AEHR US Equity

AEHR TEST SYSTEMS

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Information Technology · Instruments For Meas & Testing of Electricity & Elec Signals · CIK 1040470 · FYE 1231

$70.00

-7.48 (-9.65%)

USD · as of 2026-07-28 · marketstack

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Institutional ownership· 13F filers holding AEHR · 2026-Q1 methodology → sources →

190 holders

% of shares outstanding held

68.8%

Shares held (13F)

22,455,269

Reporting holders

190

Top holders

largest 100 of 190 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	2,286,8992.3M	$85M	7.01%	ADD 8%
2	FMR LLC	2,142,6392.1M	$79M	6.57%	TRIM -15%
3	AWM Investment Company, Inc.	1,593,9711.6M	$59M	4.89%	ADD 4%
4	PRICE T ROWE ASSOCIATES INC /MD/	1,349,3511.3M	$50M	4.14%	ADD 3824%
5	VANGUARD CAPITAL MANAGEMENT LLC	1,281,8571.3M	$48M	3.93%	NEW†
6	GOLDMAN SACHS GROUP INC	1,262,0431.3M	$47M	3.87%	ADD 617%
7	BAILLIE GIFFORD & CO	1,001,0181.0M	$37M	3.07%	TRIM -22%
8	VANGUARD PORTFOLIO MANAGEMENT LLC	917,876917,876	$34M	2.81%	NEW†
9	NEXT CENTURY GROWTH INVESTORS LLC	754,737754,737	$28M	2.31%	ADD 37%
10	GEODE CAPITAL MANAGEMENT, LLC	725,711725,711	$27M	2.22%	ADD 6%
11	STATE STREET CORP	623,306623,306	$23M	1.91%	—
12	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	513,293513,293	$19M	1.57%	ADD 4%
13	GILDER GAGNON HOWE & CO LLC	444,296444,296	$16M	1.36%	ADD 40%
14	SILVERCREST ASSET MANAGEMENT GROUP LLC	344,247344,247	$13M	1.06%	ADD 12%
15	D. E. Shaw & Co., Inc.	341,638341,638	$13M	1.05%	ADD 18%
16	Invesco Ltd.	285,725285,725	$11M	0.88%	ADD 913%
17	JANE STREET GROUP, LLC	277,045277,045	$10M	0.85%	ADD 15%
18	RICE HALL JAMES & ASSOCIATES, LLC	272,252272,252	$10M	0.83%	TRIM -40%
19	Walleye Capital LLC	267,187267,187	$10M	0.82%	ADD 5576%
20	NORTHERN TRUST CORP	252,158252,158	$9M	0.77%	ADD 5%
21	UBS Group AG	246,763246,763	$9M	0.76%	—
22	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	235,539235,539	$9M	0.72%	—
23	Connor, Clark & Lunn Investment Management Ltd.	218,809218,809	$8M	0.67%	NEW
24	TWO SIGMA INVESTMENTS, LP	214,372214,372	$8M	0.66%	TRIM -40%
25	SUSQUEHANNA INTERNATIONAL GROUP, LLP	202,039202,039	$7M	0.62%	ADD 82%
26	VANGUARD FIDUCIARY TRUST CO	197,166197,166	$7M	0.60%	NEW
27	LORD, ABBETT & CO. LLC	179,289179,289	$7M	0.55%	NEW
28	BARD ASSOCIATES INC	179,127179,127	$7M	0.55%	—
29	MORGAN STANLEY	165,673165,673	$6M	0.51%	TRIM -32%
30	JPMORGAN CHASE & CO	190,339190,339	$6M	0.58%	ADD 196%
31	WELLINGTON MANAGEMENT GROUP LLP	152,885152,885	$6M	0.47%	TRIM -82%
32	CITADEL ADVISORS LLC	141,291141,291	$5M	0.43%	TRIM -36%
33	Pier Capital, LLC	126,991126,991	$5M	0.39%	TRIM -40%
34	OSAIC HOLDINGS, INC.	105,002105,002	$4M	0.32%	ADD 6%
35	MILLENNIUM MANAGEMENT LLC	95,82695,826	$4M	0.29%	ADD 62%
36	ExodusPoint Capital Management, LP	93,62293,622	$3M	0.29%	NEW
37	DIMENSIONAL FUND ADVISORS LP	93,03793,037	$3M	0.29%	TRIM -15%
38	Bank of New York Mellon Corp	89,40589,405	$3M	0.27%	—
39	Kultura Capital Management LP	80,20080,200	$3M	0.25%	NEW
40	Penbrook Management LLC	79,51579,515	$3M	0.24%	TRIM -31%
41	POLEN CAPITAL MANAGEMENT LLCtracked	79,39679,396	$3M	0.24%	ADD 164%
42	KENNEDY CAPITAL MANAGEMENT LLC	76,04276,042	$3M	0.23%	TRIM -79%
43	RAYMOND JAMES FINANCIAL INC	75,24475,244	$3M	0.23%	ADD 491%
44	KLCM Advisors, Inc.	75,00075,000	$3M	0.23%	—
45	Bouvel Investment Partners, LLC	71,82471,824	$3M	0.22%	ADD 34%
46	Nuveen, LLC	70,35770,357	$3M	0.22%	—
47	Johnson Financial Group, LLC	68,90068,900	$3M	0.21%	NEW
48	NEW YORK STATE COMMON RETIREMENT FUND	61,58261,582	$2M	0.19%	ADD 31%
49	Kestra Advisory Services, LLC	60,10060,100	$2M	0.18%	—
50	ROYAL BANK OF CANADA	59,93959,939	$2M	0.18%	ADD 15%
51	Swiss National Bank	57,50057,500	$2M	0.18%	ADD 2%
52	BANK OF AMERICA CORP /DE/	56,80056,800	$2M	0.17%	TRIM -20%
53	BARCLAYS PLC	52,21452,214	$2M	0.16%	ADD 18%
54	GRATIA CAPITAL, LLC	51,56051,560	$2M	0.16%	TRIM -63%
55	IMC-Chicago, LLC	50,70950,709	$2M	0.16%	ADD 68%
56	HERITAGE INVESTORS MANAGEMENT CORP	48,41348,413	$2M	0.15%	—
57	TUDOR INVESTMENT CORP ET AL	48,19348,193	$2M	0.15%	TRIM -73%
58	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	41,59941,599	$2M	0.13%	ADD 2272%
59	LAUREL OAK WEALTH MANAGEMENT, LLC	38,67038,670	$1M	0.12%	NEW
60	ROYCE & ASSOCIATES LP	38,10238,102	$1M	0.12%	TRIM -10%
61	RHUMBLINE ADVISERS	36,83336,833	$1M	0.11%	—
62	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	34,38134,381	$1M	0.11%	ADD 19%
63	Cambridge Investment Research Advisors, Inc.	31,60031,600	$1M	0.10%	TRIM -3%
64	Universal- Beteiligungs- und Servicegesellschaft mbH	30,62130,621	$1M	0.09%	ADD 53%
65	Fortitude Advisory Group L.L.C.	28,68228,682	$1M	0.09%	ADD 36%
66	Quantinno Capital Management LP	28,52028,520	$1M	0.09%	TRIM -3%
67	SANDLER CAPITAL MANAGEMENT	27,80727,807	$1M	0.09%	NEW
68	DEUTSCHE BANK AG\	26,72326,723	$990,889	0.08%	ADD 25%
69	G2 Investment Partners Management LLC	25,00025,000	$927,000	0.08%	NEW
70	Legal & General Group Plc	24,82024,820	$920,326	0.08%	TRIM -14%
71	Squarepoint Ops LLC	23,58623,586	$874,569	0.07%	TRIM -76%
72	WELLS FARGO & COMPANY/MN	23,55423,554	$873,381	0.07%	TRIM -33%
73	Harvest Investment Services, LLC	23,22823,228	$861,294	0.07%	TRIM -7%
74	SEI INVESTMENTS CO	23,10923,109	$856,889	0.07%	TRIM -28%
75	Brevan Howard Capital Management LP	22,77522,775	$844,497	0.07%	TRIM -29%
76	12 West Capital Management LP	22,00022,000	$815,760	0.07%	NEW
77	STATE OF WISCONSIN INVESTMENT BOARD	21,93921,939	$813,498	0.07%	TRIM -39%
78	CLOUGH CAPITAL PARTNERS L P	21,89921,899	$812,015	0.07%	NEW
79	HORIZON KINETICS ASSET MANAGEMENT LLC	21,60021,600	$800,928	0.07%	—
80	Engineers Gate Manager LP	20,47320,473	$759,139	0.06%	ADD 36%
81	ALLIANCEBERNSTEIN L.P.	36,42036,420	$735,320	0.11%	—
82	Vanguard Global Advisers, LLC	19,67419,674	$729,512	0.06%	NEW
83	VANGUARD ASSET MANAGEMENT, Ltd	19,18619,186	$711,417	0.06%	NEW
84	State of Alaska, Department of Revenue	18,67518,675	$692,000	0.06%	—
85	Sun Group Wealth Partners	17,93117,931	$664,880	0.05%	ADD 2%
86	Rockefeller Capital Management L.P.	17,88917,889	$663,324	0.05%	ADD 1030%
87	Headlands Technologies LLC	17,38917,389	$644,784	0.05%	TRIM -60%
88	GSA CAPITAL PARTNERS LLP	17,36717,367	$644,000	0.05%	NEW
89	MetLife Investment Management, LLC	16,54916,549	$613,637	0.05%	—
90	Balyasny Asset Management L.P.	16,26216,262	$602,995	0.05%	TRIM -34%
91	STIFEL FINANCIAL CORP	15,63015,630	$579,561	0.05%	NEW
92	JANUS HENDERSON GROUP PLC	15,00015,000	$555,825	0.05%	—
93	Halter Ferguson Financial Inc.	14,63114,631	$542,522	0.04%	TRIM -98%
94	WHITE PINE CAPITAL LLC	14,53814,538	$539,069	0.04%	TRIM -41%
95	Integrated Wealth Concepts LLC	14,19514,195	$526,351	0.04%	NEW
96	Inspire Investing, LLC	14,05714,057	$521,234	0.04%	TRIM -40%
97	Cetera Investment Advisers	13,92013,920	$516,154	0.04%	ADD 20%
98	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	13,71113,711	$508,404	0.04%	ADD 3%
99	CIM, LLC	13,67113,671	$506,921	0.04%	NEW
100	FRANKLIN RESOURCES INC	13,25113,251	$491,347	0.04%	—

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

BlackRock, Inc.

2.0M

2.1M

2.0M

2.1M

2.3M

$85M

FMR LLC

3.1M

3.4M

1.5M

2.7M

2.5M

2.1M

$79M

AWM Investment Company, Inc.

1.2M

1.6M

1.5M

1.6M

$59M

PRICE T ROWE ASSOCIATES INC /MD/

25K

42K

43K

45K

34K

1.3M

$50M

VANGUARD CAPITAL MANAGEMENT LLC

—

1.3M

$48M

GOLDMAN SACHS GROUP INC

177K

146K

131K

116K

176K

1.3M

$47M

BAILLIE GIFFORD & CO

2.0M

1.5M

1.3M

1.0M

$37M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

918K

$34M

NEXT CENTURY GROWTH INVESTORS LLC

—

276K

553K

755K

$28M

GEODE CAPITAL MANAGEMENT, LLC

648K

670K

679K

680K

686K

726K

$27M

STATE STREET CORP

599K

609K

612K

602K

624K

623K

$23M

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

—

894K

496K

513K

$19M

GILDER GAGNON HOWE & CO LLC

—

324K

318K

444K

$16M

SILVERCREST ASSET MANAGEMENT GROUP LLC

362K

360K

445K

308K

344K

$13M

D. E. Shaw & Co., Inc.

—

234K

290K

342K

$13M

Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	190	22,455,269	68.8%	$831M
2025-Q4	150	21,189,625

Short interest has its own tab now — open SI →

Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.

Activists & large holders· Schedule 13D/G beneficial owners · AEHR

Large holders — 13G, passive (top 4 by % of class)

Holder	% of class	Type	As of
FMR LLC	7%	QII	2026-03-31	SEC →
AWM Investment Company, Inc.	5.3%	QII	2025-03-31	SEC →
BAILLIE GIFFORD & CO	4.3%	QII	2025-12-31	SEC →
VANGUARD GROUP INC	0%	QII	2026-03-13	SEC →

Source: SEC Schedule 13D/13G structured XML. 13D = active intent; 13G filers report passively (Rule 13d-1(b) QII / 13d-1(c) Passive / 13d-1(d) Exempt) and are not activists. Percent and delta are the group aggregate the filing reports. Structured 13D/G coverage begins December 2024 (SEC XML mandate).

Institutional ownership· 13F filers holding AEHR · 2026-Q1 methodology → sources →

190 holders

% of shares outstanding held

68.8%

Shares held (13F)

22,455,269

Reporting holders

190

Top holders

largest 100 of 190 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	2,286,8992.3M	$85M	7.01%	ADD 8%
2	FMR LLC	2,142,6392.1M	$79M	6.57%	TRIM -15%
3	AWM Investment Company, Inc.	1,593,9711.6M	$59M	4.89%	ADD 4%
4	PRICE T ROWE ASSOCIATES INC /MD/	1,349,3511.3M	$50M	4.14%	ADD 3824%
5	VANGUARD CAPITAL MANAGEMENT LLC	1,281,8571.3M	$48M	3.93%	NEW†
6	GOLDMAN SACHS GROUP INC	1,262,0431.3M	$47M	3.87%	ADD 617%
7	BAILLIE GIFFORD & CO	1,001,0181.0M	$37M	3.07%	TRIM -22%
8	VANGUARD PORTFOLIO MANAGEMENT LLC	917,876917,876	$34M	2.81%	NEW†
9	NEXT CENTURY GROWTH INVESTORS LLC	754,737754,737	$28M	2.31%	ADD 37%
10	GEODE CAPITAL MANAGEMENT, LLC	725,711725,711	$27M	2.22%	ADD 6%
11	STATE STREET CORP	623,306623,306	$23M	1.91%	—
12	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	513,293513,293	$19M	1.57%	ADD 4%
13	GILDER GAGNON HOWE & CO LLC	444,296444,296	$16M	1.36%	ADD 40%
14	SILVERCREST ASSET MANAGEMENT GROUP LLC	344,247344,247	$13M	1.06%	ADD 12%
15	D. E. Shaw & Co., Inc.	341,638341,638	$13M	1.05%	ADD 18%
16	Invesco Ltd.	285,725285,725	$11M	0.88%	ADD 913%
17	JANE STREET GROUP, LLC	277,045277,045	$10M	0.85%	ADD 15%
18	RICE HALL JAMES & ASSOCIATES, LLC	272,252272,252	$10M	0.83%	TRIM -40%
19	Walleye Capital LLC	267,187267,187	$10M	0.82%	ADD 5576%
20	NORTHERN TRUST CORP	252,158252,158	$9M	0.77%	ADD 5%
21	UBS Group AG	246,763246,763	$9M	0.76%	—
22	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	235,539235,539	$9M	0.72%	—
23	Connor, Clark & Lunn Investment Management Ltd.	218,809218,809	$8M	0.67%	NEW
24	TWO SIGMA INVESTMENTS, LP	214,372214,372	$8M	0.66%	TRIM -40%
25	SUSQUEHANNA INTERNATIONAL GROUP, LLP	202,039202,039	$7M	0.62%	ADD 82%
26	VANGUARD FIDUCIARY TRUST CO	197,166197,166	$7M	0.60%	NEW
27	LORD, ABBETT & CO. LLC	179,289179,289	$7M	0.55%	NEW
28	BARD ASSOCIATES INC	179,127179,127	$7M	0.55%	—
29	MORGAN STANLEY	165,673165,673	$6M	0.51%	TRIM -32%
30	JPMORGAN CHASE & CO	190,339190,339	$6M	0.58%	ADD 196%
31	WELLINGTON MANAGEMENT GROUP LLP	152,885152,885	$6M	0.47%	TRIM -82%
32	CITADEL ADVISORS LLC	141,291141,291	$5M	0.43%	TRIM -36%
33	Pier Capital, LLC	126,991126,991	$5M	0.39%	TRIM -40%
34	OSAIC HOLDINGS, INC.	105,002105,002	$4M	0.32%	ADD 6%
35	MILLENNIUM MANAGEMENT LLC	95,82695,826	$4M	0.29%	ADD 62%
36	ExodusPoint Capital Management, LP	93,62293,622	$3M	0.29%	NEW
37	DIMENSIONAL FUND ADVISORS LP	93,03793,037	$3M	0.29%	TRIM -15%
38	Bank of New York Mellon Corp	89,40589,405	$3M	0.27%	—
39	Kultura Capital Management LP	80,20080,200	$3M	0.25%	NEW
40	Penbrook Management LLC	79,51579,515	$3M	0.24%	TRIM -31%
41	POLEN CAPITAL MANAGEMENT LLCtracked	79,39679,396	$3M	0.24%	ADD 164%
42	KENNEDY CAPITAL MANAGEMENT LLC	76,04276,042	$3M	0.23%	TRIM -79%
43	RAYMOND JAMES FINANCIAL INC	75,24475,244	$3M	0.23%	ADD 491%
44	KLCM Advisors, Inc.	75,00075,000	$3M	0.23%	—
45	Bouvel Investment Partners, LLC	71,82471,824	$3M	0.22%	ADD 34%
46	Nuveen, LLC	70,35770,357	$3M	0.22%	—
47	Johnson Financial Group, LLC	68,90068,900	$3M	0.21%	NEW
48	NEW YORK STATE COMMON RETIREMENT FUND	61,58261,582	$2M	0.19%	ADD 31%
49	Kestra Advisory Services, LLC	60,10060,100	$2M	0.18%	—
50	ROYAL BANK OF CANADA	59,93959,939	$2M	0.18%	ADD 15%
51	Swiss National Bank	57,50057,500	$2M	0.18%	ADD 2%
52	BANK OF AMERICA CORP /DE/	56,80056,800	$2M	0.17%	TRIM -20%
53	BARCLAYS PLC	52,21452,214	$2M	0.16%	ADD 18%
54	GRATIA CAPITAL, LLC	51,56051,560	$2M	0.16%	TRIM -63%
55	IMC-Chicago, LLC	50,70950,709	$2M	0.16%	ADD 68%
56	HERITAGE INVESTORS MANAGEMENT CORP	48,41348,413	$2M	0.15%	—
57	TUDOR INVESTMENT CORP ET AL	48,19348,193	$2M	0.15%	TRIM -73%
58	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	41,59941,599	$2M	0.13%	ADD 2272%
59	LAUREL OAK WEALTH MANAGEMENT, LLC	38,67038,670	$1M	0.12%	NEW
60	ROYCE & ASSOCIATES LP	38,10238,102	$1M	0.12%	TRIM -10%
61	RHUMBLINE ADVISERS	36,83336,833	$1M	0.11%	—
62	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	34,38134,381	$1M	0.11%	ADD 19%
63	Cambridge Investment Research Advisors, Inc.	31,60031,600	$1M	0.10%	TRIM -3%
64	Universal- Beteiligungs- und Servicegesellschaft mbH	30,62130,621	$1M	0.09%	ADD 53%
65	Fortitude Advisory Group L.L.C.	28,68228,682	$1M	0.09%	ADD 36%
66	Quantinno Capital Management LP	28,52028,520	$1M	0.09%	TRIM -3%
67	SANDLER CAPITAL MANAGEMENT	27,80727,807	$1M	0.09%	NEW
68	DEUTSCHE BANK AG\	26,72326,723	$990,889	0.08%	ADD 25%
69	G2 Investment Partners Management LLC	25,00025,000	$927,000	0.08%	NEW
70	Legal & General Group Plc	24,82024,820	$920,326	0.08%	TRIM -14%
71	Squarepoint Ops LLC	23,58623,586	$874,569	0.07%	TRIM -76%
72	WELLS FARGO & COMPANY/MN	23,55423,554	$873,381	0.07%	TRIM -33%
73	Harvest Investment Services, LLC	23,22823,228	$861,294	0.07%	TRIM -7%
74	SEI INVESTMENTS CO	23,10923,109	$856,889	0.07%	TRIM -28%
75	Brevan Howard Capital Management LP	22,77522,775	$844,497	0.07%	TRIM -29%
76	12 West Capital Management LP	22,00022,000	$815,760	0.07%	NEW
77	STATE OF WISCONSIN INVESTMENT BOARD	21,93921,939	$813,498	0.07%	TRIM -39%
78	CLOUGH CAPITAL PARTNERS L P	21,89921,899	$812,015	0.07%	NEW
79	HORIZON KINETICS ASSET MANAGEMENT LLC	21,60021,600	$800,928	0.07%	—
80	Engineers Gate Manager LP	20,47320,473	$759,139	0.06%	ADD 36%
81	ALLIANCEBERNSTEIN L.P.	36,42036,420	$735,320	0.11%	—
82	Vanguard Global Advisers, LLC	19,67419,674	$729,512	0.06%	NEW
83	VANGUARD ASSET MANAGEMENT, Ltd	19,18619,186	$711,417	0.06%	NEW
84	State of Alaska, Department of Revenue	18,67518,675	$692,000	0.06%	—
85	Sun Group Wealth Partners	17,93117,931	$664,880	0.05%	ADD 2%
86	Rockefeller Capital Management L.P.	17,88917,889	$663,324	0.05%	ADD 1030%
87	Headlands Technologies LLC	17,38917,389	$644,784	0.05%	TRIM -60%
88	GSA CAPITAL PARTNERS LLP	17,36717,367	$644,000	0.05%	NEW
89	MetLife Investment Management, LLC	16,54916,549	$613,637	0.05%	—
90	Balyasny Asset Management L.P.	16,26216,262	$602,995	0.05%	TRIM -34%
91	STIFEL FINANCIAL CORP	15,63015,630	$579,561	0.05%	NEW
92	JANUS HENDERSON GROUP PLC	15,00015,000	$555,825	0.05%	—
93	Halter Ferguson Financial Inc.	14,63114,631	$542,522	0.04%	TRIM -98%
94	WHITE PINE CAPITAL LLC	14,53814,538	$539,069	0.04%	TRIM -41%
95	Integrated Wealth Concepts LLC	14,19514,195	$526,351	0.04%	NEW
96	Inspire Investing, LLC	14,05714,057	$521,234	0.04%	TRIM -40%
97	Cetera Investment Advisers	13,92013,920	$516,154	0.04%	ADD 20%
98	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	13,71113,711	$508,404	0.04%	ADD 3%
99	CIM, LLC	13,67113,671	$506,921	0.04%	NEW
100	FRANKLIN RESOURCES INC	13,25113,251	$491,347	0.04%	—

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

BlackRock, Inc.

2.0M

2.1M

2.0M

2.1M

2.3M

$85M

FMR LLC

3.1M

3.4M

1.5M

2.7M

2.5M

2.1M

$79M

AWM Investment Company, Inc.

1.2M

1.6M

1.5M

1.6M

$59M

PRICE T ROWE ASSOCIATES INC /MD/

25K

42K

43K

45K

34K

1.3M

$50M

VANGUARD CAPITAL MANAGEMENT LLC

—

1.3M

$48M

GOLDMAN SACHS GROUP INC

177K

146K

131K

116K

176K

1.3M

$47M

BAILLIE GIFFORD & CO

2.0M

1.5M

1.3M

1.0M

$37M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

918K

$34M

NEXT CENTURY GROWTH INVESTORS LLC

—

276K

553K

755K

$28M

GEODE CAPITAL MANAGEMENT, LLC

648K

670K

679K

680K

686K

726K

$27M

STATE STREET CORP

599K

609K

612K

602K

624K

623K

$23M

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

—

894K

496K

513K

$19M

GILDER GAGNON HOWE & CO LLC

—

324K

318K

444K

$16M

SILVERCREST ASSET MANAGEMENT GROUP LLC

362K

360K

445K

308K

344K

$13M

D. E. Shaw & Co., Inc.

—

234K

290K

342K

$13M

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	190	22,455,269	68.8%	$831M
2025-Q4	150	21,189,625

Short interest has its own tab now — open SI →

Activists & large holders· Schedule 13D/G beneficial owners · AEHR

Large holders — 13G, passive (top 4 by % of class)

Holder	% of class	Type	As of
FMR LLC	7%	QII	2026-03-31	SEC →
AWM Investment Company, Inc.	5.3%	QII	2025-03-31	SEC →
BAILLIE GIFFORD & CO	4.3%	QII	2025-12-31	SEC →
VANGUARD GROUP INC	0%	QII	2026-03-13	SEC →

AEHR US Equity☆

Institutional ownership· 13F filers holding AEHR · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · AEHR

Institutional ownership· 13F filers holding AEHR · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · AEHR

AEHR US Equity