AEHR · Aehr Test Systems · Holdings

$60.60 -8.61 (-12.44%) At close · Oct 16

Russell 2000 member Rebalance outlook locked

Market Cap

$2.17B

32.62M

Volume · Oct 16 3.55M Avg daily vol (3M) 2.73M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 272

Total Value: $2,889,933,648

Total Shares: 30,080,704

Showing 1–100 of 293 holdings by value · page 1 of 3

Institutional Ownership Trend

27 quarters

Superinvestors Holding AEHR

All superinvestors →

Joel Greenblatt $228,622

Holder Concentration

Across 268 13F filers

Top Holder

8.9%

of institutional value

Top 5

33.4%

of institutional value

Top 10

51.2%

of institutional value

HHI

354

Broadly held

Showing 100 of 293

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

BlackRock, Inc.

$255,475,597

8.84%

2,659,542

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	49,674	$4,771,684	1.9%	Sole
BlackRock Investment Management (Australia) Ltd	68	$6,532	0.0%	Sole
BlackRock Asset Management Canada Ltd	5,712	$548,694	0.2%	Sole
BlackRock Investment Management, LLC	91,927	$8,830,507	3.5%	Sole
BLACKROCK ADVISORS LLC	164,303	$15,782,946	6.2%	Sole
BlackRock Fund Advisors	1,191,382	$114,444,154	44.8%	Sole
BlackRock Institutional Trust Company, N.A.	954,068	$91,647,772	35.9%	Sole
BlackRock Japan Co. Ltd	1,224	$117,577	0.0%	Sole
BlackRock Fund Managers Ltd.	5,740	$551,384	0.2%	Sole
BlackRock Investment Management (UK) Ltd.	15,978	$1,534,846	0.6%	Sole
BlackRock (Netherlands) B.V.	4,308	$413,826	0.2%	Sole
BlackRock Asset Management Ireland Ltd	142,289	$13,668,281	5.4%	Sole
BlackRock Life Ltd	213	$20,460	0.0%	Sole
BlackRock Asset Management Schweiz AG	5,058	$485,871	0.2%	Sole
Aperio Group, LLC	27,553	$2,646,741	1.0%	Sole
SpiderRock Advisors, LLC	45	$4,322	0.0%	Sole

VANGUARD CAPITAL MANAGEMENT LLC

$126,832,821

4.39%

1,320,350

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$114,445,884

3.96%

1,191,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	1,191,400	$114,445,884	100.0%	Other

D. E. Shaw & Co., Inc.

$113,103,061

3.91%

1,177,421

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	1,177,421	$113,103,061	100.0%	Defined

TWO SIGMA INVESTMENTS, LP

$111,872,820

3.87%

1,164,614

JANE STREET GROUP, LLC

$108,932,040

3.77%

1,134,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	1,134,000	$108,932,040	100.0%	Defined

FMR LLC

$96,716,088

3.35%

1,006,830

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	1,006,442	$96,678,818	100.0%	Defined
STRATEGIC ADVISERS LLC	240	$23,054	0.0%	Defined
FIAM LLC	148	$14,216	0.0%	Defined

VANGUARD PORTFOLIO MANAGEMENT LLC

$92,857,263

3.21%

966,659

GEODE CAPITAL MANAGEMENT, LLC

$84,101,009

2.91%

875,505

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	110,358	$10,600,989	12.6%	Defined
Held directly	765,147	$73,500,020	87.4%	Defined

GOLDMAN SACHS GROUP INC

$77,812,057

2.69%

810,036

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	750,859	$72,127,515	92.7%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	59,177	$5,684,542	7.3%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$76,982,484

2.66%

801,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	801,400	$76,982,484	100.0%	Other

JANE STREET GROUP, LLC

$72,383,418

2.50%

753,523

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	591,363	$56,806,329	78.5%	Defined
Jane Street Global Trading, LLC	162,160	$15,577,089	21.5%	Defined

CITADEL ADVISORS LLC

$71,372,580

2.47%

743,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	743,000	$71,372,580	100.0%	Defined

JPMORGAN CHASE & CO

$70,368,462

2.43%

732,547

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	23,329	$2,240,983	3.2%	Defined
J.P. Morgan Investment Management Inc.	338,186	$32,486,147	46.2%	Defined
J.P. Morgan Securities LLC	270,494	$25,983,653	36.9%	Defined
J.P. Morgan Securities plc	3,163	$303,837	0.4%	Defined
JPMorgan Asset Management (UK) Ltd	97,375	$9,353,842	13.3%	Defined

STATE STREET CORP

$68,483,671

2.37%

712,926

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	712,926	$68,483,671	100.0%	Defined

Connor, Clark & Lunn Investment Management Ltd.

$64,433,012

2.23%

670,758

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	633,814	$60,884,172	94.5%	Sole
Held directly	36,944	$3,548,840	5.5%	Sole

CITADEL ADVISORS LLC

$60,748,344

2.10%

632,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	632,400	$60,748,344	100.0%	Defined

GRATIA CAPITAL, LLC

$55,282,530

1.91%

575,500

PRICE T ROWE ASSOCIATES INC /MD/

$48,705,781

1.69%

507,035

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	49,860	$4,789,551	9.8%	Defined
Held directly	457,175	$43,916,230	90.2%	Sole

Caption Management, LLC

$46,973,340

1.63%

489,000

MORGAN STANLEY

$46,147,221

1.60%

480,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	256	$24,591	0.1%	Defined
MORGAN STANLEY & CO. LLC	9,246	$888,170	1.9%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	301,903	$29,000,802	62.8%	Defined
MORGAN STANLEY INVESTMENT MANAGEMENT INC	2,940	$282,416	0.6%	Defined
MORGAN STANLEY SMITH BARNEY LLC	126,496	$12,151,205	26.3%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	39,559	$3,800,037	8.2%	Defined

NEXT CENTURY GROWTH INVESTORS LLC

$39,454,819

1.37%

410,731

CITADEL ADVISORS LLC

$38,494,315

1.33%

400,732

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	400,732	$38,494,315	100.0%	Defined

MARSHALL WACE, LLP

$36,765,811

1.27%

382,738

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	382,738	$36,765,811	100.0%	Other

AWM Investment Company, Inc.

$36,004,056

1.25%

374,808

JANE STREET GROUP, LLC

$34,840,962

1.21%

362,700

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	362,700	$34,840,962	100.0%	Defined

T. Rowe Price Investment Management, Inc.

$30,559,279

1.06%

318,127

Invesco Ltd.

$28,455,467

0.98%

296,226

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	4,819	$462,911	1.6%	Defined
Invesco Trust Co joint	12,223	$1,174,141	4.1%	Defined
Invesco Capital Management LLC	279,184	$26,818,415	94.2%	Defined

NORTHERN TRUST CORP

$26,610,539

0.92%

277,020

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	250,762	$24,088,197	90.5%	Defined
NORTHERN TRUST GLOBAL INVESTMENTS LTD	21,509	$2,066,154	7.8%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	4,749	$456,188	1.7%	Other

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$23,968,122

0.83%

249,512

Science & Technology Partners, L.P.

$23,918,940

0.83%

249,000

LORD, ABBETT & CO. LLC

$23,788,298

0.82%

247,640

WELLINGTON MANAGEMENT GROUP LLP

$22,905,794

0.79%

238,453

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	114,220	$10,971,973	47.9%	Defined
Wellington Management Singapore Pte. Ltd.	17,400	$1,671,444	7.3%	Defined
Wellington Trust Company, NA joint	102,989	$9,893,123	43.2%	Defined
Wellington Management Australia Pty Ltd	3,844	$369,254	1.6%	Defined

Driehaus Capital Management LLC

$22,902,817

0.79%

238,422

VANGUARD FIDUCIARY TRUST CO

$20,449,348

0.71%

212,881

TUDOR INVESTMENT CORP ET AL

$19,649,073

0.68%

204,550

BAILLIE GIFFORD & CO

$19,584,519

0.68%

203,878

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BAILLIE GIFFORD & CO LTD	43,802	$4,207,620	21.5%	Defined
BAILLIE GIFFORD OVERSEAS LTD	18,823	$1,808,137	9.2%	Defined
Baillie Gifford Investment Management (Europe) Ltd	25,955	$2,493,237	12.7%	Defined
Held directly	115,298	$11,075,525	56.6%	Sole

Trexquant Investment LP

$19,393,745

0.67%

201,892

UBS Group AG

$16,245,953

0.56%

169,123

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	16,597	$1,594,307	9.8%	Defined
UBS AG	152,061	$14,606,979	89.9%	Defined
UBS Securities LLC	465	$44,667	0.3%	Defined

NEUBERGER BERMAN GROUP LLC

$16,105,803

0.56%

167,664

BARD ASSOCIATES INC

$15,071,814

0.52%

156,900

KADENSA CAPITAL Ltd

$14,918,021

0.52%

155,299

Penn Capital Management Company, LLC

$14,461,544

0.50%

150,547

UBS Group AG

$14,409,000

0.50%

150,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	150,000	$14,409,000	100.0%	Defined

BNP PARIBAS ARBITRAGE, SA

$13,987,488

0.48%

145,612

BERKSHIRE CAPITAL HOLDINGS INC

$13,701,998

0.47%

142,640

NEW YORK STATE COMMON RETIREMENT FUND

$13,260,794

0.46%

138,047

RENAISSANCE TECHNOLOGIES LLC

$12,920,070

0.45%

134,500

BANK OF AMERICA CORP /DE/

$11,628,638

0.40%

121,056

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	112,001	$10,758,816	92.5%	Defined
MERRILL LYNCH, PIERCE, FENNER & SMITH INC.	2,090	$200,765	1.7%	Defined
BOFA SECURITIES, INC.	6,965	$669,057	5.8%	Defined

Kultura Capital Management LP

$11,322,111

0.39%

117,865

Point72 Asset Management, L.P.

$11,171,778

0.39%

116,300

PEAK6 LLC

$11,142,960

0.39%

116,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PEAK6 Investments LLC joint	116,000	$11,142,960	100.0%	Defined

MILLENNIUM MANAGEMENT LLC

$10,458,724

0.36%

108,877

Point72 Asset Management, L.P.

$9,951,816

0.34%

103,600

Nuveen, LLC

$9,857,772

0.34%

102,621

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	39,771	$3,820,401	38.8%	Defined
TEACHERS ADVISORS, LLC joint	62,850	$6,037,371	61.2%	Defined

BARCLAYS PLC

$9,725,978

0.34%

101,249

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	100,382	$9,642,694	99.1%	Defined
BARCLAYS CAPITAL INC.	867	$83,284	0.9%	Defined

GILDER GAGNON HOWE & CO LLC

$9,625,596

0.33%

100,204

Bank of New York Mellon Corp

$8,988,428

0.31%

93,571

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	35,226	$3,383,809	37.6%	Defined
The Bank of New York Mellon	54,555	$5,240,553	58.3%	Defined
BNY Mellon, NA joint	3,690	$354,461	3.9%	Defined
BNY Mellon Advisors, Inc.	98	$9,413	0.1%	Defined
Held directly	2	$192	0.0%	Defined

DIMENSIONAL FUND ADVISORS LP

$8,972,387

0.31%

93,404

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Fund Advisors Ltd.	734	$70,508	0.8%	Defined
Dimensional Ireland Ltd	8,673	$833,128	9.3%	Defined
Held directly	83,997	$8,068,751	89.9%	Sole

D. E. Shaw & Co., Inc.

$8,683,824

0.30%

90,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	90,400	$8,683,824	100.0%	Defined

Tema ETFs LLC

$8,445,683

0.29%

84,779

RICE HALL JAMES & ASSOCIATES, LLC

$8,409,668

0.29%

87,546

RAYMOND JAMES FINANCIAL INC

$8,335,413

0.29%

86,773

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RAYMOND JAMES & ASSOCIATES	33,098	$3,179,393	38.1%	Defined
Raymond James Financial Services Advisors, Inc.	6,017	$577,993	6.9%	Defined
ClariVest Asset Management LLC joint	47,658	$4,578,027	54.9%	Defined

ALGERT GLOBAL LLC

$7,903,336

0.27%

82,275

Walleye Trading LLC

$7,559,922

0.26%

78,700

OSAIC HOLDINGS, INC.

$7,296,716

0.25%

75,960

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	68,298	$6,560,705	89.9%	Defined
CW Advisors, LLC	5,976	$574,054	7.9%	Sole
Osaic Advisory Services, LLC	1,686	$161,957	2.2%	Defined

HRT FINANCIAL LP

$6,461,379

0.22%

67,264

POLEN CAPITAL MANAGEMENT LLC

$6,355,041

0.22%

66,157

FRANKLIN RESOURCES INC

$6,227,665

0.22%

64,831

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FRANKLIN ADVISERS INC	63,228	$6,073,681	97.5%	Defined
PUTNAM ADVISORY CO LLC	1,603	$153,984	2.5%	Defined

Evergreen Quality Fund GP, Ltd.

$5,992,222

0.21%

62,380

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
HHLR ADVISORS, LTD.	62,380	$5,992,222	100.0%	Other

Pier Capital, LLC

$5,801,447

0.20%

60,394

Swiss National Bank

$5,753,994

0.20%

59,900

ROYAL BANK OF CANADA

$5,381,952

0.19%

56,027

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	932	$89,527	1.7%	Defined
RBC Capital Markets, LLC	54,568	$5,241,802	97.4%	Defined
RBC Dominion Securities Inc.	527	$50,623	0.9%	Defined

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

$5,073,407

0.18%

52,815

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	4,704	$451,866	8.9%	Defined
UBS Asset Management Switzerland AG	40,237	$3,865,166	76.2%	Sole
Held directly	7,874	$756,375	14.9%	Defined

HERITAGE INVESTORS MANAGEMENT CORP

$4,645,749

0.16%

48,363

CAPITAL FUND MANAGEMENT S.A.

$4,312,325

0.15%

44,892

Harvest Investment Services, LLC

$4,261,125

0.15%

44,359

Schonfeld Strategic Advisors LLC

$4,236,822

0.15%

44,106

Russell Investments Group, Ltd.

$3,997,150

0.14%

41,611

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	12,564	$1,206,897	30.2%	Defined
Russell Investments Capital, LLC	11,996	$1,152,335	28.8%	Defined
Russell Investments France SAS	4,620	$443,797	11.1%	Defined
Russell Investments Trust Company	12,431	$1,194,121	29.9%	Defined

Premier Fund Managers Ltd

$3,973,233

0.14%

41,362

Walleye Trading LLC

$3,957,672

0.14%

41,200

DEUTSCHE BANK AG\

$3,934,616

0.14%

40,960

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investment GmbH	8,592	$825,347	21.0%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC	577	$55,426	1.4%	Defined
DWS Investments UK Ltd	31,791	$3,053,843	77.6%	Defined

Bouvel Investment Partners, LLC

$3,833,975

0.13%

38,486

RHUMBLINE ADVISERS

$3,730,490

0.13%

38,835

CITIGROUP INC

$3,603,978

0.12%

37,518

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	37,518	$3,603,978	100.0%	Defined

INTRINSIC EDGE CAPITAL MANAGEMENT LLC

$3,515,796

0.12%

36,600

ALLIANCEBERNSTEIN L.P.

$3,505,901

0.12%

36,497

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	36,497	$3,505,901	100.0%	Defined

Informed Momentum Co LLC

$3,489,091

0.12%

36,322

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

$3,456,911

0.12%

35,987

SHARIAPORTFOLIO, INC.

$3,310,227

0.11%

34,460

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

$3,301,582

0.11%

34,370

WELLS FARGO & COMPANY/MN

$3,282,368

0.11%

34,170

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	28,028	$2,692,369	82.0%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	4,612	$443,028	13.5%	Defined
WELLS FARGO CLEARING SERVICES, LLC	1,530	$146,971	4.5%	Defined

D. E. Shaw & Co., Inc.

$3,227,616

0.11%

33,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	33,600	$3,227,616	100.0%	Defined

LPL Financial LLC

$3,115,225

0.11%

32,430

AMERIPRISE FINANCIAL INC

$3,068,732

0.11%

31,946

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	31,867	$3,061,144	99.8%	Defined
Ameriprise Financial Services, LLC	79	$7,588	0.2%	Defined

Havemeyer Place LP

$3,001,490

0.10%

31,246

UBS Group AG

$2,872,194

0.10%

29,900

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	29,900	$2,872,194	100.0%	Defined

Cambridge Investment Research Advisors, Inc.

$2,647,413

0.09%

27,560

SG Americas Securities, LLC

$2,581,804

0.09%

26,877

Alphadyne Asset Management LP

$2,487,954

0.09%

25,900

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Key facts CIK 1040470 CUSIP 00760J108 13F (30d) 25 filings 25 filers Visit website Investor relations