inc.		3,775		1,007
Construction Materials 0.85%
Vulcan Materials Co.		8,277		1,234
Containers & Packaging 1.03%
Avery Dennison Corp.		4,940		745
Ball Corp.		8,446		744
Total				1,489
Entertainment 3.26%
Activision Blizzard, Inc.		11,748		1,069
Netflix, Inc.*		4,933		2,626
Walt Disney Co. (The)*		6,028		1,014
Total				4,709
Equity Real Estate Investment Trusts 1.48%
SBA Communications Corp.		7,941		2,134

Investments	Shares		Fair Value (000)
Food & Staples Retailing 0.81%
Walmart, Inc.		8,327	$	1,170
Health Care Equipment & Supplies 5.39%
Align Technology, Inc.*		2,904		1,526
Boston Scientific Corp.*		20,736		735
Danaher Corp.		7,380		1,755
DexCom, Inc.*		3,136		1,176
Intuitive Surgical, Inc.*		2,049		1,532
West Pharmaceutical Services, Inc.		3,547		1,062
Total				7,786
Health Care Providers & Services 0.30%
Guardant Health, Inc.*		2,763		430
Health Care Technology 0.30%
Veeva Systems, Inc. Class A*		1,574		435
Hotels, Restaurants & Leisure 1.52%
Airbnb, Inc. Class A*		1,941		356
Chipotle Mexican Grill, Inc.*		1,061		1,570
Hilton Worldwide Holdings, Inc.		2,699		274
Total				2,200
Household Products 0.32%
Church & Dwight Co., Inc.		5,473		462
Industrial Conglomerates 1.42%
Honeywell International, Inc.		5,661		1,106
Roper Technologies, Inc.		2,410		947
Total				2,053
Information Technology Services 9.35%
Fidelity National Information Services, Inc.		10,857		1,340
Genpact Ltd.		26,697		1,022
Global Payments, Inc.		5,443		961
Mastercard, Inc. Class A		11,121		3,518
PayPal Holdings, Inc.*		15,092		3,536
Twilio, Inc. Class A*		3,759		1,351
Visa, Inc. Class A		9,220		1,782
Total				13,510

2 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – DURABLE GROWTH FUND January 31, 2021

Investments	Shares		Fair Value (000)
Insurance 0.43%
RenaissanceRe Holdings Ltd.		4,147	$	624
Interactive Media & Services 10.07%
Alphabet, Inc. Class A*		3,933		7,187
Facebook, Inc. Class A*		23,422		6,050
Match Group, Inc.*		9,379		1,312
Total				14,549
Internet & Direct Marketing Retail 8.43%
Amazon.com, Inc.*		3,802		12,190
Leisure Products 0.45%
Peloton Interactive, Inc. Class A*		4,453		651
Life Sciences Tools & Services 1.37%
10X Genomics, Inc. Class A*		5,655		968
Repligen Corp.*		5,035		1,007
Total				1,975
Machinery 0.79%
Stanley Black & Decker, Inc.		6,603		1,146
Multi-Line Retail 0.72%
Dollar Tree, Inc.*		10,310		1,048
Personal Products 0.86%
Estee Lauder Cos., Inc. (The) Class A		5,267		1,246
Pharmaceuticals 4.23%
AstraZeneca plc ADR		16,678		844
Bristol-Myers Squibb Co.		19,617		1,205
Eli Lilly and Co.		10,500		2,184
Zoetis, Inc.		12,188		1,880
Total				6,113
Professional Services 0.52%
CoStar Group, Inc.*		838		754

Investments	Shares		Fair Value (000)
Road & Rail 2.40%
J.B. Hunt Transport Services, Inc.		8,854	$	1,192
Norfolk Southern Corp.		4,695		1,111
Old Dominion Freight Line, Inc.		6,006		1,165
Total				3,468
Semiconductors & Semiconductor Equipment 7.48%
Analog Devices, Inc.		10,744		1,583
Lam Research Corp.		2,705		1,309
NVIDIA Corp.		5,767		2,996
NXP Semiconductors NV (Netherlands)(a)		6,163		989
QUALCOMM, Inc.		19,892		3,109
Xilinx, Inc.		6,284		821
Total				10,807
Software 15.52%
DocuSign, Inc.*		4,104		956
Microsoft Corp.		52,290		12,129
RingCentral, Inc. Class A*		7,132		2,660
salesforce.com, Inc.*		13,811		3,115
ServiceNow, Inc.*		4,475		2,430
Splunk, Inc.*		6,877		1,135
Total				22,425
Specialty Retail 2.30%
Burlington Stores, Inc.*		7,187		1,789
Home Depot, Inc. (The)		5,684		1,539
Total				3,328
Technology Hardware, Storage & Peripheral 7.74%
Apple, Inc.		84,755		11,184
Textiles, Apparel & Luxury Goods 1.74%
NIKE, Inc. Class B		18,775		2,508
Total Common Stocks (cost $110,786,665)				143,420

See Notes to Schedule of Investments. 3

Schedule of Investments (unaudited)(concluded)

LORD ABBETT SECURITIES TRUST – DURABLE GROWTH FUND January 31, 2021

Investments	Principal Amount (000)		Fair Value (000)
SHORT-TERM INVESTMENT 0.69%
Repurchase Agreement
Repurchase Agreement dated 1/29/2021, 0.00% due 2/1/2021 with Fixed Income Clearing Corp. collateralized by $1,019,600 of U.S. Treasury Note at 0.25% due 06/15/2023; value: $1,022,305; proceeds: $1,002,212 (cost $1,002,212)		$1,002	$	1,002
Total Investments in Securities 99.92% (cost $111,788,877)				144,422
Other Assets in Excess of Liabilities 0.08%				109
Net Assets 100.00%			$	144,531

ADR	American Depositary Receipt.
*	Non-income producing security.
(a)	Foreign security traded in U.S. dollars.

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund’s investments carried at fair value⁽¹⁾:

Investment Type(2)	Level 1 (000)		Level 2 (000)		Level 3 (000)		Total (000)
Common Stocks	$	143,420	$	–	$	–	$	143,420
Short-Term Investment
Repurchase Agreement		–		1,002		–		1,002
Total	$	143,420	$	1,002	$	–	$	144,422

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each industry and identification of foreign issuers and/or geography.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund’s net assets.

4 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – FOCUSED GROWTH FUND January 31, 2021

Investments	Shares		Fair Value (000)
COMMON STOCKS 97.86%
Aerospace & Defense 3.13%
Axon Enterprise, Inc.*		8,020	$	1,317
Automobiles 4.56%
Tesla, Inc.*		2,412		1,914
Biotechnology 4.51%
Iovance Biotherapeutics, Inc.*		9,651		423
TG Therapeutics, Inc.*		15,065		727
Turning Point Therapeutics, Inc.*		5,935		745
Total				1,895
Electrical Equipment 2.80%
Generac Holdings, Inc.*		4,779		1,178
Electronic Equipment, Instruments & Components 2.17%
Trimble, Inc.*		13,856		913
Entertainment 10.26%
Netflix, Inc.*		2,547		1,356
Roku, Inc.*		4,269		1,661
Walt Disney Co. (The)*		7,682		1,292
Total				4,309
Health Care Equipment & Supplies 7.46%
Align Technology, Inc.*		1,986		1,043
IDEXX Laboratories, Inc.*		1,855		888
Insulet Corp.*		4,493		1,201
Total				3,132
Hotels, Restaurants & Leisure 2.08%
DraftKings, Inc. Class A*		16,161		874
Information Technology Services 7.60%
PayPal Holdings, Inc.*		5,454		1,278
Shopify, Inc. Class A (Canada)*(a)		726		797
Square, Inc. Class A*		5,171		1,117
Total				3,192

Investments	Shares		Fair Value (000)
Interactive Media & Services 8.77%
Alphabet, Inc. Class A*		903	$	1,650
Match Group, Inc.*		6,138		859
Snap, Inc. Class A*		22,216		1,176
Total				3,685
Internet & Direct Marketing Retail 8.12%
Amazon.com, Inc.*		712		2,283
MercadoLibre, Inc. (Argentina)*(a)		635		1,130
Total				3,413
Road & Rail 3.60%
Uber Technologies, Inc.*		29,731		1,514
Semiconductors & Semiconductor Equipment 12.10%
Advanced Micro Devices, Inc.*		11,714		1,003
Enphase Energy, Inc.*		6,894		1,257
NVIDIA Corp.		2,862		1,487
QUALCOMM, Inc.		8,560		1,338
Total				5,085
Software 13.09%
Crowdstrike Holdings, Inc.
Class A*		4,384		946
Five9, Inc.*		6,521		1,084
Microsoft Corp.		9,265		2,149
RingCentral, Inc. Class A*		3,542		1,321
Total				5,500
Technology Hardware, Storage & Peripheral 5.67%
Apple, Inc.		18,043		2,381
Textiles, Apparel & Luxury Goods 1.94%
NIKE, Inc. Class B		6,087		813
Total Common Stocks (cost $33,869,972)				41,115

See Notes to Schedule of Investments. 5

Schedule of Investments (unaudited)(concluded)

LORD ABBETT SECURITIES TRUST – FOCUSED GROWTH FUND January 31, 2021

Investments	Principal Amount (000)		Fair Value (000)
SHORT-TERM INVESTMENT 0.99%
Repurchase Agreement
Repurchase Agreement dated 1/29/2021, 0.00% due 2/1/2021 with Fixed Income Clearing Corp. collateralized by $425,700 of U.S. Treasury Note at 0.25% due 6/15/2023; value: $426,829; proceeds: $418,407 (cost $418,407)		$418	$	418
Total Investments in Securities 98.85% (cost $34,288,379)				41,533
Other Assets in Excess of Liabilities 1.15%				483
Net Assets 100.00%			$	42,016

*	Non-income producing security.
(a)	Foreign security traded in U.S. dollars.

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund’s investments carried at fair value⁽¹⁾:

Investment Type(2)	Level 1 (000)		Level 2 (000)		Level 3 (000)		Total (000)
Common Stocks	$	41,115	$	–	$	–	$	41,115
Short-Term Investment
Repurchase Agreement		–		418		–		418
Total	$	41,115	$	418	$	–	$	41,533

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each industry and identification of foreign issuers and/or geography.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund’s net assets.

6 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – FOCUSED LARGE CAP VALUE FUND January 31, 2021

Investments	Shares		Fair Value (000)
COMMON STOCKS 99.13%
Aerospace & Defense 2.93%
Raytheon Technologies Corp.		282,720	$	18,866
Auto Components 2.86%
Lear Corp.		121,867		18,373
Automobiles 3.04%
Harley-Davidson, Inc.		488,110		19,568
Banks 10.10%
CIT Group, Inc.		619,564		22,862
Citigroup, Inc.		374,282		21,705
JPMorgan Chase & Co.		158,360		20,376
Total				64,943
Biotechnology 2.82%
AbbVie, Inc.		177,190		18,158
Building Products 2.95%
Masco Corp.		349,720		18,993
Capital Markets 9.39%
Ameriprise Financial, Inc.		115,216		22,798
Invesco Ltd.		1,087,718		22,396
KKR & Co., Inc. Class A		389,687		15,178
Total				60,372
Chemicals 2.82%
Dow, Inc.		349,917		18,161
Diversified Telecommunication Services 1.79%
Verizon Communications, Inc.		209,835		11,488
Electric: Utilities 3.62%
NRG Energy, Inc.		561,660		23,258
Electronic Equipment, Instruments & Components 2.60%
Avnet, Inc.		474,191		16,744

Investments	Shares		Fair Value (000)
Energy Equipment & Services 1.28%
Schlumberger Ltd.		370,880	$	8,237
Health Care Providers & Services 7.94%
CVS Health Corp.		236,522		16,947
McKesson Corp.		101,790		17,759
Universal Health Services, Inc. Class B		131,556		16,403
Total				51,109
Hotels, Restaurants & Leisure 3.42%
Caesars Entertainment, Inc.*		312,110		21,969
Household Products 3.94%
Spectrum Brands Holdings, Inc.		335,502		25,354
Insurance 6.40%
Fidelity National Financial, Inc.		562,870		20,432
Hartford Financial Services Group, Inc. (The)		431,910		20,740
Total				41,172
Machinery 5.58%
Allison Transmission Holdings, Inc.		445,000		18,112
Westinghouse Air Brake Technologies Corp.		239,322		17,760
Total				35,872
Media 6.00%
Comcast Corp. Class A		375,030		18,590
Nexstar Media Group, Inc. Class A		176,271		20,037
Total				38,627
Oil, Gas & Consumable Fuels 3.74%
Chevron Corp.		92,075		7,845
ONEOK, Inc.		200,550		7,988
Total SE ADR		195,094		8,209
Total				24,042

See Notes to Schedule of Investments. 7

Schedule of Investments (unaudited)(concluded)

LORD ABBETT SECURITIES TRUST – FOCUSED LARGE CAP VALUE FUND January 31, 2021

Investments	Shares		Fair Value (000)
Pharmaceuticals 2.42%
Bristol-Myers Squibb Co.		253,680	$	15,584
Semiconductors & Semiconductor Equipment 1.82%
Intel Corp.		210,991		11,712
Software 3.50%
McAfee Corp. Class A		1,194,110		22,509
Specialty Retail 6.00%
Lowe’s Cos., Inc.		118,878		19,835
TJX Cos., Inc. (The)		292,850		18,754
Total				38,589
Tobacco 2.17%
Philip Morris International, Inc.		175,600		13,987
Total Common Stocks (cost $517,167,812)				637,687

Investments	Principal Amount (000)		Fair Value (000)
SHORT-TERM INVESTMENT 0.71%
Repurchase Agreement
Repurchase Agreement dated 1/29/2021, 0.00% due 2/1/2021 with Fixed Income Clearing Corp. collateralized by $4,671,100 of U.S. Treasury Note at 0.25% due 06/15/2023; value: $4,683,493; proceeds: $4,591,581 (cost $4,591,581)		$4,592	$	4,592
Total Investments in Securities 99.84% (cost $521,759,393)				642,279
Other Assets in Excess of Liabilities 0.16%				1,039
Net Assets 100.00%			$	643,318

ADR	American Depositary Receipt.
*	Non-income producing security.

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund’s investments carried at fair value⁽¹⁾:

Investment Type(2)	Level 1 (000)		Level 2 (000)		Level 3 (000)		Total (000)
Common Stocks	$	637,687	$	–	$	–	$	637,687
Short-Term Investment
Repurchase Agreement		–		4,592		–		4,592
Total	$	637,687	$	4,592	$	–	$	642,279

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each industry and identification of foreign issuers and/or geography.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund’s net assets.

8 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – FOCUSED SMALL CAP VALUE FUND January 31, 2021

Investments	Shares		Fair Value (000)
COMMON STOCKS 96.80%
Aerospace & Defense 0.86%
Triumph Group, Inc.		138,791	$	1,503
Auto Components 2.99%
American Axle & Manufacturing Holdings, Inc.*		596,659		5,257
Automobiles 2.27%
Harley-Davidson, Inc.		99,328		3,982
Banks 16.27%
Bancorp, Inc. (The)*		394,056		6,608
BankUnited, Inc.		120,300		4,168
Pacific Premier Bancorp, Inc.		138,700		4,612
Sterling Bancorp		267,129		4,931
TCF Financial Corp.		99,296		3,859
Western Alliance Bancorp		64,373		4,389
Total				28,567
Building Products 2.72%
Masonite International Corp.*		47,944		4,770
Capital Markets 6.61%
Brightsphere Investment Group, Inc.		173,293		3,177
Moelis & Co. Class A		68,300		3,395
Sculptor Capital Management, Inc.		167,538		2,841
Victory Capital Holdings, Inc. Class A		103,569		2,198
Total				11,611
Chemicals 2.00%
Axalta Coating Systems Ltd.*		129,817		3,504
Commercial Services & Supplies 2.27%
SP Plus Corp.*		137,618		3,991
Construction & Engineering 1.94%
EMCOR Group, Inc.		38,592		3,408
Consumer Finance 1.57%
Nelnet, Inc. Class A		40,000		2,752

Investments	Shares		Fair Value (000)
Containers & Packaging 1.62%
Pactiv Evergreen, Inc.*		201,700	$	2,850
Electronic Equipment, Instruments & Components 2.00%
Avnet, Inc.		99,586		3,516
Energy Equipment & Services 1.23%
Core Laboratories NV (Netherlands)(a)		65,761		2,169
Equity Real Estate Investment Trusts 3.77%
Outfront Media, Inc.		150,767		2,748
Sunstone Hotel Investors, Inc.		361,672		3,870
Total				6,618
Health Care Equipment & Supplies 1.61%
NuVasive, Inc.*		52,500		2,821
Hotels, Restaurants & Leisure 2.19%
Caesars Entertainment, Inc.*		54,567		3,841
Household Durables 2.85%
Purple Innovation, Inc.*		147,073		5,006
Household Products 2.97%
Spectrum Brands Holdings, Inc.		68,927		5,209
Insurance 4.27%
Axis Capital Holdings Ltd.		60,300		2,768
ProSight Global, Inc.*		84,574		1,053
Stewart Information Services Corp.		79,425		3,683
Total				7,504
Leisure Products 2.43%
Malibu Boats, Inc. Class A*		60,800		4,263
Machinery 9.00%
Blue Bird Corp.*		149,100		3,057
Columbus McKinnon Corp.		87,200		3,766
Hillenbrand, Inc.		145,852		5,995
Miller Industries, Inc.		75,011		2,991
Total				15,809

See Notes to Schedule of Investments. 9

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – FOCUSED SMALL CAP VALUE FUND January 31, 2021

Investments	Shares		Fair Value (000)
Media 3.45%
EW Scripps Co. (The) Class A		175,600	$	2,601
Nexstar Media Group, Inc. Class A		30,396		3,455
Total				6,056
Metals & Mining 3.95%
Lundin Mining Corp.(b)	CAD	417,300		3,720
Worthington Industries, Inc.		61,507		3,219
Total				6,939
Oil, Gas & Consumable Fuels 3.30%
Devon Energy Corp.		65,181		1,073
MEG Energy Corp.*(b)	CAD	640,800		2,135
Par Pacific Holdings, Inc.*		194,308		2,580
Total				5,788
Real Estate Management & Development 2.16%
Realogy Holdings Corp.*		267,375		3,797
Semiconductors & Semiconductor Equipment 4.30%
Advanced Energy Industries, Inc.*		39,100		4,011
Ichor Holdings Ltd.*		98,100		3,541
Total				7,552
Technology Hardware, Storage & Peripherals 2.04%
Diebold Nixdorf, Inc.*		261,784		3,576
Thrifts & Mortgage Finance 4.16%
Essent Group Ltd.		71,400		2,987
Flagstar Bancorp, Inc.		100,800		4,319
Total				7,306
Total Common Stocks (cost $142,505,067)				169,965

Investments	Principal Amount (000)		Fair Value (000)
SHORT-TERM INVESTMENT 2.94%
Repurchase Agreement
Repurchase Agreement dated 1/29/2021, 0.00% due 2/1/2021 with Fixed Income Clearing Corp. collateralized by $5,275,600 of U.S. Treasury Note at 0.125% 7/15/2023; value: $5,272,558; proceeds: $5,169,173 (cost $5,169,173)		$5,169	$	5,169
Total Investments in Securities 99.74% (cost $147,674,240)				175,134
Foreign Cash and Other Assets in Excess of Liabilities 0.26%				454
Net Assets 100.00%			$	175,588

CAD	Canadian dollar.
*	Non-income producing security.
(a)	Foreign security traded in U.S. dollars.
(b)	Investment in non-U.S. dollar denominated securities.

10 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(concluded)

LORD ABBETT SECURITIES TRUST – FOCUSED SMALL CAP VALUE FUND January 31, 2021

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund’s investments carried at fair value⁽¹⁾:

Investment Type(2)	Level 1 (000)		Level 2 (000)		Level 3 (000)		Total (000)
Common Stocks	$	169,965	$	–	$	–	$	169,965
Short-Term Investment
Repurchase Agreement		–		5,169		–		5,169
Total	$	169,965	$	5,169	$	–	$	175,134

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each industry and identification of foreign issuers and/or geography.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund’s net assets.

See Notes to Schedule of Investments. 11

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – FUNDAMENTAL EQUITY FUND January 31, 2021

Investments	Shares		Fair Value (000)
COMMON STOCKS 99.46%
Aerospace & Defense 1.80%
Raytheon Technologies Corp.		475,940	$	31,759
Air Freight & Logistics 0.75%
Expeditors International of Washington, Inc.		147,740		13,226
Auto Components 1.42%
Lear Corp.		166,039		25,032
Automobiles 1.53%
General Motors Co.		534,010		27,064
Banks 9.06%
CIT Group, Inc.		802,450		29,610
East West Bancorp, Inc.		555,263		33,283
JPMorgan Chase & Co.		548,196		70,536
Western Alliance Bancorp		391,980		26,725
Total				160,154
Beverages 1.36%
PepsiCo, Inc.		175,416		23,957
Biotechnology 1.32%
AbbVie, Inc.		107,890		11,057
Vertex Pharmaceuticals, Inc.*		53,250		12,198
Total				23,255
Building Products 1.54%
Masco Corp.		502,060		27,267
Capital Markets 4.94%
Ameriprise Financial, Inc.		141,046		27,909
Blackstone Group, Inc. (The) Class A		362,940		24,386
Morgan Stanley		521,576		34,971
Total				87,266
Chemicals 4.34%
Corteva, Inc.		647,610		25,814
Dow, Inc.		434,650		22,558
PPG Industries, Inc.		210,979		28,421
Total				76,793

Investments	Shares		Fair Value (000)
Consumer Finance 1.96%
American Express Co.		298,196	$	34,668
Diversified Telecommunication Services 1.80%
Verizon Communications, Inc.		582,780		31,907
Electric: Utilities 2.28%
Edison International		371,378		21,600
NextEra Energy, Inc.		232,154		18,774
Total				40,374
Electrical Equipment 1.53%
Hubbell, Inc.		174,066		27,085
Equity Real Estate Investment Trusts 2.84%
Alexandria Real Estate Equities, Inc.		108,667		18,159
Host Hotels & Resorts, Inc.		994,919		13,481
Prologis, Inc.		179,403		18,515
Total				50,155
Health Care Equipment & Supplies 3.33%
Medtronic plc (Ireland)(a)		331,009		36,851
Zimmer Biomet Holdings, Inc.		143,630		22,072
Total				58,923
Health Care Providers & Services 3.66%
CVS Health Corp.		384,006		27,514
McKesson Corp.		87,483		15,263
UnitedHealth Group, Inc.		65,810		21,953
Total				64,730
Hotels, Restaurants & Leisure 1.21%
Choice Hotels International, Inc.		51,352		5,168
Domino’s Pizza, Inc.		43,700		16,202
Total				21,370
Household Products 2.65%
Colgate-Palmolive Co.		309,400		24,133
Procter & Gamble Co. (The)		176,963		22,689
Total				46,822

12 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – FUNDAMENTAL EQUITY FUND January 31, 2021

Investments	Shares		Fair Value (000)
Industrial Conglomerates 2.33%
Honeywell International, Inc.		210,642	$	41,153
Information Technology Services 0.93%
Mastercard, Inc. Class A		51,750		16,368
Insurance 4.92%
American International Group, Inc.		558,752		20,920
Everest Re Group Ltd.		115,015		24,277
Fidelity National Financial, Inc.		677,920		24,608
Globe Life, Inc.		190,640		17,232
Total				87,037
Interactive Media & Services 2.97%
Alphabet, Inc. Class A*		21,990		40,184
Facebook, Inc. Class A*		47,432		12,253
Total				52,437
Internet & Direct Marketing Retail 1.08%
eBay, Inc.		339,090		19,162
Life Sciences Tools & Services 2.08%
Thermo Fisher Scientific, Inc.		26,640		13,578
Waters Corp.*		87,339		23,116
Total				36,694
Machinery 3.29%
Cummins, Inc.		130,002		30,475
Westinghouse Air Brake Technologies Corp.		372,587		27,650
Total				58,125
Media 3.49%
Comcast Corp. Class A		639,652		31,707
Fox Corp. Class A		596,730		18,606
Nexstar Media Group, Inc. Class A		99,750		11,339
Total				61,652
Multi-Utilities 1.03%
CMS Energy Corp.		318,870		18,137

Investments	Shares		Fair Value (000)
Oil, Gas & Consumable Fuels 4.18%
Cabot Oil & Gas Corp.		732,460	$	13,426
Chevron Corp.		204,720		17,442
Marathon Petroleum Corp.		338,793		14,622
ONEOK, Inc.		264,562		10,538
Total SE ADR		424,500		17,863
Total				73,891
Personal Products 1.51%
Unilever plc(b)	GBP	457,610		26,658
Pharmaceuticals 4.78%
Bristol-Myers Squibb Co.		520,446		31,971
Eli Lilly and Co.		64,510		13,416
Merck & Co., Inc.		219,209		16,895
Sanofi(b)	EUR	235,550		22,153
Total				84,435
Road & Rail 1.77%
Landstar System, Inc.		128,604		17,928
Norfolk Southern Corp.		56,167		13,290
Total				31,218
Semiconductors & Semiconductor Equipment 6.00%
KLA Corp.		31,800		8,906
Micron Technology, Inc.*		183,630		14,373
QUALCOMM, Inc.		139,728		21,837
Taiwan Semiconductor Manufacturing Co., Ltd.	ADR	218,830		26,592
Texas Instruments, Inc.		207,077		34,310
Total				106,018
Software 2.82%
Microsoft Corp.		115,620		26,819
Oracle Corp.		381,260		23,040
Total				49,859
Specialty Retail 2.84%
Lowe’s Cos., Inc.		153,550		25,620
TJX Cos., Inc. (The)		382,966		24,525
Total				50,145

See Notes to Schedule of Investments. 13

Schedule of Investments (unaudited)(concluded)

LORD ABBETT SECURITIES TRUST – FUNDAMENTAL EQUITY FUND January 31, 2021

Investments	Shares		Fair Value (000)
Technology Hardware, Storage & Peripherals 2.60%
Apple, Inc.		222,530	$	29,365
NetApp, Inc.		250,400		16,637
Total				46,002
Tobacco 0.73%
Philip Morris International, Inc.		161,418		12,857
Water Utilities 0.79%
American Water Works Co., Inc.		88,100		14,010
Total Common Stocks (cost $1,393,190,251)				1,757,665

Investments	Principal Amount (000)		Fair Value (000)
SHORT-TERM INVESTMENT 0.43%
Repurchase Agreement
Repurchase Agreement dated 1/29/2021, 0.00% due 2/1/2021 with Fixed Income Clearing Corp. collateralized by $7,711,900 of U.S. Treasury Note at 0.125% due 7/15/2023; value: $7,707,453; proceeds: $7,556,257 (cost $7,556,257)		$7,556	$	7,556
Total Investments in Securities 99.89% (cost $1,400,746,508)				1,765,221
Other Assets in Excess of Liabilities 0.11%				1,942
Net Assets 100.00%			$	1,767,163

ADR	American Depositary Receipt. EUR Euro.
GBP	British pound.
*	Non-income producing security.
(a)	Foreign security traded in U.S. dollars.
(b)	Investment in non-U.S. dollar denominated securities.

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund’s investments carried at fair value⁽¹⁾:

Investment Type(2)	Level 1 (000)		Level 2 (000)		Level 3 (000)		Total (000)
Common Stocks
Personal Products	$	–	$	26,658	$	–	$	26,658
Pharmaceuticals		62,282		22,153		–		84,435
Remaining Industries		1,646,572		–		–		1,646,572
Short-Term Investment
Repurchase Agreement		–		7,556		–		7,556
Total	$	1,708,854	$	56,367	$	–	$	1,765,221

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each industry and identification of foreign issuers and/or geography. The table above is presented by Investment Type. Industries are presented within an Investment Type should such Investment Type include securities classified as two or more levels within the three-tier fair value hierarchy.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund’s net assets.

14 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – GLOBAL EQUITY RESEARCH FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
COMMON STOCKS 98.39%
Brazil 1.54%
Metals & Mining
Vale SA		8,109	$	130
Canada 3.60%
Aerospace & Defense 1.36%
CAE, Inc.		5,110		115
Information Technology Services 0.99%
Shopify, Inc.*		76		83
Insurance 0.80%
Intact Financial Corp.		605		67
Oil, Gas & Consumable Fuels 0.45%
Pembina Pipeline Corp.		1,453		38
Total Canada				303
China 2.64%
Construction Materials 0.96%
China Resources Cement Holdings Ltd.		73,329		81
Interactive Media & Services 1.68%
Tencent Holdings Ltd.		1,586		141
Total China				222
Denmark 1.09%
Beverages
Carlsberg A/S Class B		627		92
France 4.13%
Insurance 1.45%
AXA SA		5,522		122
Life Sciences Tools & Services 0.47%
Sartorius Stedim Biotech		95		40

Investments	Shares		U.S. $ Fair Value (000)
France (continued)
Multi-Utilities 1.18%
Engie SA*		6,366	$	99
Personal Products 1.03%
L’Oreal SA		247		87
Total France				348
Germany 1.28%
Semiconductors & Semiconductor Equipment
Infineon Technologies AG		2,684		108
Hong Kong 1.69%
Real Estate Management & Development 0.97%
Kerry Properties Ltd.		31,698		82
Textiles, Apparel & Luxury Goods 0.72%
Stella International Holdings Ltd.		50,959		60
Total Hong Kong				142
India 1.27%
Banks
ICICI Bank Ltd. ADR*		7,077		107
Italy 0.96%
Textiles, Apparel & Luxury Goods
Moncler SpA*		1,431		81
Japan 5.98%
Auto Components 1.26%
Denso Corp.		1,900		106
Building Products 1.16%
Sanwa Holdings Corp.		8,631		98

See Notes to Schedule of Investments. 15

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – GLOBAL EQUITY RESEARCH FUND January 31, 2021

Investments	Shares		U.S. $ Fair Value (000)
Japan (continued)
Electronic Equipment, Instruments & Components 2.43%
Keyence Corp.		186	$	100
TDK Corp.		649		105
				205
Household Durables 1.13%
Sony Corp.		994		95
Total Japan				504
Mexico 2.00%
Banks 1.25%
Grupo Financiero Banorte SAB de CV*		21,228		105
Transportation Infrastructure 0.75%
Grupo Aeroportuario del Pacifico SAB de CV*		6,278		64
Total Mexico				169
Netherlands 0.74%
Information Technology Services
Adyen NV*†		30		63
Norway 1.70%
Independent Power and Renewable Electricity Producer 0.81%
Scatec ASA†		1,799		68
Oil, Gas & Consumable Fuels 0.89%
Equinor ASA		4,168		75
Total Norway				143
South Korea 2.79%
Technology Hardware, Storage & Peripherals
Samsung Electronics Co., Ltd.		3,215		235

Investments	Shares		U.S. $ Fair Value (000)
Sweden 1.20%
Machinery
Alfa Laval AB*		3,870	$	101
Switzerland 2.45%
Capital Markets 1.61%
UBS Group AG		9,386		135
Life Sciences Tools & Services 0.84%
Lonza Group AG		111		71
Total Switzerland				206
Taiwan 2.02%
Semiconductors & Semiconductor Equipment
Taiwan Semiconductor Manufacturing Co., Ltd.		8,052		170
United Kingdom 4.04%
Capital Markets 0.87%
London Stock Exchange Group plc		617		73
Equity Real Estate Investment Trusts 0.99%
UNITE Group plc (The)*		6,345		83
Insurance 0.65%
Prudential plc		3,456		55
Personal Products 0.95%
Unilever PLC		1,366		80
Specialty Retail 0.58%
WH Smith plc		2,349		49
Total United Kingdom				340
United States 57.27%
Auto Components 1.84%
Lear Corp.		1,028		155

16 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – GLOBAL EQUITY RESEARCH FUND January 31, 2021

Investments	Shares		U.S. $ Fair Value (000)
United States (continued)
Banks 1.60%
Bancorp, Inc. (The)*		8,062	$	135
Beverages 1.10%
Coca-Cola Co. (The)		1,928		93
Biotechnology 2.98%
Natera, Inc.*		929		99
TG Therapeutics, Inc.*		942		45
Vertex Pharmaceuticals, Inc.*		466		107
				251
Building Products 0.89%
Masco Corp.		1,387		75
Capital Markets 1.04%
BlackRock, Inc.		125		88
Chemicals 2.34%
Axalta Coating Systems Ltd.*		3,630		98
Valvoline, Inc.		4,153		99
				197
Consumer Finance 2.91%
Ally Financial, Inc.		3,136		119
Discover Financial Services		1,514		126
				245
Electrical Equipment 1.13%
AMETEK, Inc.		834		95
Entertainment 2.93%
Activision Blizzard, Inc.		1,065		97
Live Nation Entertainment, Inc.*		942		63
Roku, Inc.*		224		87
				247
Equity Real Estate Investment Trusts 0.88%
Alexandria Real Estate Equities, Inc.		445		74

Investments	Shares		U.S. $ Fair Value (000)
United States (continued)
Food & Staples Retailing 2.68%
Sysco Corp.		926	$	66
Walmart, Inc.		1,136		160
				226
Health Care Equipment & Supplies 1.52%
DexCom, Inc.*		121		45
Zimmer Biomet Holdings, Inc.		539		83
				128
Health Care Providers & Services 1.19%
UnitedHealth Group, Inc.		300		100
Hotels, Restaurants & Leisure 0.83%
Caesars Entertainment, Inc.*		991		70
Information Technology Services 2.41%
Mastercard, Inc. Class A		351		111
PayPal Holdings, Inc.*		391		92
				203
Interactive Media & Services 4.78%
Alphabet, Inc. Class A*		114		209
Facebook, Inc. Class A*		519		134
Pinterest, Inc. Class A*		878		60
				403
Internet & Direct Marketing Retail 3.00%
Amazon.com, Inc.*		79		253
Life Sciences Tools & Services 1.09%
10X Genomics, Inc. Class A*		538		92
Machinery 2.47%
Hillenbrand, Inc.		3,276		135
Stanley Black & Decker, Inc.		424		73
				208
Multi-Line Retail 1.34%
Dollar Tree, Inc.*		1,116		113

See Notes to Schedule of Investments. 17

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – GLOBAL EQUITY RESEARCH FUND January 31, 2021

Investments	Shares		U.S. $ Fair Value (000)
United States (continued)
Oil, Gas & Consumable Fuels 1.88%
Marathon Petroleum Corp.		1,394	$	60
Pioneer Natural Resources Co.		811		98
				158
Pharmaceuticals 2.77%
Eli Lilly and Co.		635		132
Merck & Co., Inc.		1,310		101
				233
Road & Rail 1.64%
Norfolk Southern Corp.		582		138
Semiconductors & Semiconductor Equipment 2.83%
Applied Materials, Inc.		940		91
NVIDIA Corp.		284		147
				238
Software 6.29%
Microsoft Corp.		1,233		286
RingCentral, Inc. Class A*		243		91
salesforce.com, Inc.*		369		83
Trade Desk, Inc. (The) Class A*		92		70
				530
Specialty Retail 0.91%
TJX Cos., Inc. (The)		1,204		77
Total United States				4,825
Total Common Stocks (cost $6,889,479)				8,289

Investments	Principal Amount (000)		U.S. $ Fair Value (000)
SHORT-TERM INVESTMENT 1.74%
Repurchase Agreement
Repurchase Agreement dated 1/29/2021, 0.00% due 2/1/2021 with Fixed Income Clearing Corp. collateralized by $150,000 of U.S. Treasury Note at 0.25% due 06/15/2023; value: $150,398; proceeds: $147,354 (cost $147,354)		$147	$	147
Total Investments in Securities 100.13% (cost $7,036,833)				8,436
Liabilities in Excess of Foreign Cash and Other Assets (0.13)%				(11	)
Net Assets 100.00%			$	8,425

ADR	American Depositary Receipt.
*	Non-income producing security.
†	Security was purchased pursuant to Rule 144A under the Securities Act of 1933 and, unless registered under such Act or exempted from registration, may only be resold to qualified institutional buyers. At January 31, 2021, the total value of Rule 144A securities was $131, which represents 1.55% of net assets.

18 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(concluded)

LORD ABBETT SECURITIES TRUST – GLOBAL EQUITY RESEARCH FUND January 31, 2021

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund’s investments carried at fair value⁽¹⁾:

Investment Type(2)	Level 1 (000)		Level 2 (000)		Level 3 (000)		Total (000)
Common Stocks
China	$	–	$	222	$	–	$	222
Denmark		–		92		–		92
France		40		308		–		348
Germany		–		108		–		108
Hong Kong		–		142		–		142
Italy		–		81		–		81
Japan		–		504		–		504
Netherlands		–		63		–		63
Norway		–		143		–		143
South Korea		–		235		–		235
Sweden		–		101		–		101
Switzerland		–		206		–		206
Taiwan		–		170		–		170
United Kingdom		80		260		–		340
Remaining Countries		5,534		–		–		5,534
Short-Term Investment
Repurchase Agreement		–		147		–		147
Total	$	5,654	$	2,782	$	–	$	8,436

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each industry and identification of foreign issuers and/or geography. The table above is presented by Investment Type. Industries are presented within an Investment Type should such Investment Type include securities classified as two or more levels within the three-tier fair value hierarchy.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund’s net assets.

See Notes to Schedule of Investments. 19

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – GROWTH LEADERS FUND January 31, 2021

			Fair
			Value
Investments	Shares		(000)
COMMON STOCKS 98.38%
Aerospace & Defense 1.60%
Axon Enterprise, Inc.*		753,182	$	123,642
HEICO Corp.		125,350		14,759
Total				138,401
Automobiles 3.79%
Tesla, Inc.*		413,502		328,126
Banks 0.53%
SVB Financial Group*		104,725		45,847
Biotechnology 7.38%
Arena Pharmaceuticals, Inc.*		1,163,312		86,364
Argenx SE ADR*		161,323		47,271
Iovance Biotherapeutics, Inc.*		1,003,033		43,973
Mirati Therapeutics, Inc.*		328,805		67,514
Natera, Inc.*		358,837		38,266
Neurocrine Biosciences, Inc.*		653,862		71,761
Seagen, Inc.*		302,936		49,763
TG Therapeutics, Inc.*		2,396,820		115,695
Turning Point Therapeutics, Inc.*		640,862		80,422
Vertex Pharmaceuticals, Inc.*		169,402		38,807
Total				639,836
Building Products 0.73%
AZEK Co., Inc. (The)*		1,578,458		62,965
Capital Markets 1.35%
MarketAxess Holdings, Inc.		109,591		59,262
MSCI, Inc.		145,874		57,664
Total				116,926
Diversified Consumer Services 0.55%
Bright Horizons Family Solutions, Inc.*		315,818		47,995
Electrical Equipment 2.67%
Generac Holdings, Inc.*		415,524		102,393
Plug Power, Inc.*		1,528,604		96,562

			Fair
			Value
Investments	Shares		(000)
Electrical Equipment (continued)
Shoals Technologies Group, Inc.
Class A*		23,746	$	806
Sunrun, Inc.*		457,685		31,704
Total				231,465
Electronic Equipment, Instruments & Components 3.24%
Amphenol Corp. Class A		750,010		93,661
Cognex Corp.		990,367		81,339
Trimble, Inc.*		1,612,049		106,250
Total				281,250
Entertainment 6.84%
Activision Blizzard, Inc.		1,067,077		97,104
Live Nation Entertainment, Inc.*		976,971		64,920
Netflix, Inc.*		265,786		141,502
Roku, Inc.*		532,418		207,126
Walt Disney Co. (The)*		490,885		82,552
Total				593,204
Health Care Equipment & Supplies 5.72%
Align Technology, Inc.*		215,815		113,385
Danaher Corp.		185,728		44,174
IDEXX Laboratories, Inc.*		166,030		79,475
Insulet Corp.*		468,830		125,262
Intuitive Surgical, Inc.*		94,192		70,422
Nevro Corp.*		389,118		62,955
Total				495,673
Health Care Providers & Services 0.50%
Guardant Health, Inc.*		277,978		43,226
Hotels, Restaurants & Leisure 1.78%
Airbnb, Inc. Class A*		5,485		1,007
DraftKings, Inc. Class A*		1,841,610		99,650
Vail Resorts, Inc.		203,184		54,039
Total				154,696

20 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – GROWTH LEADERS FUND January 31, 2021

			Fair
			Value
Investments	Shares		(000)
Information Technology Services 5.61%
Affirm Holdings, Inc.*		56,907	$	5,667
EPAM Systems, Inc.*		149,327		51,433
Mastercard, Inc. Class A		272,777		86,277
PayPal Holdings, Inc.*		577,319		135,272
Shopify, Inc. Class A (Canada)*(a)		66,776		73,359
Square, Inc. Class A*		619,742		133,839
Total				485,847
Interactive Media & Services 8.01%
Alphabet, Inc. Class A*		164,164		299,987
Match Group, Inc.*		856,912		119,848
Pinterest, Inc. Class A*		2,175,472		149,041
Snap, Inc. Class A*		2,362,832		125,088
Total				693,964
Internet & Direct Marketing Retail 9.38%
Amazon.com, Inc.*		147,979		474,450
Chewy, Inc. Class A*		816,522		83,138
MercadoLibre, Inc. (Argentina)*(a)		77,905		138,633
Stitch Fix, Inc. Class A*		1,219,587		116,398
Total				812,619
Leisure Products 0.70%
Peloton Interactive, Inc. Class A*		416,981		60,933
Life Sciences Tools & Services 1.20%
10X Genomics, Inc. Class A*		609,901		104,385
Pharmaceuticals 0.64%
Zoetis, Inc.		357,351		55,121
Professional Services 0.62%
CoStar Group, Inc.*		59,917		53,908
Road & Rail 2.04%
Uber Technologies, Inc.*		3,464,408		176,442

			Fair
			Value
Investments	Shares		(000)
Semiconductors & Semiconductor Equipment 11.26%
Advanced Micro Devices, Inc.*		1,460,680	$	125,093
Applied Materials, Inc.		1,221,053		118,051
Enphase Energy, Inc.*		644,883		117,594
First Solar, Inc.*		854,815		84,755
Inphi Corp.*		501,220		84,511
Monolithic Power Systems, Inc.		239,958		85,255
NVIDIA Corp.		375,673		195,196
QUALCOMM, Inc.		1,055,881		165,013
Total				975,468
Software 13.82%
Avalara, Inc.*		339,897		50,985
C3.ai, Inc. Class A*(b)		17,412		2,431
Coupa Software, Inc.*		225,370		69,835
Crowdstrike Holdings, Inc. Class A*		685,657		147,965
DocuSign, Inc.*		330,429		76,954
Five9, Inc.*		680,908		113,201
Microsoft Corp.		2,022,234		469,077
Paycom Software, Inc.*		207,114		78,649
Qualtrics International, Inc. Class A*		651,848		28,681
RingCentral, Inc. Class A*		199,567		74,423
Trade Desk, Inc. (The) Class A*		110,998		85,023
Total				1,197,224
Specialty Retail 0.52%
Carvana Co.*		171,221		44,721
Technology Hardware, Storage & Peripherals 5.95%
Apple, Inc.		3,906,931		515,559
Textiles, Apparel & Luxury Goods 1.95%
Lululemon Athletica, Inc. (Canada)*(a)		175,971		57,838
NIKE, Inc. Class B		833,852		111,394
Total				169,232
Total Common Stocks (cost $5,752,339,032)				8,525,033

See Notes to Schedule of Investments. 21

Schedule of Investments (unaudited)(concluded)

LORD ABBETT SECURITIES TRUST – GROWTH LEADERS FUND January 31, 2021

	Principal		Fair
	Amount		Value
Investments	(000)		(000)
SHORT-TERM INVESTMENTS 0.62%
Repurchase Agreement 0.60%
Repurchase Agreement dated 1/29/2021, 0.00% due 2/1/2021 with Fixed Income Clearing Corp. collateralized by $53,438,100 of U.S. Treasury Note at 0.125% due 7/15/2023; value: $53,407,284; proceeds: $52,360,051 (cost $52,360,051)	$	52,360	$	52,360

			Fair
			Value
Investments	Shares		(000)
Money Market Fund 0.02%
Fidelity Government Portfolio(c) (cost $1,595,058)		1,595,058	$	1,595
Time Deposit 0.00%
CitiBank N.A.(c) (cost $177,229)		177,229		177
Total Short-Term Investments (cost $54,132,338)				54,132
Total Investments in Securities 99.00% (cost $5,806,471,370)				8,579,165
Other Assets in Excess of Liabilities 1.00%				86,518
Net Assets 100.00%			$	8,665,683

ADR	American Depositary Receipt.
*	Non-income producing security.
(a)	Foreign security traded in U.S. dollars.
(b)	All or a portion of this security is temporarily on loan to unaffiliated broker/dealers.
(c)	Security was purchased with the cash collateral from loaned securities.

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund's investments carried at fair value⁽¹⁾:

	Level 1		Level 2		Level 3		Total
Investment Type(2)	(000)		(000)		(000)		(000)
Common Stocks	$	8,525,033	$	–	$	–	$	8,525,033
Short-Term Investments
Repurchase Agreement		–		52,360		–		52,360
Money Market Fund		1,595		–		–		1,595
Time Deposit		–		177		–		177
Total	$	8,526,628	$	52,537	$	–	$	8,579,165

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each industry and identification of foreign issuers and/or geography.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund’s net assets.

22 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – HEALTH CARE FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
COMMON STOCKS 96.19%
Belgium 0.80%
Pharmaceuticals
UCB SA		538	$	56
Canada 0.76%
Biotechnology
Trillium Therapeutics, Inc.*		4,041		53
China 2.33%
Biotechnology 1.47%
I-Mab ADR*		847		46
Zai Lab Ltd. ADR*		348		56
				102
Life Sciences Tools & Services 0.86%
Wuxi Biologics Cayman, Inc.*†		4,324		60
Total China				162
Denmark 2.80%
Biotechnology 1.33%
Genmab A/S*		233		93
Pharmaceuticals 1.47%
Novo Nordisk A/S Class B		1,468		102
Total Denmark				195
France 1.52%
Life Sciences Tools & Services 0.99%
Sartorius Stedim Biotech		165		69
Pharmaceuticals 0.53%
Sanofi		389		37
Total France				106
Germany 0.26%
Biotechnology
MorphoSys AG ADR*		585		18

			U.S. $ Fair
			Value
Investments	Shares		(000)
Japan 0.50%
Health Care Technology
M3, Inc.		409	$	35
Netherlands 0.53%
Biotechnology
Argenx SE*		126		37
Switzerland 4.44%
Biotechnology 0.82%
CRISPR Therapeutics AG*		343		57
Health Care Equipment & Supplies 0.90%
Alcon, Inc.*		880		63
Life Sciences Tools & Services 1.87%
Lonza Group AG		164		105
Tecan Group AG		53		25
				130
Pharmaceuticals 0.85%
Roche Holding AG		171		59
Total Switzerland				309
United Kingdom 2.30%
Pharmaceuticals
AstraZeneca plc		1,196		122
GW Pharmaceuticals plc ADR*		248		38
Total United Kingdom				160
United States 79.95%
Biotechnology 23.34%
Acceleron Pharma, Inc.*		462		53
Amgen, Inc.		245		59
Arena Pharmaceuticals, Inc.*		972		72
Blueprint Medicines Corp.*		421		41
Bridgebio Pharma, Inc.*		1,099		62
ChemoCentryx, Inc.*		578		33

See Notes to Schedule of Investments. 23

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – HEALTH CARE FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
United States (continued)
Constellation Pharmaceuticals, Inc.*		2,346	$	77
Insmed, Inc.*		2,724		102
Iovance Biotherapeutics, Inc.*		1,406		62
Karuna Therapeutics, Inc.*		372		37
Krystal Biotech, Inc.*		892		62
Mirati Therapeutics, Inc.*		421		87
Natera, Inc.*		1,071		114
Neurocrine Biosciences, Inc.*		494		54
Rigel Pharmaceuticals, Inc.*		14,279		52
Rocket Pharmaceuticals, Inc.*		1,153		64
Seagen, Inc.*		402		66
SpringWorks Therapeutics, Inc.*		642		54
Stoke Therapeutics, Inc.*		513		31
TG Therapeutics, Inc.*		2,141		103
Turning Point Therapeutics, Inc.*		596		75
Twist Bioscience Corp.*		436		72
Ultragenyx Pharmaceutical, Inc.*		386		54
Vertex Pharmaceuticals, Inc.*		608		139
				1,625
Electronic Equipment, Instruments & Components 0.78%
908 Devices, Inc.*		989		54
Health Care Equipment & Supplies 23.66%
Abbott Laboratories		2,161		267
Align Technology, Inc.*		178		93
Axonics Modulation Technologies, Inc.*		1,001		52
Boston Scientific Corp.*		1,708		60
Cooper Cos., Inc. (The)		184		67
Danaher Corp.		907		216
DexCom, Inc.*		195		73
Edwards Lifesciences Corp.*		1,135		94
IDEXX Laboratories, Inc.*		219		105
Inari Medical, Inc.*		620		59
Insulet Corp.*		453		121
Intuitive Surgical, Inc.*		153		114

			U.S. $ Fair
			Value
Investments	Shares		(000)
United States (continued)
Nevro Corp.*		350	$	57
Outset Medical, Inc.*		749		39
Pulmonx Corp.*		845		48
Silk Road Medical, Inc.*		451		24
West Pharmaceutical Services, Inc.		193		58
Zimmer Biomet Holdings, Inc.		649		100
				1,647
Health Care Providers & Services 6.31%
CVS Health Corp.		665		48
Guardant Health, Inc.*		511		79
HCA Healthcare, Inc.		485		79
UnitedHealth Group, Inc.		699		233
				439
Health Care Technology 3.85%
Inspire Medical Systems, Inc.*		252		51
Schrodinger, Inc.*		774		70
Teladoc Health, Inc.*		316		83
Veeva Systems, Inc. Class A*		230		64
				268
Internet & Direct Marketing Retail 0.91%
Chewy, Inc. Class A*		619		63
Life Sciences Tools & Services 11.95%
10X Genomics, Inc. Class A*		469		80
Adaptive Biotechnologies Corp.* 757				42
Berkeley Lights, Inc.*		709		51
Bio-Rad Laboratories, Inc. Class A*		135		78
Charles River Laboratories International, Inc.*		185		48
Codexis, Inc.*		1,629		38
Maravai LifeSciences Holdings, Inc. Class A*		1,840		64
Pacific Biosciences of California, Inc.*		2,110		68

24 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – HEALTH CARE FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
United States (continued)
Quanterix Corp.*		1,086	$	70
Repligen Corp.*		367		74
Seer, Inc.*(a)		535		33
Thermo Fisher Scientific, Inc.		364		186
				832
Pharmaceuticals 9.15%
Catalent, Inc.*		469		54
Eli Lilly and Co.		1,245		259
Horizon Therapeutics Plc*		998		72
Intra-Cellular Therapies, Inc.*		862		28
Merck & Co., Inc.		1,581		122
Zoetis, Inc.		663		102
				637
Total United States				5,565
Total Common Stocks (cost $5,578,712)				6,696
	Principal
	Amount
	(000)
SHORT-TERM INVESTMENTS 8.42%
Repurchase Agreement 7.94%
Repurchase Agreement dated 1/29/2021, 0.00% due 2/1/2021 with Fixed Income Clearing Corp. collateralized by $562,600 of U.S. Treasury Note at 0.25% due 6/15/2023; value: $564,092; proceeds: $552,997 (cost $552,997)	$	553		553

			U.S. $ Fair
			Value
Investments	Shares		(000)
Money Market Fund 0.43%
Fidelity Government Portfolio(b) (cost $30,262)		30,262	$	30
Time Deposit 0.05%
CitiBank N.A.(b) (cost $3,363)		3,363		3
Total Short- Term Investments (cost $586,622)				586
Total Investments in Securities 104.61% (cost $6,165,334)				7,282
Liabilities in Excess of Other Assets (4.61)%				(321	)
Net Assets 100.00%			$	6,961

ADR	American Depositary Receipt.
*	Non-income producing security.
†	Security was purchased pursuant to Rule 144A under the Securities Act of 1933 and, unless registered under such Act or exempted from registration, may only be resold to qualified institutional buyers. At January 31, 2021, the total value of Rule 144A securities was $60, which represents 0.86% of net assets.
(a)	All or a portion of this security is temporarily on loan to unaffiliated broker/dealers.
(b)	Security was purchased with the cash collateral from loaned securities.

See Notes to Schedule of Investments. 25

Schedule of Investments (unaudited)(concluded)

LORD ABBETT SECURITIES TRUST – HEALTH CARE FUND January 31, 2021

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund's investments carried at fair value⁽¹⁾:

Investment Type(2)	Level 1 (000)		Level 2 (000)		Level 3 (000)		Total (000)
Common Stocks
Canada	$	53	$	–	$	–	$	53
China		102		60		–		162
France		69		37		–		106
Germany		18		–		–		18
Switzerland		120		189		–		309
United Kingdom		38		122		–		160
United States		5,565		–		–		5,565
Remaining Countries		–		323		–		323
Short-Term Investments
Repurchase Agreement		–		553		–		553
Money Market Fund		30		–		–		30
Time Deposit		–		3		–		3
Total	$	5,995	$	1,287	$	–	$	7,282

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each industry and identification of foreign issuers and/or geography. The table above is presented by Investment Type. Industries are presented within an Investment Type should such Investment Type include securities classified as two or more levels within the three-tier fair value hierarchy.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund's net assets.

26 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL EQUITY FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
COMMON STOCKS 100.01%
Australia 3.07%
Capital Markets 0.96%
Macquarie Group Ltd.		39,487	$	3,938
Equity Real Estate Investment Trusts 0.65%
Goodman Group		198,093		2,666
Metals & Mining 1.46%
BHP Group Ltd.		178,800		5,963
Total Australia				12,567
Austria 0.60%
Oil, Gas & Consumable Fuels
OMV AG		59,035		2,477
Belgium 1.88%
Banks 1.08%
KBC Group NV*		63,469		4,426
Beverages 0.80%
Anheuser-Busch InBev SA		52,352		3,286
Total Belgium				7,712
Brazil 0.59%
Metals & Mining
Vale SA ADR		150,759		2,435
Canada 2.77%
Aerospace & Defense 0.92%
CAE, Inc.		166,200		3,755
Insurance 0.58%
Intact Financial Corp.		3,000		326
Intact Financial Corp.		18,800		2,073
				2,399

			U.S. $ Fair
			Value
Investments	Shares		(000)
Canada (continued)
Oil, Gas & Consumable Fuels 1.27%
Pembina Pipeline Corp.		109,367	$	2,879
Suncor Energy, Inc.		139,000		2,325
				5,204
Total Canada				11,358
Chile 0.50%
Metals & Mining
Lundin Mining Corp.		229,400		2,045
China 10.83%
Construction Materials 0.52%
China Resources Cement Holdings Ltd.		1,922,000		2,119
Information Technology Services 0.86%
GDS Holdings Ltd. ADR*		33,919		3,513
Insurance 0.98%
Ping An Insurance Group Co. of China Ltd. Class H		342,000		4,028
Interactive Media & Services 2.91%
Tencent Holdings Ltd.		133,700		11,913
Internet & Direct Marketing Retail 2.52%
Alibaba Group Holding Ltd. ADR*		31,939		8,107
Pinduoduo, Inc. ADR*		13,353		2,213
				10,320
Life Sciences Tools & Services 0.88%
Wuxi Biologics Cayman, Inc.*†		256,000		3,584
Machinery 0.83%
Airtac International Group		96,000		3,415

See Notes to Schedule of Investments. 27

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL EQUITY FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
China (continued)
Real Estate Management & Development 0.60%
Logan Group Co., Ltd.		1,656,000	$	2,472
Textiles, Apparel & Luxury Goods 0.73%
ANTA Sports Products Ltd.		182,000		2,997
Total China				44,361
Denmark 5.09%
Air Freight & Logistics 0.81%
DSV PANALPINA A/S		21,124		3,296
Beverages 0.95%
Carlsberg A/S Class B		26,582		3,884
Biotechnology 1.15%
Genmab A/S*		11,870		4,726
Electrical Equipment 0.96%
Vestas Wind Systems A/S		18,230		3,914
Pharmaceuticals 1.22%
Novo Nordisk A/S Class B		71,916		5,010
Total Denmark				20,830
Finland 0.87%
Banks
Nordea Bank Abp*		441,856		3,581
France 10.74%
Aerospace & Defense 1.49%
Airbus SE*		28,642		2,880
Safran SA*		25,758		3,238
				6,118
Auto Components 0.91%
Cie Generale des Etablissements Michelin SCA		26,861		3,702

			U.S. $ Fair
			Value
Investments	Shares		(000)
France (continued)
Banks 0.46%
Credit Agricole SA*		166,664	$	1,886
Chemicals 1.09%
Air Liquide SA		27,343		4,472
Electrical Equipment 1.17%
Schneider Electric SE		32,694		4,785
Life Sciences Tools & Services 1.01%
Sartorius Stedim Biotech		9,865		4,130
Multi-Utilities 0.85%
Engie SA*		224,007		3,477
Oil, Gas & Consumable Fuels 1.04%
Total SE		100,819		4,249
Personal Products 1.21%
L'Oreal SA		14,096		4,959
Textiles, Apparel & Luxury Goods 1.51%
LVMH Moet Hennessy Louis Vuitton SE		10,248		6,196
Total France				43,974
Germany 7.06%
Air Freight & Logistics 1.11%
Deutsche Post AG Registered Shares		92,345		4,561
Auto Components 0.66%
Continental AG		19,199		2,687
Automobiles 0.93%
Volkswagen AG		18,039		3,807
Chemicals 0.73%
Symrise AG		24,141		3,004

28 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL EQUITY FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
Germany (continued)
Insurance 1.02%
Allianz SE Registered Shares		18,422	$	4,164
Media 0.55%
Stroeer SE & Co. KGaA		24,887		2,242
Semiconductors & Semiconductor Equipment 1.09%
Infineon Technologies AG		111,554		4,469
Textiles, Apparel & Luxury Goods 0.97%
adidas AG*		12,573		3,987
Total Germany				28,921
Hong Kong 3.84%
Capital Markets 1.26%
Hong Kong Exchanges & Clearing Ltd.		80,800		5,166
Insurance 1.59%
AIA Group Ltd.		540,500		6,516
Machinery 0.99%
Techtronic Industries Co. Ltd.		271,500		4,056
Total Hong Kong				15,738
India 1.72%
Banks
HDFC Bank Ltd. ADR*		44,750		3,227
ICICI Bank Ltd. ADR*		252,680		3,815
Total India				7,042
Indonesia 0.90%
Banks
Bank Rakyat Indonesia Persero Tbk PT		12,458,000		3,693

			U.S. $ Fair
			Value
Investments	Shares		(000)
Ireland 1.37%
Construction Materials 0.87%
CRH plc		86,117	$	3,554
Hotels, Restaurants & Leisure 0.50%
Flutter Entertainment plc*		11,097		2,064
Total Ireland				5,618
Italy 0.79%
Textiles, Apparel & Luxury Goods
Moncler SpA*		57,627		3,247
Japan 15.36%
Auto Components 1.10%
Denso Corp.		81,000		4,502
Automobiles 1.50%
Toyota Motor Corp.		87,800		6,158
Banks 0.64%
Sumitomo Mitsui Financial Group, Inc.		83,800		2,603
Beverages 0.63%
Asahi Group Holdings Ltd.		63,900		2,580
Building Products 1.05%
Daikin Industries Ltd.		20,400		4,307
Diversified Financial Services 0.68%
ORIX Corp.		173,500		2,784
Electrical Equipment 1.13%
Nidec Corp.		34,900		4,644
Electronic Equipment, Instruments & Components 3.73%
Keyence Corp.		10,947		5,877
Murata Manufacturing Co., Ltd.		57,900		5,561
TDK Corp.		23,800		3,849
				15,287

See Notes to Schedule of Investments. 29

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL EQUITY FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
Japan (continued)
Health Care Equipment & Supplies 1.11%
Hoya Corp.		35,400	$	4,530
Household Durables 1.70%
Sony Corp.		72,700		6,958
Specialty Retail 0.97%
Fast Retailing Co. Ltd.		4,600		3,954
Trading Companies & Distributors 1.12%
ITOCHU Corp.		160,900		4,608
Total Japan				62,915
Mexico 1.03%
Banks 0.54%
Grupo Financiero Banorte SAB de CV*		447,300		2,216
Transportation Infrastructure 0.49%
Grupo Aeroportuario del Pacifico SAB de CV ADR*		19,936		1,990
Total Mexico				4,206
Netherlands 3.44%
Chemicals 0.85%
Akzo Nobel NV		34,369		3,499
Information Technology Services 0.89%
Adyen NV*†		1,753		3,662
Semiconductors & Semiconductor Equipment 1.70%
ASML Holding NV		13,007		6,944
Total Netherlands				14,105
Norway 0.97%
Oil, Gas & Consumable Fuels
Equinor ASA		221,553		3,970

			U.S. $ Fair
			Value
Investments	Shares		(000)
Poland 0.53%
Air Freight & Logistics
InPost SA*		90,000	$	2,163
South Africa 1.08%
Metals & Mining
Anglo American plc		134,108		4,411
South Korea 2.62%
Technology Hardware, Storage & Peripherals
Samsung Electronics Co., Ltd.		146,948		10,743
Spain 3.18%
Diversified Telecommunication Services 0.92%
Cellnex Telecom SA†		64,623		3,786
Electric: Utilities 1.32%
Iberdrola SA		393,885		5,333
Iberdrola SA		5,627		76
				5,409
Electrical Equipment 0.94%
Siemens Gamesa Renewable Energy SA		93,693		3,844
Total Spain				13,039
Sweden 1.69%
Machinery
Atlas Copco AB A Shares		56,280		3,053
Sandvik AB*		154,659		3,852
Total Sweden				6,905
Switzerland 6.65%
Capital Markets 1.18%
UBS Group AG		334,544		4,822
Food Products 2.01%
Nestle SA Registered Shares		73,360		8,223

30 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL EQUITY FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
Switzerland (continued)
Insurance 1.08%
Zurich Financial Services AG		11,118	$	4,446
Life Sciences Tools & Services 1.34%
Lonza Group AG		8,619		5,505
Pharmaceuticals 1.04%
Roche Holding AG		12,323		4,253
Total Switzerland				27,249
Taiwan 4.38%
Entertainment 0.50%
Sea Ltd. ADR*		9,385		2,034
Semiconductors & Semiconductor Equipment 3.88%
MediaTek, Inc.		144,000		4,498
Taiwan Semiconductor Manufacturing Co., Ltd.		306,000		6,467
Taiwan Semiconductor Manufacturing Co., Ltd. ADR		40,565		4,929
				15,894
Total Taiwan				17,928
United Kingdom 4.81%
Banks 0.70%
Standard Chartered plc*		472,412		2,858
Capital Markets 0.83%
London Stock Exchange Group plc		28,722		3,410
Equity Real Estate Investment Trusts 0.52%
UNITE Group plc (The)*		161,468		2,118
Insurance 0.88%
Prudential plc		225,769		3,612
Personal Products 0.68%
Unilever plc		47,632		2,775

			U.S. $ Fair
			Value
Investments	Shares		(000)
United Kingdom (continued)
Pharmaceuticals 1.20%
AstraZeneca plc		48,120	$	4,909
Total United Kingdom				19,682
United States 1.65%
Pharmaceuticals 0.64%
Horizon Therapeutics Plc*		36,023		2,611
Trading Companies & Distributors 1.01%
Ferguson plc		35,561		4,129
Total United States				6,740
Total Common Stocks (cost $311,044,003)				409,655
Total Investments in Securities 100.01% (cost $311,044,003)				409,655
Liabilities in Excess of Cash, Foreign Cash and Other Assets (0.01)%				(25	)
Net Assets 100.00%			$	409,630

ADR	American Depositary Receipt.
*	Non-income producing security.
†	Security was purchased pursuant to Rule 144A under the Securities Act of 1933 and, unless registered under such Act or exempted from registration, may only be resold to qualified institutional buyers. At January 31, 2021, the total value of Rule 144A securities was $11,032, which represents 2.69% of net assets.

See Notes to Schedule of Investments. 31

Schedule of Investments (unaudited)(concluded)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL EQUITY FUND January 31, 2021

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund's investments carried at fair value⁽¹⁾:

	Level 1		Level 2		Level 3		Total
Investment Type(2)	(000)		(000)		(000)		(000)
Common Stocks
Brazil	$	2,435	$	–	$	–	$	2,435
Canada		11,032		326		–		11,358
Chile		2,045		–		–		2,045
China		13,833		30,528		–		44,361
France		4,130		39,844		–		43,974
India		7,042		–		–		7,042
Mexico		4,206		–		–		4,206
Poland		2,163		–		–		2,163
Taiwan		6,963		10,965		–		17,928
United States		2,611		4,129		–		6,740
Remaining Countries		–		267,403		–		267,403
Total	$	56,460	$	353,195	$	–	$	409,655

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each industry and identification of foreign issuers and/or geography. The table above is presented by Investment Type. Industries are presented within an Investment Type should such Investment Type include securities classified as two or more levels within the three-tier fair value hierarchy.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund’s net assets.

32 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL OPPORTUNITIES FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
COMMON STOCKS 99.60%
Australia 4.05%
Auto Components 0.86%
GUD Holdings Ltd.		424,273	$	3,848
Diversified Financial Services 0.41%
Omni Bridgeway Ltd.		613,421		1,841
Electric: Utilities 1.09%
AusNet Services		3,732,260		4,913
Food Products 1.04%
Costa Group Holdings Ltd.		1,563,931		4,661
Professional Services 0.65%
IPH Ltd.		609,489		2,937
Total Australia				18,200
Austria 3.24%
Banks 1.00%
BAWAG Group AG*†		102,833		4,471
Electronic Equipment, Instruments & Components 1.01%
AT&S Austria Technologie & Systemtechnik AG		142,848		4,544
Machinery 1.23%
ANDRITZ AG		116,337		5,526
Total Austria				14,541
Belgium 1.06%
Equity Real Estate Investment Trusts 0.56%
Warehouses De Pauw CVA		69,751		2,505
Wireless Telecommunication Services 0.50%
Orange Belgium SA		84,160		2,270
Total Belgium				4,775

			U.S. $ Fair
			Value
Investments	Shares		(000)
Canada 1.97%
Aerospace & Defense 0.98%
CAE, Inc.		195,700	$	4,421
Paper & Forest Products 0.99%
Interfor Corp.*		238,600		4,447
Total Canada				8,868
Chile 0.92%
Metals & Mining
Lundin Mining Corp.		465,000		4,145
China 2.13%
Biotechnology 0.83%
I-Mab ADR*		68,511		3,726
Marine 1.30%
SITC International Holdings Co. Ltd.		2,552,000		5,850
Total China				9,576
Denmark 0.48%
Machinery
FLSmidth & Co. A/S*		61,490		2,149
France 1.82%
Construction Materials 0.72%
Vicat SA		75,301		3,240
Health Care Providers & Services 1.10%
Korian SA*		133,516		4,933
Total France				8,173
Germany 7.35%
Biotechnology 1.06%
MorphoSys AG*		39,921		4,767

See Notes to Schedule of Investments. 33

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL OPPORTUNITIES FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
Germany (continued)
Industrial Conglomerates 2.07%
Rheinmetall AG		87,805	$	9,271
Life Sciences Tools & Services 0.68%
Gerresheimer AG		28,766		3,063
Media 0.87%
Stroeer SE & Co. KGaA		43,278		3,900
Real Estate Management & Development 1.29%
PATRIZIA AG		189,606		5,776
Semiconductors & Semiconductor Equipment 1.38%
Aixtron SE*		332,073		6,207
Total Germany				32,984
Hong Kong 5.55%
Building Products 1.24%
Xinyi Glass Holdings Ltd.		2,300,000		5,564
Consumer Finance 0.09%
Sun Hung Kai & Co., Ltd.		1,000,000		409
Hotels, Restaurants & Leisure 1.02%
Melco International Development Ltd.		2,635,000		4,598
Household Durables 0.52%
JS Global Lifestyle Co. Ltd.†		1,039,500		2,338
Pharmaceuticals 0.46%
SSY Group Ltd.		3,882,000		2,042
Real Estate Management & Development 0.46%
Kerry Properties Ltd.		798,000		2,065
Semiconductors & Semiconductor Equipment 1.05%
ASM Pacific Technology Ltd.		323,000		4,690

			U.S. $ Fair
			Value
Investments	Shares		(000)
Hong Kong (continued)
Textiles, Apparel & Luxury Goods 0.71%
Stella International Holdings Ltd.		2,701,432	$	3,195
Total Hong Kong				24,901
India 3.12%
Banks 1.41%
Federal Bank Ltd.*		6,412,504		6,342
Capital Markets 0.53%
UTI Asset Management Co. Ltd.		310,838		2,364
Information Technology Services 1.18%
Computer Age Management Services Ltd.		218,863		5,319
Total India				14,025
Ireland 1.90%
Health Care Providers & Services 1.35%
UDG Healthcare plc		545,876		6,087
Information Technology Services 0.55%
Keywords Studios plc*		65,870		2,459
Total Ireland				8,546
Israel 1.48%
Machinery
Marel HF†		1,012,550		6,636
Italy 5.64%
Auto Components 1.23%
Freni Brembo SpA*		405,707		5,515
Construction Materials 0.99%
Buzzi Unicem SpA		181,178		4,458

34 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL OPPORTUNITIES FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
Italy (continued)
Diversified Financial Services 1.73%
Banca Mediolanum SpA*		552,210	$	4,376
doValue SpA*†		281,190		3,392
				7,768
Textiles, Apparel & Luxury Goods 1.69%
Brunello Cucinelli SpA*		57,404		2,298
Salvatore Ferragamo SpA*		272,506		5,300
				7,598
Total Italy				25,339
Japan 20.30%
Auto Components 1.20%
FCC Co., Ltd.		337,100		5,409
Building Products 1.62%
Sanwa Holdings Corp.		636,300		7,254
Chemicals 1.13%
Kansai Paint Co., Ltd.		172,200		5,069
Construction & Engineering 1.39%
SHO-BOND Holdings Co. Ltd.		143,900		6,261
Distributors 1.04%
PALTAC Corp.		89,400		4,646
Electronic Equipment, Instruments & Components 2.08%
Azbil Corp.		87,300		4,446
Taiyo Yuden Co., Ltd.		83,400		4,893
				9,339
Entertainment 0.49%
Capcom Co., Ltd.		35,400		2,221
Equity Real Estate Investment Trusts 1.11%
GLP J-REIT		1,280		2,062
Nippon Prologis REIT, Inc.		890		2,901
				4,963

			U.S. $ Fair
			Value
Investments	Shares		(000)
Japan (continued)
Food Products 0.43%
Nichirei Corp.		67,000	$	1,941
Information Technology Services 1.35%
TIS, Inc.		273,500		6,082
Machinery 3.64%
CKD Corp.		229,300		5,210
DMG Mori Co., Ltd.		340,400		5,345
OSG Corp.		320,700		5,776
				16,331
Professional Services 1.38%
TechnoPro Holdings, Inc.		81,400		6,198
Software 0.88%
Money Forward, Inc.*		68,600		2,810
Plaid, Inc.*		35,071		1,152
				3,962
Specialty Retail 0.81%
Bic Camera, Inc.		336,400		3,638
Thrifts & Mortgage Finance 0.63%
Aruhi Corp.		171,400		2,824
Wireless Telecommunication Services 1.12%
Okinawa Cellular Telephone Co.		112,600		5,028
Total Japan				91,166
Mexico 1.13%
Banks
Banco Santander Mexico SA Institucion de Banca Multiple Grupo Financiero Santand		1,021,241		5,086
Netherlands 0.29%
Biotechnology
uniQure NV*		36,208		1,282

See Notes to Schedule of Investments. 35

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL OPPORTUNITIES FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
Norway 2.66%
Independent Power and Renewable Electricity Producer 1.09%
Scatec ASA†		129,202	$	4,889
Software 1.57%
LINK Mobility Group Holding ASA*		517,595		3,005
Pexip Holding ASA*(a)		422,614		4,043
				7,048
Total Norway				11,937
Portugal 1.42%
Multi-Utilities
REN - Redes Energeticas Nacionais SGPS SA		2,241,381		6,378
South Korea 2.91%
Food & Staples Retailing 0.78%
GS Retail Co., Ltd.		112,501		3,489
Semiconductors & Semiconductor Equipment 1.05%
WONIK IPS Co., Ltd.*		111,404		4,744
Software 1.08%
Douzone Bizon Co. Ltd.		54,522		4,857
Total South Korea				13,090
Spain 2.87%
Containers & Packaging 1.22%
Vidrala SA		49,969		5,494
Independent Power and Renewable Electricity Producer 0.58%
Solaria Energia y Medio Ambiente SA*		101,312		2,607
Professional Services 1.07%
Applus Services SA*		477,660		4,777
Total Spain				12,878

			U.S. $ Fair
			Value
Investments	Shares		(000)
Sweden 2.27%
Auto Components 0.53%
Dometic Group AB*†		171,935	$	2,373
Commercial Services & Supplies 1.22%
Loomis AB		212,471		5,451
Food & Staples Retailing 0.52%
Axfood AB		97,859		2,352
Total Sweden				10,176
Switzerland 4.88%
Airlines 0.47%
Wizz Air Holdings plc*†		35,545		2,121
Containers & Packaging 1.33%
SIG Combibloc Group AG*		250,701		5,950
Insurance 0.89%
Swiss Life Holding AG		8,790		4,008
Life Sciences Tools & Services 1.04%
Tecan Group AG		9,591		4,641
Machinery 1.15%
Sulzer AG		48,065		5,178
Total Switzerland				21,898
Taiwan 1.33%
Semiconductors & Semiconductor Equipment
Realtek Semiconductor Corp.		210,000		3,378
Visual Photonics Epitaxy Co., Ltd.		688,000		2,573
Total Taiwan				5,951
United Arab Emirates 0.31%
Information Technology Services
Network International Holdings plc*†		300,206		1,399

36 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL OPPORTUNITIES FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
United Kingdom 17.21%
Aerospace & Defense 0.74%
Senior plc*		2,558,219	$	3,342
Beverages 1.08%
Britvic plc		478,822		4,873
Capital Markets 1.21%
Man Group plc		2,714,523		5,419
Construction Materials 1.32%
Breedon Group plc*		5,064,149		5,912
Consumer Finance 0.73%
Arrow Global Group plc*		1,138,339		3,259
Equity Real Estate Investment Trusts 1.93%
Big Yellow Group PLC		224,755		3,391
UNITE Group plc (The)*		403,569		5,293
				8,684
Household Durables 0.51%
Focusrite PLC		157,136		2,271
Insurance 1.44%
Lancashire Holdings Ltd.		695,702		6,474
Internet & Direct Marketing Retail 1.27%
ASOS plc*		93,679		5,724
Machinery 0.79%
Concentric AB		163,095		3,561
Media 1.13%
S4 Capital plc*		748,827		5,079
Multi-Line Retail 0.81%
B&M European Value Retail SA		495,813		3,624
Pharmaceuticals 1.03%
Dechra Pharmaceuticals plc		94,121		4,640

			U.S. $ Fair
			Value
Investments	Shares		(000)
United Kingdom (continued)
Real Estate Management &Development 1.10%
Savills PLC*		343,141	$	4,928
Specialty Retail 0.86%
WH Smith plc		184,369		3,850
Trading Companies & Distributors 1.26%
Grafton Group plc		478,639		5,651
Total United Kingdom				77,291
United States 1.31%
Exchange- Traded Funds
VanEck Vectors Junior Gold Miners		117,180		5,868
Total Common Stocks (cost $379,840,543)				447,258
	Principal
	Amount
	(000)
SHORT-TERM INVESTMENTS 1.04%
Repurchase Agreement 1.03%
Repurchase Agreement dated 1/29/2021, 0.00% due 2/1/2021 with Fixed Income Clearing Corp. collateralized by $4,694,000 of U.S. Treasury Note at 0.125% due 07/15/2023; value: $4,691,293; proceeds: $4,599,305 (cost $4,599,305)	$	4,599		4,599

See Notes to Schedule of Investments. 37

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL OPPORTUNITIES FUND January 31, 2021

			U.S. $ Fair
			Value
Investments	Shares		(000)
Money Market Fund 0.01%
Fidelity Government Portfolio(b) (cost $47,972)		47,972	$	48
Time Deposit 0.00%
CitiBank N.A.(b) (cost $5,331)		5,331		5
Total Short-Term Investments (cost $4,652,608)				4,652
Total Investments in Securities 100.64% (cost $384,493,151)				451,910
Liabilities in Excess of Foreign Cash and Other Assets(c) (0.64)%				(2,871	)
Net Assets 100.00%			$	449,039

ADR	American Depositary Receipt.
REIT	Real Estate Investment Trust.
*	Non-income producing security.
†	Security was purchased pursuant to Rule 144A under the Securities Act of 1933 and, unless registered under such Act or exempted from registration, may only be resold to qualified institutional buyers. At January 31, 2021, the total value of Rule 144A securities was $27,618, which represents 6.15% of net assets.
(a)	All or a portion of this security is temporarily on loan to unaffiliated broker/dealers.
(b)	Security was purchased with the cash collateral from loaned securities.
(c)	Liabilities in Excess of Foreign Cash and Other Assets net unrealized appreciation on total return swaps as follows:

Open Total Return Swap Contracts at January 31, 2021:

Swap

Referenced

Referenced

Termination

Notional

Notional

Unrealized

Counterparty

Index*

Spread

Units

Position

Date

Amount

Value

Appreciation

Bank of America

MLEILAEN

1 Mo. LIBOR +.36%

94,118

Long

6/11/2021

$

7,131,321

$

7,155,513

$24,192

* Merrill Lynch Custom Basket Index.

38 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(concluded)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL OPPORTUNITIES FUND January 31, 2021

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund’s investments carried at fair value⁽¹⁾:

Investment Type(2)	Level 1 (000)		Level 2 (000)		Level 3 (000)		Total (000)
Common Stocks
Canada	$	8,868	$	–	$	–	$	8,868
Chile		4,145		–		–		4,145
China		3,726		5,850		–		9,576
France		3,240		4,933		–		8,173
Germany		3,063		29,921		–		32,984
Israel		6,636		–		–		6,636
Italy		3,392		21,947		–		25,339
Japan		1,152		90,014		–		91,166
Mexico		5,086		–		–		5,086
Netherlands		1,282		–		–		1,282
Norway		3,005		8,932		–		11,937
Portugal		6,378		–		–		6,378
Spain		5,494		7,384		–		12,878
Sweden		5,451		4,725		–		10,176
United Kingdom		16,604		60,687		–		77,291
United States		5,868		–		–		5,868
Remaining Countries		–		129,475		–		129,475
Short-Term Investments
Repurchase Agreement		–		4,599		–		4,599
Money Market Fund		48		–		–		48
Time Deposit		–		5		–		5
Total	$	83,438	$	368,472	$	–	$	451,910
Other Financial Instruments
Total Return Swap Contracts
Assets		–		24,192		–		24,192
Liabilities		–		–		–		–
Total	$	–	$	24,192	$	–	$	24,192

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each industry and identification of foreign issuers and/or geography. The table above is presented by Investment Type. Industries are presented within an Investment Type should such Investment Type include securities classified as two or more levels within the three-tier fair value hierarchy.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund's net assets.

See Notes to Schedule of Investments. 39

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL VALUE FUND January 31, 2021

Investments	Shares		U.S. $ Fair Value (000)
COMMON STOCKS 98.18%
Australia 5.38%
Banks 1.80%
National Australia Bank Ltd.		500,793	$	8,977
Capital Markets 0.65%
Macquarie Group Ltd.		32,627		3,254
Equity Real Estate Investment Trusts 0.72%
Goodman Group		268,834		3,618
Metals & Mining 2.21%
BHP Group Ltd.		332,110		11,075
Total Australia				26,924
Austria 1.45%
Banks
BAWAG Group AG*†		166,637		7,245
Belgium 1.41%
Beverages 0.76%
Anheuser-Busch InBev SA		60,463		3,795
Pharmaceuticals 0.65%
UCB SA		31,517		3,264
Total Belgium				7,059
Cambodia 0.55%
Hotels, Restaurants & Leisure
NagaCorp Ltd.		2,410,000		2,736
Canada 1.96%
Banks 0.98%
Royal Bank of Canada		60,800		4,921
Oil, Gas & Consumable Fuels 0.98%
Pembina Pipeline Corp.		185,333		4,879
Total Canada				9,800

Investments	Shares		U.S. $ Fair Value (000)
Chile 1.22%
Metals & Mining 0.79%
Lundin Mining Corp.		441,255	$	3,934
Water Utilities 0.43%
Aguas Andinas SA		7,164,165		2,174
Total Chile				6,108
China 2.80%
Construction Materials 0.98%
China Resources Cement Holdings Ltd.		4,440,000		4,894
Internet & Direct Marketing Retail 0.56%
Alibaba Group Holding Ltd. ADR*		11,005		2,793
Real Estate Management & Development 0.78%
Logan Group Co., Ltd.		2,640,000		3,941
Specialty Retail 0.48%
Topsports International Holdings Ltd.†		1,486,000		2,408
Total China				14,036
France 14.54%
Aerospace & Defense 1.85%
Safran SA*		31,673		3,982
Thales SA		58,568		5,255
				9,237
Banks 2.00%
Credit Agricole SA*		883,470		9,999
Building Products 1.67%
Cie de Saint-Gobain*		168,415		8,372
Construction & Engineering 0.96%
Vinci SA		51,977		4,820

40 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL VALUE FUND January 31, 2021

Investments	Shares		U.S. $ Fair Value (000)
France (continued)
Diversified Telecommunication Services 1.40%
Orange SA		597,816	$	7,016
Gas Utilities 0.83%
Rubis SCA		92,326		4,179
Insurance 1.63%
AXA SA		368,282		8,159
Multi-Utilities 1.84%
Engie SA*		592,580		9,196
Pharmaceuticals 2.36%
Sanofi		125,874		11,838
Total France				72,816
Germany 11.23%
Air Freight & Logistics 1.57%
Deutsche Post AG Registered Shares		159,140		7,861
Auto Components 1.62%
Continental AG		58,000		8,117
Automobiles 1.41%
Volkswagen AG		33,305		7,028
Chemicals 1.28%
BASF SE		83,016		6,416
Insurance 2.08%
Allianz SE Registered Shares		46,148		10,430
Machinery 0.81%
KION Group AG		47,107		4,067
Media 0.81%
Stroeer SE & Co. KGaA		45,152		4,068
Pharmaceuticals 0.71%
Merck KGaA		21,184		3,531

Investments	Shares		U.S. $ Fair Value (000)
Germany (continued)
Semiconductors & Semiconductor Equipment 0.94%
Infineon Technologies AG		117,006	$	4,688
Total Germany				56,206
Hong Kong 2.11%
Building Products 0.76%
Xinyi Glass Holdings Ltd.		1,568,000		3,793
Real Estate Management & Development 1.35%
Kerry Properties Ltd.		2,619,500		6,780
Total Hong Kong				10,573
India 0.86%
Oil, Gas & Consumable Fuels
Petronet LNG Ltd.		1,324,889		4,297
Italy 3.19%
Auto Components 0.90%
Freni Brembo SpA*		332,247		4,516
Electric: Utilities 1.32%
Enel SpA		665,034		6,596
Textiles, Apparel & Luxury Goods 0.97%
Moncler SpA*		86,401		4,869
Total Italy				15,981
Japan 17.33%
Auto Components 1.70%
Denso Corp.		153,500		8,532
Banks 1.79%
Sumitomo Mitsui Financial Group, Inc.		288,700		8,969
Beverages 1.63%
Asahi Group Holdings Ltd.		202,600		8,180

See Notes to Schedule of Investments. 41

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL VALUE FUND January 31, 2021

Investments	Shares		U.S. $ Fair Value (000)
Japan (continued)
Building Products 1.72%
Sanwa Holdings Corp.		755,300	$	8,611
Diversified Financial Services 1.69%
ORIX Corp.		526,600		8,450
Electrical Equipment 1.04%
Fuji Electric Co., Ltd.		130,200		5,188
Electronic Equipment, Instruments & Components 3.47%
Hitachi Ltd.		198,000		8,157
TDK Corp.		57,000		9,216
				17,373
Household Durables 1.69%
Sony Corp.		88,300		8,451
Trading Companies & Distributors 1.70%
ITOCHU Corp.		296,800		8,500
Wireless Telecommunication Services 0.90%
SoftBank Group Corp.		58,300		4,517
Total Japan				86,771
Macau 0.93%
Hotels, Restaurants & Leisure
Sands China Ltd.		1,178,000		4,678
Mexico 1.48%
Banks 0.73%
Grupo Financiero Banorte
SAB de CV*		737,066		3,652
Transportation Infrastructure 0.75%
Grupo Aeroportuario del Pacifico SAB de CV*		374,500		3,775
Total Mexico				7,427

Investments	Shares		U.S. $ Fair Value (000)
Netherlands 2.29%
Oil, Gas & Consumable Fuels
Royal Dutch Shell plc Class A ADR(a)		310,117	$	11,440
Russia 0.99%
Oil, Gas & Consumable Fuels
Lukoil PJSC ADR		69,826		4,942
South Africa 1.88%
Metals & Mining
Anglo American plc		286,808		9,434
South Korea 2.19%
Technology Hardware, Storage & Peripherals
Samsung Electronics Co., Ltd.		149,666		10,942
Sweden 3.04%
Commercial Services & Supplies 0.98%
Loomis AB		192,198		4,931
Machinery 0.97%
Sandvik AB*		195,782		4,876
Oil, Gas & Consumable Fuels 1.09%
Lundin Energy AB		200,147		5,437
Total Sweden				15,244
Switzerland 6.92%
Capital Markets 2.38%
UBS Group AG		828,220		11,938
Insurance 2.22%
Swiss Life Holding AG*		10,200		4,651
Zurich Financial Services AG		16,120		6,445
				11,096

42 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL VALUE FUND January 31, 2021

Investments	Shares		U.S. $ Fair Value (000)
Switzerland (continued)
Pharmaceuticals 2.32%
Novartis AG Registered Shares		69,652	$	6,306
Roche Holding AG		15,310		5,284
				11,590
Total Switzerland				34,624
United Kingdom 12.92%
Banks 1.62%
Standard Chartered plc*		1,343,495		8,129
Electric: Utilities 0.93%
SSE plc		228,919		4,637
Equity Real Estate Investment Trusts 0.86%
UNITE Group plc (The)*		326,393		4,281
Hotels, Restaurants & Leisure 0.66%
Entain PLC*		195,149		3,303
Household Durables 1.12%
Persimmon plc		161,429		5,619
Insurance 2.20%
Beazley plc		850,545		3,620
Prudential plc		461,465		7,383
				11,003
Multi-Utilities 0.90%
National Grid plc		389,183		4,521
Pharmaceuticals 1.08%
AstraZeneca plc		53,163		5,423
Tobacco 2.42%
British American Tobacco plc		211,695		7,692
Imperial Brands plc		221,141		4,439
				12,131

Investments	Shares		U.S. $ Fair Value (000)
United Kingdom (continued)
Trading Companies & Distributors 1.13%
Ashtead Group plc		112,369	$	5,640
Total United Kingdom				64,687
United States 1.51%
Auto Components
Lear Corp.		50,212		7,570
Total Common Stocks (cost $431,092,475)				491,540
	Principal Amount (000)
SHORT-TERM INVESTMENTS 1.14%
Repurchase Agreement 0.99%
Repurchase Agreement dated 1/29/2021, 0.00% due 2/1/2021 with Fixed Income Clearing Corp. collateralized by $5,065,200 of U.S. Treasury Note at 0.125% due 07/15/2023; value: $5,062,279; proceeds: $4,962,922 (cost $4,962,922)	$	4,963		4,963

See Notes to Schedule of Investments. 43

Schedule of Investments (unaudited)(concluded)

LORD ABBETT SECURITIES TRUST – INTERNATIONAL VALUE FUND January 31, 2021

Investments	Shares		U.S. $ Fair Value (000)
Money Market Fund 0.14%
Fidelity Government Portfolio(b) (cost $678,255)		678,255	$	678
Time Deposit 0.01%
CitiBank N.A.(b) (cost $75,362)		75,362		76
Total Investments in Securities 99.32% (cost $436,809,014)				497,257
Other Assets in Excess of Liabilities 0.68%				3,415
Net Assets 100.00%			$	500,672

ADR	American Depositary Receipt.
*	Non-income producing security.
†	Security was purchased pursuant to Rule 144A under the Securities Act of 1933 and, unless registered under such Act or exempted from registration, may only be resold to qualified institutional buyers. At January 31, 2021, the total value of Rule 144A securities was $9,653, which represents 1.93% of net assets.
(a)	All or a portion of this security is temporarily on loan to unaffiliated broker/dealers.
(b)	Security was purchased with the cash collateral from loaned securities.

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund’s investments carried at fair value⁽¹⁾:

Investment Type(2)	Level 1 (000)		Level 2 (000)		Level 3 (000)		Total (000)
Common Stocks
Canada	$	9,800	$	–	$	–	$	9,800
Chile		6,108		–		–		6,108
China		2,793		11,243		–		14,036
Mexico		7,427		–		–		7,427
Netherlands		11,440		–		–		11,440
Sweden		4,931		10,313		–		15,244
United States		7,570		–		–		7,570
Remaining Countries		–		419,915		–		419,915
Short-Term Investments
Repurchase Agreement		–		4,963		–		4,963
Money Market Fund		678		–		–		678
Time Deposit		–		76		–		76
Total	$	50,747	$	446,510	$	–	$	497,257

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each industry and identification of foreign issuers and/or geography. The table above is presented by Investment Type. Industries are presented within an Investment Type should such Investment Type include securities classified as two or more levels within the three-tier fair value hierarchy.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund's net assets.

44 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – MICRO CAP GROWTH FUND January 31, 2021

Investments	Shares		Fair Value (000)
COMMON STOCKS 91.53%
Air Freight & Logistics 0.57%
Atlas Air Worldwide Holdings, Inc.*		28,377	$	1,470
Auto Components 0.84%
Gentherm, Inc.*		35,648		2,184
Banks 1.51%
Silvergate Capital Corp.*		42,066		3,915
Beverages 1.26%
Celsius Holdings, Inc.*(a)		61,610		3,290
Biotechnology 14.40%
Adaptimmune Therapeutics plc ADR*		141,129		771
Beam Therapeutics, Inc.*(a)		38,077		3,672
CareDx, Inc.*		41,570		3,177
Constellation Pharmaceuticals, Inc.*		71,406		2,354
Insmed, Inc.*		59,543		2,238
Karuna Therapeutics, Inc.*		15,390		1,527
Krystal Biotech, Inc.*		25,353		1,767
Myovant Sciences Ltd. (United Kingdom)*(b)		113,285		2,638
Rigel Pharmaceuticals, Inc.*		515,972		1,878
Rocket Pharmaceuticals, Inc.*		54,616		3,008
Scholar Rock Holding Corp.*		54,456		3,249
Seres Therapeutics, Inc.*		71,813		1,706
Stoke Therapeutics, Inc.*		18,577		1,135
TG Therapeutics, Inc.*		45,428		2,193
Trillium Therapeutics, Inc. (Canada)*(a)(b)		135,932		1,788
Turning Point Therapeutics, Inc.*		17,790		2,232
Veracyte, Inc.*		37,555		2,129
Total				37,462
Commercial Services & Supplies 1.07%
Montrose Environmental Group, Inc.*		75,001		2,774

Investments	Shares		Fair Value (000)
Communications Equipment 2.78%
AudioCodes Ltd. (Israel)(b)		32,354	$	971
Calix, Inc.*		207,353		6,262
Total				7,233
Construction & Engineering 0.77%
Ameresco, Inc. Class A*		35,519		1,992
Electrical Equipment 1.00%
TPI Composites, Inc.*		43,507		2,606
Electronic Equipment, Instruments & Components 1.78%
908 Devices, Inc.*		35,751		1,970
nLight, Inc.*		84,012		2,662
Total				4,632
Health Care Equipment & Supplies 10.65%
Axonics Modulation Technologies, Inc.*		71,646		3,704
CryoPort, Inc.*(a)		76,763		5,235
GenMark Diagnostics, Inc.*		132,417		1,829
Inari Medical, Inc.*		18,195		1,736
OrthoPediatrics Corp.*		57,067		2,635
Outset Medical, Inc.*		27,583		1,430
Pulmonx Corp.*		43,979		2,495
Shockwave Medical, Inc.*		42,121		4,888
SI-BONE, Inc.*		127,709		3,739
Total				27,691
Health Care Providers & Services 2.02%
Castle Biosciences, Inc.*		49,992		3,341
Ontrak, Inc.*(a)		24,084		1,910
Total				5,251
Health Care Technology 2.69%
Health Catalyst, Inc.*		36,561		1,816
Inspire Medical Systems, Inc.*		15,264		3,076
Simulations Plus, Inc.		26,427		2,092
Total				6,984

See Notes to Schedule of Investments. 45

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – MICRO CAP GROWTH FUND January 31, 2021

Investments	Shares		Fair Value (000)
Hotels, Restaurants & Leisure 1.08%
Golden Nugget Online
Gaming, Inc.*(a)		54,358	$	970
Papa John's International, Inc.		18,081		1,850
Total				2,820
Household Durables 3.27%
LGI Homes, Inc.*		30,010		3,202
Sonos, Inc.*		203,229		5,315
Total				8,517
Household Products 0.86%
Central Garden & Pet Co.*		53,089		2,245
Industrial Conglomerates 1.01%
Raven Industries, Inc.		81,229		2,621
Insurance 1.23%
Trupanion, Inc.*		28,497		3,197
Internet & Direct Marketing Retail 5.01%
Magnite, Inc.*		195,619		6,776
Overstock.com, Inc.*		31,993		2,483
PubMatic, Inc.*(a)		95,205		3,784
Total				13,043
Internet Software & Services 1.48%
Cardlytics, Inc.*		31,400		3,839
Leisure Products 1.35%
Malibu Boats, Inc. Class A*		50,268		3,524
Life Sciences Tools & Services 4.76%
NanoString Technologies, Inc.*		45,424		3,181
Pacific Biosciences of California, Inc.*		116,971		3,784
Quanterix Corp.*		79,863		5,170
Seer, Inc.*		3,813		238
Total				12,373
Machinery 6.08%
Chart Industries, Inc.*		31,643		3,801
Evoqua Water Technologies Corp.*		82,975		2,261

Investments	Shares		Fair Value (000)
Machinery (continued)
Hydrofarm Holdings Group, Inc.*		23,231	$	1,754
Shyft Group, Inc. (The)		98,654		2,979
SPX Corp.*		34,648		1,792
Westport Innovations, Inc. (Canada)*(a)(b)		433,617		3,226
Total				15,813
Personal Products 0.87%
elf Beauty, Inc.*		104,472		2,273
Pharmaceuticals 0.93%
Intra-Cellular Therapies, Inc.*		41,501		1,334
Pliant Therapeutics, Inc.*(a)		43,746		1,077
Total				2,411
Professional Services 0.66%
Willdan Group, Inc.*		38,146		1,705
Real Estate Management & Development 1.29%
eXp World Holdings, Inc.*		31,395		3,346
Semiconductors & Semiconductor Equipment 4.36%
CEVA, Inc.*		75,218		4,422
Ichor Holdings Ltd.*		90,154		3,255
Impinj, Inc.*		22,972		1,217
Rambus, Inc.*		129,050		2,451
Total				11,345
Software 12.06%
Agilysys, Inc.*		146,213		5,379
Cerence, Inc.*		66,362		7,427
Digital Turbine, Inc.*		98,878		5,657
fuboTV, Inc.*(a)		44,952		1,899
Sprout Social, Inc. Class A*		76,421		5,044
Telos Corp.*		123,377		4,355
Upland Software, Inc.*		33,911		1,617
Total				31,378

46 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(concluded)

LORD ABBETT SECURITIES TRUST – MICRO CAP GROWTH FUND January 31, 2021

Investments	Shares		Fair Value (000)
Specialty Retail 2.29%
National Vision Holdings, Inc.*		23,803	$	1,104
Sleep Number Corp.*		44,978		4,846
Total				5,950
Tobacco 0.98%
Turning Point Brands, Inc.		54,371		2,561
Trading Companies & Distributors 0.62%
Rush Enterprises, Inc. Class A		38,636		1,622
Total Common Stocks (cost $162,697,698)				238,067
	Principal Amount (000)
SHORT-TERM INVESTMENTS 10.09%
Repurchase Agreement 4.30%
Repurchase Agreement dated 1/29/2021, 0.00% due 2/1/2021 with Fixed Income Clearing Corp. collateralized by $11,411,300 of U.S. Treasury Note at . 125% due 7/15/2023; value: $11,404,720; proceeds: $11,181,085 (cost $11,181,085)	$	11,181		11,181

Investments	Shares		Fair Value (000)
Money Market Fund 5.21%
Fidelity Government Portfolio(c) (cost $13,557,606)		13,557,606	$	13,558
Time Deposit 0.58%
CitiBank N.A.(c) (cost $1,506,401)		1,506,401		1,506
Total Short-Term Investments (cost $26,245,092)				26,245
Total Investments in Securities 101.62% (cost $188,942,790)				264,312
Liabilities in Excess of Other Assets (1.62)%				(4,213	)
Net Assets 100.00%			$	260,099

ADR	American Depositary Receipt.
*	Non-income producing security.
(a)	All or a portion of this security is temporarily on loan to unaffiliated broker/dealers.
(b)	Foreign security traded in U.S. dollars.
(c)	Security was purchased with the cash collateral from loaned securities.

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund’s investments carried at fair value⁽¹⁾:

Investment Type(2)	Level 1 (000)		Level 2 (000)		Level 3 (000)		Total (000)
Common Stocks	$	238,067	$	–	$	–	$	238,067
Short-Term Investments
Repurchase Agreement		–		11,181		–		11,181
Money Market Fund		13,558		–		–		13,558
Time Deposit		–		1,506		–		1,506
Total	$	251,625	$	12,687	$	–	$	264,312

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each industry and identification of foreign issuers and/or geography.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund's net assets.

See Notes to Schedule of Investments. 47

Schedule of Investments (unaudited)

LORD ABBETT SECURITIES TRUST – VALUE OPPORTUNITIES FUND January 31, 2021

Investments	Shares		Fair Value (000)
COMMON STOCKS 99.35%
Aerospace & Defense 1.17%
Hexcel Corp.		411,873	$	17,982
Auto Components 3.79%
Dorman Products, Inc.*		221,370		20,107
LCI Industries		120,545		15,596
Lear Corp.		150,141		22,635
Total				58,338
Banks 7.18%
Bank of Hawaii Corp.		214,490		16,771
East West Bancorp, Inc.		462,735		27,737
Pacific Premier Bancorp, Inc.		469,357		15,606
Signature Bank		23,973		3,960
SVB Financial Group*		43,984		19,255
Western Alliance Bancorp		398,255		27,153
Total				110,482
Beverages 0.88%
Primo Water Corp.		873,468		13,495
Building Products 5.84%
A.O. Smith Corp.		449,242		24,394
Allegion plc (Ireland)(a)		143,087		15,312
Masonite International Corp.*		256,024		25,474
Simpson Manufacturing Co., Inc.		267,896		24,646
Total				89,826
Capital Markets 0.97%
Moelis & Co. Class A		300,756		14,951
Chemicals 4.69%
Avient Corp.		579,422		22,267
Axalta Coating Systems Ltd.*		874,358		23,599
Valvoline, Inc.		1,110,612		26,366
Total				72,232

Investments	Shares		Fair Value (000)
Commercial Services & Supplies 0.67%
Driven Brands Holdings, Inc.*		367,468	$	10,326
Consumer Finance 1.81%
Discover Financial Services		334,109		27,912
Containers & Packaging 1.71%
Avery Dennison Corp.		174,903		26,388
Electric: Utilities 2.07%
IDACORP, Inc.		184,982		16,334
Portland General Electric Co.		368,767		15,595
Total				31,929
Electrical Equipment 1.48%
Generac Holdings, Inc.*		92,298		22,744
Electronic Equipment, Instruments & Components 1.73%
Littelfuse, Inc.		109,740		26,707
Equity Real Estate Investment Trusts 4.83%
Alexandria Real Estate Equities, Inc.		97,218		16,246
CoreSite Realty Corp.		133,721		17,977
First Industrial Realty Trust, Inc.		549,236		22,321
Sunstone Hotel Investors, Inc.		1,661,300		17,776
Total				74,320
Health Care Equipment & Supplies 5.40%
Cooper Cos., Inc. (The)		43,812		15,949
Hill-Rom Holdings, Inc.		229,098		22,003
NuVasive, Inc.*		332,785		17,884
STERIS plc		146,084		27,334
Total				83,170
Health Care Providers & Services 3.49%
Covetrus, Inc.*		452,773		15,426
Encompass Health Corp.		193,027		15,519
Molina Healthcare, Inc.*		106,651		22,782
Total				53,727

48 See Notes to Schedule of Investments.

Schedule of Investments (unaudited)(continued)

LORD ABBETT SECURITIES TRUST – VALUE OPPORTUNITIES FUND January 31, 2021

Investments	Shares		Fair Value (000)
Hotels, Restaurants & Leisure 1.42%
Caesars Entertainment, Inc.*		310,500	$	21,856
Household Durables 5.48%
Helen of Troy Ltd.*		74,173		18,117
Leggett & Platt, Inc.		503,100		20,627
Purple Innovation, Inc.*		742,715		25,282
Sonos, Inc.*		777,150		20,322
Total				84,348
Industrial Conglomerates 1.56%
Carlisle Cos., Inc.		165,188		23,941
Information Technology Services 5.17%
Booz Allen Hamilton Holding Corp.		281,361		23,964
EPAM Systems, Inc.*		24,587		8,468
Euronet Worldwide, Inc.*		238,604		29,816
Jack Henry & Associates, Inc. 119,928				17,364
Total				79,612
Insurance 3.77%
Globe Life, Inc.		165,664		14,974
RenaissanceRe Holdings Ltd.		130,748		19,670
Stewart Information Services Corp.		504,960		23,420
Total				58,064
Internet Software & Services 2.03%
TechTarget, Inc.*		417,871		31,215
Leisure Products 1.17%
Malibu Boats, Inc. Class A*		255,808		17,935
Life Sciences Tools & Services 6.56%
Bio-Techne Corp.		76,837		24,965
Charles River Laboratories International, Inc.*		120,894		31,318
ICON plc (Ireland)*(a)		87,017		17,735
PerkinElmer, Inc.		183,229		26,947
Total				100,965

Investments	Shares		Fair Value (000)
Machinery 4.15%
Allison Transmission Holdings, Inc.		637,526	$	25,947
Columbus McKinnon Corp/NY.		259,959		11,228
Crane Co.		353,195		26,730
Total				63,905
Metals & Mining 1.48%
Reliance Steel & Aluminum Co.		196,229		22,778
Oil, Gas & Consumable Fuels 2.25%
Cabot Oil & Gas Corp.		667,000		12,226
Par Pacific Holdings, Inc.*		795,269		10,561
Pioneer Natural Resources Co. 97,419				11,778
Total				34,565
Real Estate Management & Development 0.99%
Marcus & Millichap, Inc.*		427,800		15,285
Road & Rail 3.00%
Landstar System, Inc.		172,200		24,005
Saia, Inc.*		125,351		22,156
Total				46,161
Semiconductors & Semiconductor Equipment 6.13%
Advanced Energy Industries, Inc.*		139,843		14,345
Entegris, Inc.		344,959		33,941
Monolithic Power Systems, Inc.		63,667		22,620
Teradyne, Inc.		206,133		23,392
Total				94,298
Software 3.23%
Aspen Technology, Inc.*		180,139		24,121
Fair Isaac Corp.*		56,968		25,642
Total				49,763

See Notes to Schedule of Investments. 49

Schedule of Investments (unaudited)(concluded)

LORD ABBETT SECURITIES TRUST – VALUE OPPORTUNITIES FUND January 31, 2021

Investments	Shares		Fair Value (000)
Specialty Retail 2.67%
Burlington Stores, Inc.*		64,443	$	16,040
Williams-Sonoma, Inc.		194,666		25,096
Total				41,136
Tobacco 0.58%
Turning Point Brands, Inc.		189,097		8,907
Total Common Stocks (cost $1,143,256,002)				1,529,263

Investments	Principal Amount (000)		Fair Value (000)
SHORT-TERM INVESTMENT 0.96%
Repurchase Agreement
Repurchase Agreement dated 1/29/2021, 0.00% due 2/1/2021 with Fixed Income Clearing Corp. collateralized by $14,611,700 of U.S. Treasury Note at 1.25% due 7/31/2023; value: $15,103,282; proceeds: $14,807,099 (cost $14,807,099)	$	14,807	$	14,807
Total Investments in Securities 100.31% (cost $1,158,063,101)				1,544,070
Liabilities in Excess of Other Assets (0.31)%				(4,794	)
Net Assets 100.00%			$	1,539,276

*	Non-income producing security.
(a)	Foreign security traded in U.S. dollars.

The following is a summary of the inputs used as of January 31, 2021 in valuing the Fund’s investments carried at fair value⁽¹⁾:

Investment Type(2)	Level 1 (000)		Level 2 (000)		Level 3 (000)		Total (000)
Common Stocks	$	1,529,263	$	–	$	–	$	1,529,263
Short-Term Investment
Repurchase Agreement		–		14,807		–		14,807
Total	$	1,529,263	$	14,807	$	–	$	1,544,070

(1)	Refer to Note 2(b) for a description of fair value measurements and the three-tier hierarchy of inputs.
(2)	See Schedule of Investments for fair values in each industry and identification of foreign issuers and/or geography.

A reconciliation of Level 3 investments is presented when the Fund has a material amount of Level 3 investments at the beginning or end of the period in relation to the Fund's net assets.

50 See Notes to Schedule of Investments.

Notes to Financial Statements (unaudited)

1. ORGANIZATION  

Lord Abbett Securities Trust (the “Trust”) is registered under the Investment Company Act of 1940, as amended (the “Act”), as a diversified, open-end management investment company and was organized as a Delaware statutory trust on February 26, 1993. The Trust consists of the following fourteen funds (separately, a “Fund” and collectively, the “Funds”): Lord Abbett Alpha Strategy Fund (“Alpha Strategy Fund”), Lord Abbett Durable Growth Fund (“Durable Growth Fund”), Lord Abbett Focused Growth Fund (“Focused Growth Fund”), Lord Abbett Focused Large Cap Value Fund (“Focused Large Cap Value Fund”), Lord Abbett Focused Small Cap Value (“Focused Small Cap Value Fund”), Lord Abbett Fundamental Equity Fund (“Fundamental Equity Fund”), Lord Abbett Global Equity Research Fund (“Global Equity Research Fund”), Lord Abbett Growth Leaders Fund (“Growth Leaders Fund”), Lord Abbett Health Care Fund (“Health Care Fund”), Lord Abbett International Equity Fund (“International Equity Fund”), Lord Abbett International Opportunities Fund (“International Opportunities Fund”), Lord Abbett International Value Fund (“International Value Fund”), Lord Abbett Micro-Cap Growth Fund (“Micro Cap Growth Fund”) and Lord Abbett Value Opportunities Fund (“Value Opportunities Fund”).

Each of Alpha Strategy Fund’s, Focused Large Cap Value Fund’s, Focused Small Cap Value Fund’s, Global Equity Research Fund’s, Health Care Fund’s, International Equity Fund’s, International Opportunities Fund’s, and Value Opportunities Fund’s investment objective is to seek long- term capital appreciation. Alpha Strategy Fund invests principally in other funds (“Underlying Funds”) managed by Lord, Abbett & Co. LLC (“Lord Abbett”). Fundamental Equity Fund’s investment objective is long- term growth of capital and income without excessive fluctuations in market value. Durable Growth Fund, Growth Leaders Fund’s and Focused Growth Fund’s investment objective is to seek capital appreciation. International Value Fund’s investment objective is to seek a high level of total return.

2. SIGNIFICANT ACCOUNTING POLICIES  

(a)

Investment Valuation-Under procedures approved by the Funds’ Board of Trustees (the “Board”), Lord, Abbett & Co. LLC (“Lord Abbett”), the Fund’s investment manager, has formed a Pricing Committee to administer the pricing and valuation of portfolio investments and to ensure that prices utilized reasonably reflect fair value. Among other things, these procedures allow the Funds to utilize independent pricing services, quotations from securities and financial instrument dealers and other market sources to determine fair value.

Securities actively traded on any recognized U.S. or non-U.S. exchange or on The NASDAQ Stock Market LLC are valued at the last sale price or official closing price on the exchange or system on which they are principally traded. Events occurring after the close of trading on non-U.S. exchanges may result in adjustments to the valuation of foreign securities to reflect their fair value as of the close of regular trading on the New York Stock Exchange (“NYSE”). Each Fund may utilize an independent fair valuation service in adjusting the valuations of foreign securities. Unlisted equity securities are valued at the last quoted sale price or, if no sale price is available, at the mean between the most recently quoted bid and asked prices. Exchange traded options and futures contracts are valued at the last quoted sale price in the market where they are principally traded. If no sale has occurred, the mean between the most recently quoted bid and asked prices is used. Swaps are valued daily using independent pricing services or quotations from broker/dealers to the extent available. Investments in the

51

Notes to Financial Statements (unaudited)(continued)

	Underlying Funds are valued at their net asset value (“NAV”) each business day at the close of regular trading on the NYSE, normally 4:00 p.m. Eastern time.
	Securities for which prices are not readily available are valued at fair value as determined by the Pricing Committee. The Pricing Committee considers a number of factors, including observable and unobservable inputs, when arriving at fair value. The Pricing Committee may use related or comparable assets or liabilities, recent transactions, market multiples, book values and other relevant information to determine the fair value of portfolio investments. The Board or a designated committee thereof regularly reviews fair value determinations made by the Pricing Committee and may employ techniques such as reviewing related market activity, reviewing inputs and assumptions, and retrospectively comparing prices of subsequent purchases and sales transactions to fair value determinations made by the Pricing Committee.
	Short-term securities with 60 days or less remaining to maturity are valued using the amortized cost method, which approximates fair value.
(b)	Fair Value Measurements-Fair value is defined as the price that each Fund would receive upon selling an investment or transferring a liability in an orderly transaction to an independent buyer in the principal or most advantageous market of 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. Inputs refer broadly to the assumptions that market participants would use in pricing the asset or liability, including assumptions about risk - for example, the risk inherent in a particular valuation technique used to measure fair value (such as a pricing model) and/or the risk inherent in the inputs to the valuation technique. Inputs may be observable or unobservable. 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 three-tier hierarchy classification is determined based on the lowest level of inputs that is significant to the fair value measurement, and is summarized in the three broad Levels listed below:

·	Level 1 –	unadjusted quoted prices in active markets for identical investments;
·	Level 2 –	other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.); and
·	Level 3 –	significant unobservable inputs (including each Fund’s own assumptions in determining the fair value of investments).

A summary of inputs used in valuing each Fund’s investments and other financial instruments as of January 31, 2021 and, if applicable, Level 3 rollforwards for the period then ended is included in each Fund’s Schedule of Investments.

Changes in valuation techniques may result in transfers into or out of an assigned level within the three-tier hierarchy. The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities.

52

Notes to Financial Statements (unaudited)(continued)

3. FEDERAL TAX INFORMATION  

It is the policy of the Fund to meet the requirements of Subchapter M of the Internal Revenue Code applicable to regulated investment companies and to distribute substantially all taxable income and capital gains to its shareholders. Therefore, no income tax provision is required.

Each Fund files U.S. federal and various state and local tax returns. No income tax returns are currently under examination. The statute of limitations on the Fund’s filed U.S. federal tax returns remains open generally three years after the filing of the tax return. The statutes of limitations on the Fund’s, state and local tax returns may remain open for an additional year depending upon the jurisdiction.

4. SECURITIES LENDING AGREEMENT  

The Fund has established a securities lending agreement with Citibank, N.A. (the “agent”) for the lending of securities to qualified brokers in exchange for securities or cash collateral equal to at least the market value of securities loaned, plus interest, if applicable. Cash collateral is invested in an approved money market fund. In accordance with the Fund’s securities lending agreement, the market value of securities on loan is determined each day at the close of business and any additional collateral required to cover the value of securities on loan is delivered to the Fund on the next business day. As with other extensions of credit, the Fund may experience a delay in the recovery of its securities or incur a loss should the borrower of the securities breach its agreement with the Fund or become insolvent at a time when the collateral is insufficient to cover the cost of repurchasing securities on loan.

The initial collateral received by the Fund is required to have a value equal to at least 100% of the market value of the securities loaned. The collateral must be marked- to- market daily to cover increases in the market value of the securities loaned (or potentially a decline in the value of the collateral). In general, the risk of borrower default will be borne by the Fund’s agent; the Fund will bear the risk of loss with respect to the investment of the cash collateral. The advantage of such loans is that the Fund continues to receive income on loaned securities while receiving a portion of any securities lending fees and earning returns on the cash amounts which may be reinvested for the purchase of investments in securities.

As of January 31, 2021, the market value of securities loaned and collateral received for the Funds were as follows:

Funds	Market Value of Securities Loaned		Collateral Received
Growth Leaders Fund	$	1,638,485	$	1,772,287
Health Care Fund		31,200		33,625
International Opportunities Fund		49,506		53,303
International Value Fund		705,484		753,617
Micro Cap Growth Fund		15,006,721		15,064,007

53

Notes to Financial Statements (unaudited)(concluded)

5. TRANSACTIONS WITH AFFILIATED ISSUERS  

An affiliated issuer is one in which a Fund has ownership of at least 5% of the outstanding voting securities of the underlying issuer at any point during the fiscal year or any company which is under common ownership or control. Alpha Strategy Fund had the following transactions with affiliated issuers (i.e. the Underlying Funds) during the period ended January 31, 2021:

Alpha Strategy Fund

Affiliated Issuer	Balance of Shares Held at 10/31/2020		Gross Additions		Gross Sales			Balance of Shares Held at 1/31/2021		Fair Value at 1/31/2021		Net Realized Gain (Loss) 11/1/2020 to 1/31/2021			Dividend Income 11/1/2020 to 1/31/2021		Change in Appreciation (Depreciation) 11/1/2020 to 1/31/2021
Lord Abbett Developing Growth Fund, Inc. - Class I		3,985,867		334,402		(210,481	)		4,109,788	$	167,021,800	$	16,210,113	(a)	$	—	$	23,764,650
Lord Abbett Securities Trust - Focused Small Cap Value Fund - Class I		3,321,048		56,202		(354,749	)		3,022,501		82,393,364		(1,861,828	)		785,231		24,436,983
Lord Abbett Securities Trust - International Opportunities Fund - Class I		8,007,354		176,797		(92,288	)		8,091,863		157,872,254		288,713			—		26,462,378
Lord Abbett Securities Trust - Micro-Cap Growth Fund - Class I		3,286,773		866,948		(493,566	)		3,660,155		86,562,672		19,193,135	(b)		—		11,218,538
Lord Abbett Research Fund, Inc. - Small Cap Value Fund - Class I		8,851,506		123,787		(440,870	)		8,534,423		163,604,891		(4,662,171	)		1,619,595		40,655,503
Lord Abbett Securities Trust - Value Opportunities Fund - Class I		7,636,112		454,133		(207,534	)		7,882,711		158,284,841		7,245,239	(c)		681,801		17,659,262
Total										$	815,739,822	$	36,413,201		$	3,086,627	$	144,197,314

(a)	Includes $11,607,104 of distributed capital gains.
(b)	Includes $16,385,329 of distributed capital gains.
(c)	Includes $7,499,811 of distributed capital gains.

54

Investments in Underlying Funds (unaudited)

Alpha Strategy Fund invests in Underlying Funds managed by Lord Abbett. As of January 31, 2021, Alpha Strategy Fund’s long-term investments were allocated among the Underlying Funds as follows:

Underlying Fund Name	% of Investments
Lord Abbett Developing Growth Fund, Inc. – Class I		20.46%
Lord Abbett Research Fund, Inc.-Small Cap Value Fund – Class I		20.04%
Lord Abbett Securities Trust–Focused Small Cap Value Fund – Class I		10.09%
Lord Abbett Securities Trust–International Opportunities Fund – Class I		19.34%
Lord Abbett Securities Trust–Micro-Cap Growth Fund – Class I		10.60%
Lord Abbett Securities Trust–Value Opportunities Fund – Class I		19.38%

The Ten Largest Holdings and the Holdings by Sector or Credit Rating, as of January 31, 2021, for each Underlying Fund are presented below. Each Underlying Fund’s annual and semiannual reports, which are sent to shareholders and filed with the SEC, contain information about the Underlying Fund’s portfolio holdings, including a complete schedule of holdings. A complete schedule of holdings for each Underlying Fund is also filed with the SEC on Form N-PORT as of the end of each respective Underlying Fund’s first and third quarters. In addition, on or about the first day of the second month following each calendar quarter-end, each Fund makes publicly available a complete schedule of its portfolio holdings as of the last day of each such quarter. The information for the most recently ended calendar quarter may be viewed at www.lordabbett.com or requested at no charge by calling Lord Abbett at 888-522-2388.

Lord Abbett Developing Growth Fund, Inc.

Ten Largest Holdings	% of Investments
Inspire Medical Systems, Inc.	1.90%
Axon Enterprise, Inc.	1.71%
Natera, Inc.	1.67%
RH	1.46%
TG Therapeutics, Inc.	1.45%
MKS Instruments, Inc.	1.43%
Cardlytics, Inc.	1.39%
Axonics Modulation Technologies, Inc.	1.35%
SunPower Corp.	1.33%
Stitch Fix, Inc. Class A	1.32%
Holdings by Sector*	% of Investments
Communication Services	0.83%
Consumer Discretionary	17.09%
Consumer Staples	0.81%
Financials	4.32%
Health Care	30.37%
Industrials	12.20%
Information Technology	25.80%
Materials	0.84%
Real Estate	0.90%
Repurchase Agreement	4.17%
Money Market Fund(a)	2.40%
Time Deposit(a)	0.27%
Total	100.00%

*	A sector may comprise several industries.
(a)	Securities were purchased with the cash collateral from loaned securities.

55

Investments in Underlying Funds (unaudited)(continued)

Focused Small Cap Value Fund
Ten Largest Holdings	% of Investments
Bancorp, Inc. (The)	3.77%
Hillenbrand, Inc.	3.42%
American Axle & Manufacturing Holdings, Inc.	3.00%
Spectrum Brands Holdings, Inc.	2.97%
Purple Innovation, Inc.	2.86%
Sterling Bancorp	2.82%
Masonite International Corp.	2.72%
Pacific Premier Bancorp, Inc.	2.63%
Western Alliance Bancorp	2.51%
Flagstar Bancorp, Inc.	2.47%
Holdings by Sector*	% of Investments
Communication Services	3.46%
Consumer Discretionary	12.76%
Consumer Staples	2.98%
Energy	4.54%
Financials	32.97%
Health Care	1.61%
Industrials	16.83%
Information Technology	8.36%
Materials	7.59%
Real Estate	5.95%
Repurchase Agreement	2.95%
Total	100.00%
*   A sector may comprise several industries.
International Opportunities Fund
Ten Largest Holdings	% of Investments
Rheinmetall AG	2.05%
Sanwa Holdings Corp.	1.61%
Marel HF	1.47%
Lancashire Holdings Ltd.	1.43%
REN – Redes Energeticas Nacionais SGPS SA	1.41%
Federal Bank Ltd.	1.40%
SHO-BOND Holdings Co. Ltd.	1.39%
Aixtron SE	1.37%
TechnoPro Holdings, Inc.	1.37%
UDG Healthcare plc	1.35%

56

Investments in Underlying Funds (unaudited)(continued)

Holdings by Sector*	% of Investments
Communication Services	4.09%
Consumer Discretionary	12.97%
Consumer Staples	3.83%
Financials	12.42%
Health Care	7.79%
Industrials	24.00%
Information Technology	14.74%
Materials	8.57%
Real Estate	6.40%
Utilities	4.16%
Repurchase Agreement	1.02%
Money Market Fund(a)	0.01%
Time Deposit(a)	0.00%	(b)
Total	100.00%

*	A sector may comprise several industries.
(a)	Securities were purchased with the cash collateral from loaned securities.
(b)	Amount is less than 0.01%.

Micro Cap Growth Fund
Ten Largest Holdings	% of Investments
Cerence, Inc.	2.81%
Magnite, Inc.	2.56%
Calix, Inc.	2.37%
Digital Turbine, Inc.	2.14%
Agilysys, Inc.	2.04%
Sonos, Inc.	2.01%
CryoPort, Inc.	1.98%
Quanterix Corp.	1.96%
Sprout Social, Inc. Class A	1.91%
Shockwave Medical, Inc.	1.85%
Holdings by Sector*	% of Investments
Consumer Discretionary	13.63%
Consumer Staples	3.92%
Financials	2.69%
Health Care	34.87%
Industrials	11.58%
Information Technology	22.11%
Real Estate	1.27%
Repurchase Agreement	4.23%
Money Market Fund(a)	5.13%
Time Deposit(a)	0.57%
Total	100.00%

*	A sector may comprise several industries.
(a)	Securities were purchased with the cash collateral from loaned securities.

57

Investments in Underlying Funds (unaudited)(continued)

Lord Abbett Research Fund, Inc. – Small Cap Value Fund

Ten Largest Holdings	% of Investments
Bancorp, Inc. (The)	3.61%
Hillenbrand, Inc.	2.55%
Spectrum Brands Holdings, Inc.	2.43%
Crane Co.	2.17%
BankUnited, Inc.	2.07%
Flagstar Bancorp, Inc.	1.96%
Sterling Bancorp	1.83%
Advanced Energy Industries, Inc.	1.83%
Bank of Hawaii Corp.	1.78%
TCF Financial Corp.	1.76%
Holdings by Sector*	% of Investments
Communication Services	1.09%
Consumer Discretionary	11.41%
Consumer Staples	3.84%
Energy	4.61%
Financials	25.87%
Health Care	4.50%
Industrials	21.19%
Information Technology	9.82%
Materials	6.38%
Real Estate	9.46%
Utilities	1.83%
Total	100.00%
*   A sector may comprise several industries.
Value Opportunities Fund
Ten Largest Holdings	% of Investments
Entegris, Inc.	2.20%
Charles River Laboratories International, Inc.	2.03%
TechTarget, Inc.	2.02%
Euronet Worldwide, Inc.	1.93%
Discover Financial Services	1.81%
East West Bancorp, Inc.	1.80%
STERIS plc	1.77%
Western Alliance Bancorp	1.76%
PerkinElmer, Inc.	1.75%
Crane Co.	1.73%

58

Investments in Underlying Funds (unaudited)(concluded)

Holdings by Sector*	% of Investments
Consumer Discretionary	14.48%
Consumer Non-Cyclical	0.67%
Consumer Staples	1.45%
Energy	2.24%
Financials	13.69%
Health Care	15.41%
Industrials	17.13%
Information Technology	18.24%
Materials	7.86%
Real Estate	5.80%
Utilities	2.07%
Repurchase Agreement	0.96%
Total	100.00%

* A sector may comprise several industries.

59

QPHR-SET-1Q

(03/21)