AEHR · Aehr Test Systems
Market Cap
$2.59B
Shares
32.62M
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.
Holders: 268
Total Value: $2,881,554,820
Total Shares: 30,000,284
Showing 1–100
of 290 holdings by value
· page 1 of 3
Institutional Ownership Trend
26 quarters
Superinvestors Holding AEHR
All superinvestors →Holder Concentration
Across 268 13F filers · Δ vs Mar 31, 2026Top Holder
8.9%
+0.2 pts
Top 5
33.4%
+0.1 pts
Top 10
51.2%
−1.8 pts
HHI
354
Broadly held−18
Quarterly Activity
vs Mar 31, 2026
New
105
Increased
77
Decreased
73
Sold Out
32
Unchanged
13
Holder count:
+73
Institutional value:
+192.8%
Shares held:
+13.0%
Top Buyers
vs Mar 31, 2026| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega JANE STREET GROUP, LLC | +1,672,978 | 2,250,223 | |
| Mega CITADEL ADVISORS LLC | +1,094,141 | 1,776,132 | |
| Mega TWO SIGMA INVESTMENTS, LP | +966,742 | 1,181,114 | |
| Mega D. E. Shaw & Co., Inc. | +877,783 | 1,301,421 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | +552,511 | 2,009,650 |
Top Sellers
vs Mar 31, 2026| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mid AWM Investment Company, Inc. | −1,219,163 | 374,808 | |
| Mega FMR LLC | −1,135,809 | 1,006,830 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ | −842,316 | 507,035 | |
| Mega BAILLIE GIFFORD & CO | −797,140 | 203,878 | |
| Mega GOLDMAN SACHS GROUP INC | −452,007 | 810,036 |
Top New Positions
vs Mar 31, 2026| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega T. Rowe Price Investment Management, Inc. | 318,127 | $30,559,279 | |
| Small Science & Technology Partners, L.P. | 249,000 | $23,918,940 | |
| Large Driehaus Capital Management LLC | 238,422 | $22,902,817 | |
| Large Trexquant Investment LP | 201,892 | $19,393,745 | |
| Mega NEUBERGER BERMAN GROUP LLC | 167,664 | $16,105,803 |
Top Sold-Out Positions
vs Mar 31, 2026| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 513,293 | $19,032,904 | |
| Large SILVERCREST ASSET MANAGEMENT GROUP LLC | 344,247 | $12,764,678 | |
| Large ExodusPoint Capital Management, LP | 93,622 | $3,471,503 | |
| Mid KENNEDY CAPITAL MANAGEMENT LLC | 76,042 | $2,819,637 | |
| Large Kestra Advisory Services, LLC | 60,100 | $2,228,508 |
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. | $255,475,597 | 8.87% | 2,659,542 | Shares | 2026-08-07 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $126,832,821 | 4.40% | 1,320,350 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $114,445,884 | 3.97% | 1,191,400 | Call | 2026-08-14 | |
| Mega D. E. Shaw & Co., Inc. | $113,103,061 | 3.93% | 1,177,421 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP | $111,872,820 | 3.88% | 1,164,614 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $108,932,040 | 3.78% | 1,134,000 | Put | 2026-08-14 | |
| Mega FMR LLC | $96,716,088 | 3.36% | 1,006,830 | Shares | 2026-08-13 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC | $92,857,263 | 3.22% | 966,659 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | $84,101,009 | 2.92% | 875,505 | Shares | 2026-08-12 | |
| Mega GOLDMAN SACHS GROUP INC | $77,812,057 | 2.70% | 810,036 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $76,982,484 | 2.67% | 801,400 | Put | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $72,383,418 | 2.51% | 753,523 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC | $71,372,580 | 2.48% | 743,000 | Put | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO | $70,368,462 | 2.44% | 732,547 | Shares | 2026-08-12 | |
| Mega STATE STREET CORP | $68,483,671 | 2.38% | 712,926 | Shares | 2026-08-07 | |
| Large Connor, Clark & Lunn Investment Management Ltd. | $64,433,012 | 2.24% | 670,758 | Shares | 2026-08-13 | |
| Mega CITADEL ADVISORS LLC | $60,748,344 | 2.11% | 632,400 | Call | 2026-08-14 | |
| Small GRATIA CAPITAL, LLC | $55,282,530 | 1.92% | 575,500 | Call | 2026-08-14 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ | $48,705,781 | 1.69% | 507,035 | Shares | 2026-08-14 | |
| Large Caption Management, LLC | $46,973,340 | 1.63% | 489,000 | Call | 2026-08-14 | |
| Mega MORGAN STANLEY | $46,147,221 | 1.60% | 480,400 | Shares | 2026-08-13 | |
| Mid NEXT CENTURY GROWTH INVESTORS LLC | $39,454,819 | 1.37% | 410,731 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC | $38,494,315 | 1.34% | 400,732 | Shares | 2026-08-14 | |
| Large MARSHALL WACE, LLP | $36,765,811 | 1.28% | 382,738 | Shares | 2026-08-13 | |
| Mid AWM Investment Company, Inc. | $36,004,056 | 1.25% | 374,808 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $34,840,962 | 1.21% | 362,700 | Call | 2026-08-14 | |
| Mega T. Rowe Price Investment Management, Inc. | $30,559,279 | 1.06% | 318,127 | Shares | 2026-08-14 | |
| Mega Invesco Ltd. | $28,455,467 | 0.99% | 296,226 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $26,610,539 | 0.92% | 277,020 | Shares | 2026-08-13 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $23,968,122 | 0.83% | 249,512 | Shares | 2026-08-14 | |
| Small Science & Technology Partners, L.P. | $23,918,940 | 0.83% | 249,000 | Shares | 2026-08-14 | |
| Large LORD, ABBETT & CO. LLC | $23,788,298 | 0.83% | 247,640 | Shares | 2026-08-14 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP | $22,905,794 | 0.79% | 238,453 | Shares | 2026-08-14 | |
| Large Driehaus Capital Management LLC | $22,902,817 | 0.79% | 238,422 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $20,449,348 | 0.71% | 212,881 | Shares | 2026-08-13 | |
| Large TUDOR INVESTMENT CORP ET AL | $19,649,073 | 0.68% | 204,550 | Shares | 2026-08-14 | |
| Mega BAILLIE GIFFORD & CO | $19,584,519 | 0.68% | 203,878 | Shares | 2026-08-06 | |
| Large Trexquant Investment LP | $19,393,745 | 0.67% | 201,892 | Shares | 2026-08-14 | |
| Mega UBS Group AG | $16,245,953 | 0.56% | 169,123 | Shares | 2026-08-13 | |
| Mega NEUBERGER BERMAN GROUP LLC | $16,105,803 | 0.56% | 167,664 | Shares | 2026-08-13 | |
| Small BARD ASSOCIATES INC | $15,071,814 | 0.52% | 156,900 | Shares | 2026-08-12 | |
| Small KADENSA CAPITAL Ltd | $14,918,021 | 0.52% | 155,299 | Shares | 2026-08-14 | |
| Mid Penn Capital Management Company, LLC | $14,461,544 | 0.50% | 150,547 | Shares | 2026-07-30 | |
| Mega UBS Group AG | $14,409,000 | 0.50% | 150,000 | Call | 2026-08-13 | |
| Mega BNP PARIBAS ARBITRAGE, SA | $13,987,488 | 0.49% | 145,612 | Shares | 2026-08-13 | |
| Small BERKSHIRE CAPITAL HOLDINGS INC | $13,701,998 | 0.48% | 142,640 | Shares | 2026-08-14 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND Pension | $13,260,794 | 0.46% | 138,047 | Shares | 2026-07-29 | |
| Large RENAISSANCE TECHNOLOGIES LLC | $12,920,070 | 0.45% | 134,500 | Shares | 2026-08-13 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $11,628,638 | 0.40% | 121,056 | Shares | 2026-08-14 | |
| Small Kultura Capital Management LP | $11,322,111 | 0.39% | 117,865 | Shares | 2026-08-14 | |
| Large Point72 Asset Management, L.P. | $11,171,778 | 0.39% | 116,300 | Call | 2026-08-14 | |
| Large PEAK6 LLC | $11,142,960 | 0.39% | 116,000 | Call | 2026-08-13 | |
| Mega MILLENNIUM MANAGEMENT LLC | $10,458,724 | 0.36% | 108,877 | Shares | 2026-08-14 | |
| Large Point72 Asset Management, L.P. | $9,951,816 | 0.35% | 103,600 | Put | 2026-08-14 | |
| Mega Nuveen, LLC | $9,857,772 | 0.34% | 102,621 | Shares | 2026-08-11 | |
| Mega BARCLAYS PLC | $9,725,978 | 0.34% | 101,249 | Shares | 2026-08-14 | |
| Mid GILDER GAGNON HOWE & CO LLC | $9,625,596 | 0.33% | 100,204 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $8,988,428 | 0.31% | 93,571 | Shares | 2026-08-06 | |
| Mega DIMENSIONAL FUND ADVISORS LP | $8,972,387 | 0.31% | 93,404 | Shares | 2026-08-11 | |
| Mega D. E. Shaw & Co., Inc. | $8,683,824 | 0.30% | 90,400 | Put | 2026-08-14 | |
| Mid RICE HALL JAMES & ASSOCIATES, LLC | $8,409,668 | 0.29% | 87,546 | Shares | 2026-08-07 | |
| Mega RAYMOND JAMES FINANCIAL INC | $8,335,413 | 0.29% | 86,773 | Shares | 2026-08-14 | |
| Mid ALGERT GLOBAL LLC | $7,903,336 | 0.27% | 82,275 | Shares | 2026-08-13 | |
| Large Walleye Trading LLC | $7,559,922 | 0.26% | 78,700 | Put | 2026-08-03 | |
| Large OSAIC HOLDINGS, INC. | $7,296,716 | 0.25% | 75,960 | Shares | 2026-08-14 | |
| Large HRT FINANCIAL LP | $6,461,379 | 0.22% | 67,264 | Shares | 2026-08-14 | |
| Large POLEN CAPITAL MANAGEMENT LLC | $6,355,041 | 0.22% | 66,157 | Shares | 2026-08-04 | |
| Mega FRANKLIN RESOURCES INC | $6,227,665 | 0.22% | 64,831 | Shares | 2026-08-13 | |
| Mid Evergreen Quality Fund GP, Ltd. | $5,992,222 | 0.21% | 62,380 | Shares | 2026-08-14 | |
| Small Pier Capital, LLC | $5,801,447 | 0.20% | 60,394 | Shares | 2026-08-05 | |
| Mega Swiss National Bank Bank | $5,753,994 | 0.20% | 59,900 | Shares | 2026-08-11 | |
| Mega ROYAL BANK OF CANADA Bank | $5,381,952 | 0.19% | 56,027 | Shares | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $5,073,407 | 0.18% | 52,815 | Shares | 2026-08-13 | |
| Small Bouvel Investment Partners, LLC | $4,692,723 | 0.16% | 48,852 | Shares | 2026-07-17 | |
| Mid HERITAGE INVESTORS MANAGEMENT CORP | $4,645,749 | 0.16% | 48,363 | Shares | 2026-08-04 | |
| Large CAPITAL FUND MANAGEMENT S.A. | $4,312,325 | 0.15% | 44,892 | Shares | 2026-08-13 | |
| Small Harvest Investment Services, LLC | $4,261,125 | 0.15% | 44,359 | Shares | 2026-08-14 | |
| Large Schonfeld Strategic Advisors LLC | $4,236,822 | 0.15% | 44,106 | Shares | 2026-08-14 | |
| Mega Russell Investments Group, Ltd. | $3,997,150 | 0.14% | 41,611 | Shares | 2026-08-06 | |
| Mid Premier Fund Managers Ltd | $3,973,233 | 0.14% | 41,362 | Shares | 2026-07-22 | |
| Large Walleye Trading LLC | $3,957,672 | 0.14% | 41,200 | Call | 2026-08-03 | |
| Mega DEUTSCHE BANK AG\ Bank | $3,934,616 | 0.14% | 40,960 | Shares | 2026-08-07 | |
| Mega RHUMBLINE ADVISERS | $3,730,490 | 0.13% | 38,835 | Shares | 2026-08-12 | |
| Mega CITIGROUP INC | $3,603,978 | 0.13% | 37,518 | Shares | 2026-08-03 | |
| Small INTRINSIC EDGE CAPITAL MANAGEMENT LLC | $3,515,796 | 0.12% | 36,600 | Shares | 2026-08-12 | |
| Mega ALLIANCEBERNSTEIN L.P. | $3,505,901 | 0.12% | 36,497 | Shares | 2026-08-14 | |
| Mid Informed Momentum Co LLC | $3,489,091 | 0.12% | 36,322 | Shares | 2026-08-13 | |
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $3,456,911 | 0.12% | 35,987 | Shares | 2026-08-13 | |
| Small SHARIAPORTFOLIO, INC. | $3,310,227 | 0.11% | 34,460 | Shares | 2026-08-11 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension | $3,301,582 | 0.11% | 34,370 | Shares | 2026-08-24 | |
| Mega WELLS FARGO & COMPANY/MN | $3,282,368 | 0.11% | 34,170 | Shares | 2026-08-14 | |
| Mega D. E. Shaw & Co., Inc. | $3,227,616 | 0.11% | 33,600 | Call | 2026-08-14 | |
| Mega LPL Financial LLC | $3,115,225 | 0.11% | 32,430 | Shares | 2026-08-07 | |
| Mega AMERIPRISE FINANCIAL INC | $3,068,732 | 0.11% | 31,946 | Shares | 2026-08-14 | |
| Mid Havemeyer Place LP | $3,001,490 | 0.10% | 31,246 | Shares | 2026-08-13 | |
| Mega UBS Group AG | $2,872,194 | 0.10% | 29,900 | Put | 2026-08-13 | |
| Large Cambridge Investment Research Advisors, Inc. | $2,647,413 | 0.09% | 27,560 | Shares | 2026-07-30 | |
| Mega SG Americas Securities, LLC Broker-Dealer | $2,581,804 | 0.09% | 26,877 | Shares | 2026-08-07 | |
| Mid Alphadyne Asset Management LP | $2,487,954 | 0.09% | 25,900 | Put | 2026-08-14 | |
| Mid Sand Hill Global Advisors, LLC | $2,468,742 | 0.09% | 25,700 | Shares | 2026-08-11 |
Key facts
CIK
1040470
CUSIP
00760J108
13F (30d)
217 filings
215 filers
Visit website
Investor relations