DaveManuel.com · Institutional Ownership · Who Owns It
AEHR TEST SYS (AEHR)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
271
Reporting holders
$3.1B
Reported value
71.5%
Of shares outstanding
14.2%
Calls
13.3%
Puts
+74
Holder change
Institutions report 23,336,690 shares against 32,620,450 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $255.5M | 2,659,542 | 0.00% | 8q | +16.3%+$35.8M |
| JANE STREET GROUP, LLC | $216.2M incl. $143.8M options CALL+PUT | 753,523 | 0.02% | 11q | +172.0%+$136.7M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $193.0M incl. $191.4M options CALL+PUT | 16,850 | 0.02% | 20q | -91.7%-$2.1B |
| CITADEL ADVISORS LLC | $170.6M incl. $132.1M options CALL+PUT | 400,732 | 0.02% | 21q | +183.6%+$110.5M |
| VANGUARD CAPITAL MANAGEMENT LLC | $126.8M | 1,320,350 | 0.00% | 2q | +3.0%+$3.7M |
| D. E. Shaw & Co., Inc. | $125.0M incl. $11.9M options CALL+PUT | 1,177,421 | 0.06% | 14q | +244.6%+$88.7M |
| TWO SIGMA INVESTMENTS, LP | $113.5M incl. $1.6M options CALL+PUT | 1,164,614 | 0.08% | 4q | +443.3%+$92.6M |
| IMC-Chicago, LLC | $111.8M CALL+PUT | options only | 0.03% | 10q | OPTIONS |
| FMR LLC | $96.7M | 1,006,830 | 0.00% | 19q | -53.0%-$109.1M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $92.9M | 966,659 | 0.00% | 2q | +5.3%+$4.7M |
| GEODE CAPITAL MANAGEMENT, LLC | $84.1M | 875,505 | 0.00% | 31q | +20.6%+$14.4M |
| GROUP ONE TRADING LLC | $82.4M incl. $80.8M options CALL+PUT | 17,271 | 0.12% | 20q | +35.4%+$21.5M |
| GOLDMAN SACHS GROUP INC | $77.8M | 810,036 | 0.01% | 18q | -35.8%-$43.4M |
| JPMORGAN CHASE & CO | $69.6M | 732,547 | 0.00% | 15q | +284.9%+$51.5M |
| STATE STREET CORP | $68.5M | 712,926 | 0.00% | 20q | +14.4%+$8.6M |
| Connor, Clark & Lunn Investment Management Ltd. | $64.4M | 670,758 | 0.12% | 2q | +206.5%+$43.4M |
| GRATIA CAPITAL, LLC | $55.3M CALL | options only | 33.43% | 4q | OPTIONS |
| PRICE T ROWE ASSOCIATES INC /MD/ | $48.7M | 507,035 | 0.00% | 13q | -62.4%-$80.9M |
| Caption Management, LLC | $47.0M CALL | options only | 0.22% | 2q | OPTIONS |
| MORGAN STANLEY | $46.1M | 480,400 | 0.00% | 35q | +190.0%+$30.2M |
| NEXT CENTURY GROWTH INVESTORS LLC | $39.5M | 410,731 | 2.09% | 4q | -45.6%-$33.0M |
| MARSHALL WACE, LLP | $36.8M | 382,738 | 0.03% | 2q | +3648.3%+$35.8M |
| AWM Investment Company, Inc. | $36.0M | 374,808 | 3.12% | 31q | -76.5%-$117.1M |
| UBS Group AG | $33.5M incl. $17.3M options CALL+PUT | 169,123 | 0.00% | 19q | -31.5%-$15.4M |
| T. Rowe Price Investment Management, Inc. | $30.6M | 318,127 | 0.02% | new | NEW |
| Invesco Ltd. | $28.5M | 296,226 | 0.00% | 15q | +3.7%+$1.0M |
| NORTHERN TRUST CORP | $26.6M | 277,020 | 0.00% | 31q | +9.9%+$2.4M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $24.0M | 249,512 | 0.00% | 19q | +5.9%+$1.3M |
| Science & Technology Partners, L.P. | $23.9M | 249,000 | 4.03% | new | NEW |
| LORD, ABBETT & CO. LLC | $23.8M | 247,640 | 0.07% | 2q | +38.1%+$6.6M |
| WELLINGTON MANAGEMENT GROUP LLP | $22.9M | 238,453 | 0.00% | 10q | +56.0%+$8.2M |
| Driehaus Capital Management LLC | $22.9M | 238,422 | 0.13% | new | NEW |
| Point72 Asset Management, L.P. | $21.1M CALL+PUT | options only | 0.02% | 3q | OPTIONS |
| VANGUARD FIDUCIARY TRUST CO | $20.4M | 212,881 | 0.00% | 2q | +8.0%+$1.5M |
| TUDOR INVESTMENT CORP ET AL | $20.1M incl. $451.5K options CALL+PUT | 204,550 | 0.03% | 8q | +324.4%+$15.4M |
| BAILLIE GIFFORD & CO | $19.6M | 203,878 | 0.02% | 12q | -79.6%-$76.6M |
| Trexquant Investment LP | $19.4M | 201,892 | 0.11% | new | NEW |
| NEUBERGER BERMAN GROUP LLC | $16.1M | 167,664 | 0.01% | new | NEW |
| BARD ASSOCIATES INC | $15.1M | 156,900 | 3.35% | 5q | -12.4%-$2.1M |
| KADENSA CAPITAL Ltd | $14.9M | 155,299 | 3.18% | new | NEW |
| Penn Capital Management Company, LLC | $14.5M | 150,547 | 0.92% | new | NEW |
| BNP PARIBAS FINANCIAL MARKETS | $14.0M | 145,612 | 0.00% | 16q | +2205.1%+$13.4M |
| BERKSHIRE CAPITAL HOLDINGS INC | $13.7M | 142,640 | 2.96% | new | NEW |
| HRT FINANCIAL LP | $13.5M incl. $7.0M options OPT | 140,564 | 0.02% | new | NEW |
| NEW YORK STATE COMMON RETIREMENT FUND | $13.3M | 138,047 | 0.02% | 20q | +124.2%+$7.3M |
| RENAISSANCE TECHNOLOGIES LLC | $12.9M | 134,500 | 0.02% | new | NEW |
| Walleye Trading LLC | $12.6M incl. $11.5M options CALL+PUT | 11,663 | 0.01% | 14q | -2.8%-$360.8K |
| PEAK6 LLC | $11.8M CALL+PUT | options only | 0.02% | 2q | OPTIONS |
| BANK OF AMERICA CORP /DE/ | $11.6M | 121,056 | 0.00% | 15q | +113.1%+$6.2M |
| Kultura Capital Management LP | $11.3M | 117,865 | 2.05% | 2q | +47.0%+$3.6M |
| MILLENNIUM MANAGEMENT LLC | $10.5M | 108,877 | 0.00% | 4q | +13.6%+$1.3M |
| Nuveen, LLC | $9.9M | 102,621 | 0.00% | 6q | +45.9%+$3.1M |
| BARCLAYS PLC | $9.7M | 101,249 | 0.00% | 16q | +93.9%+$4.7M |
| GILDER GAGNON HOWE & CO LLC | $9.6M | 100,204 | 0.10% | 4q | -77.4%-$33.1M |
| Bank of New York Mellon Corp | $9.0M | 93,571 | 0.00% | 31q | +4.7%+$400.2K |
| DIMENSIONAL FUND ADVISORS LP | $9.0M | 93,404 | 0.00% | 31q | HELD |
| RICE HALL JAMES & ASSOCIATES, LLC | $8.4M | 87,546 | 0.41% | 10q | -67.8%-$17.7M |
| RAYMOND JAMES FINANCIAL INC | $8.3M | 86,773 | 0.00% | 5q | +15.3%+$1.1M |
| ALGERT GLOBAL LLC | $7.9M | 82,275 | 0.09% | new | NEW |
| OSAIC HOLDINGS, INC. | $7.3M | 75,960 | 0.01% | 24q | -27.7%-$2.8M |
| POLEN CAPITAL MANAGEMENT LLC | $6.4M | 66,157 | 0.05% | 5q | -16.7%-$1.3M |
| FRANKLIN RESOURCES INC | $6.2M | 64,831 | 0.00% | 11q | +389.3%+$5.0M |
| Evergreen Quality Fund GP, Ltd. | $6.0M | 62,380 | 0.10% | new | NEW |
| SIMPLEX TRADING, LLC | $6.0M CALL+PUT | options only | 0.00% | 19q | OPTIONS |
| Pier Capital, LLC | $5.8M | 60,394 | 0.77% | 10q | -52.4%-$6.4M |
| Swiss National Bank | $5.8M | 59,900 | 0.00% | 3q | +4.2%+$230.5K |
| ROYAL BANK OF CANADA | $5.4M | 56,027 | 0.00% | 20q | -6.5%-$375.9K |
| Cambridge Investment Research Advisors, Inc. | $5.3M | 55,126 | 0.01% | 8q | +74.4%+$2.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $5.1M | 52,815 | 0.00% | 3q | +53.6%+$1.8M |
| Bouvel Investment Partners, LLC | $4.7M | 48,852 | 1.06% | 11q | -32.0%-$2.2M |
| HERITAGE INVESTORS MANAGEMENT CORP | $4.6M | 48,363 | 0.13% | 30q | HELD |
| CAPITAL FUND MANAGEMENT S.A. | $4.3M | 44,892 | 0.02% | new | NEW |
| Harvest Investment Services, LLC | $4.3M | 44,359 | 0.66% | 4q | +91.0%+$2.0M |
| Schonfeld Strategic Advisors LLC | $4.2M | 44,106 | 0.02% | new | NEW |
| Russell Investments Group, Ltd. | $4.0M | 41,611 | 0.00% | 13q | +412.1%+$3.2M |
| DEUTSCHE BANK AG\ | $3.9M | 40,960 | 0.00% | 14q | +53.3%+$1.4M |
| Premier Fund Managers Ltd | $3.9M | 41,362 | 0.36% | new | NEW |
| RHUMBLINE ADVISERS | $3.7M | 38,835 | 0.00% | 13q | +5.4%+$192.3K |
| CITIGROUP INC | $3.6M | 37,518 | 0.00% | 16q | +426.3%+$2.9M |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC | $3.5M | 36,600 | 0.36% | new | NEW |
| Informed Momentum Co LLC | $3.5M | 36,322 | 0.31% | new | NEW |
| Alphadyne Asset Management LP | $3.5M CALL+PUT | options only | 0.03% | 2q | OPTIONS |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $3.5M | 35,987 | 0.00% | new | NEW |
| SHARIAPORTFOLIO, INC. | $3.3M | 34,460 | 1.17% | new | NEW |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $3.3M | 34,370 | 0.00% | 4q | -17.4%-$694.4K |
| WELLS FARGO & COMPANY/MN | $3.3M | 34,170 | 0.00% | 20q | +45.1%+$1.0M |
| LPL Financial LLC | $3.1M | 32,430 | 0.00% | 7q | +191.8%+$2.0M |
| AMERIPRISE FINANCIAL INC | $3.1M | 31,946 | 0.00% | new | NEW |
| Havemeyer Place LP | $3.0M | 31,246 | 0.30% | new | NEW |
| SG Americas Securities, LLC | $2.6M | 26,877 | 0.00% | 2q | +136.1%+$1.5M |
| Sand Hill Global Advisors, LLC | $2.5M | 25,700 | 0.07% | new | NEW |
| Quantinno Capital Management LP | $2.3M | 24,017 | 0.00% | 5q | -15.8%-$432.6K |
| Legal & General Group Plc | $2.3M | 23,821 | 0.00% | 15q | -4.0%-$96.0K |
| Capstone Capital Management Ltd | $2.1M | 21,867 | 0.94% | new | NEW |
| Engineers Gate Manager LP | $2.1M | 21,542 | 0.03% | 3q | +5.2%+$102.7K |
| VOYA INVESTMENT MANAGEMENT LLC | $2.1M | 21,484 | 0.00% | new | NEW |
| VANGUARD ASSET MANAGEMENT, Ltd | $2.0M | 20,929 | 0.00% | 2q | +9.1%+$167.4K |
| KP Management LLC | $1.9M | 20,000 | 0.36% | new | NEW |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $1.8M | 19,035 | 0.00% | 3q | -37.8%-$1.1M |
| Vanguard Global Advisers, LLC | $1.7M | 17,841 | 0.00% | 2q | -9.3%-$176.1K |
Showing the largest 100 of 271 reported holders.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-10-29 | 2026-10-24 | Directors or officers departed or appointed | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-12 | Erickson Gayn | President and CEO | Sold | 40,000 | $5.2M ×2 |
| 2026-08-12 | SCOTT GEOFFREY GATES | Director | Sold | 20,000 | $2.6M |
| 2026-08-04 | SLAYEN HOWARD T | Director | Sold | 20,000 | $2.2M |
| 2026-08-12 | ENGINEER ADIL | Chief Operating Officer | Sold | 15,000 | $2.0M ×2 |
| 2026-07-16 | SCOTT GEOFFREY GATES | Director | Sold | 20,000 | $1.6M |
| 2026-08-13 | SALAMONE ALBERTO | EVP, PPBI BUSINESS | Sold | 9,672 | $1.2M ×2 |
| 2026-08-12 | POSEDEL RHEA J | Director | Sold | 8,413 | $1.1M |
| 2026-08-14 | POSEDEL RHEA J | Director | Sold | 5,973 | $836.2K |
| 2026-08-14 | SLAYEN HOWARD T | Director | Sold | 5,700 | $758.3K |
| 2026-05-13-05:00 | SLAYEN HOWARD T | Director | Sold | 6,819 | $714.2K |
| 2026-08-17 | ROGERS VERNON | Exec VP of Sales & Mktg. | Sold | 3,994 | $574.2K |
| 2026-08-14 | ROGERS VERNON | Exec VP of Sales & Mktg. | Sold | 2,000 | $273.0K ×2 |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 63 | $44.3M | 445,082 | 22 | 19 | 14 | 0.0% |
| Q2 2026 | 271 | $3.1B | 23,336,690 | 104 | 73 | 71 | 27.7% |
| Q1 2026 | 197 | $1.0B | 22,541,524 | 58 | 62 | 44 | 18.2% |
| Q4 2025 | 156 | $548.4M | 21,238,310 | 27 | 55 | 40 | 22.0% |
| Q3 2025 | 156 | $806.5M | 20,374,567 | 46 | 40 | 40 | 24.0% |
| Q2 2025 | 129 | $265.6M | 17,643,396 | 28 | 44 | 27 | 14.2% |
| Q1 2025 | 122 | $160.6M | 19,128,175 | 20 | 36 | 40 | 12.9% |
| Q4 2024 | 137 | $396.4M | 20,898,216 | 25 | 41 | 43 | 12.3% |
| Q3 2024 | 128 | $295.3M | 20,784,950 | 28 | 41 | 35 | 9.6% |
| Q2 2024 | 121 | $241.7M | 19,247,267 | 25 | 45 | 34 | 11.0% |
| Q1 2024 | 134 | $282.8M | 19,267,163 | 27 | 39 | 45 | 13.9% |
| Q4 2023 | 174 | $618.7M | 20,542,554 | 50 | 63 | 37 | 11.9% |
| Q3 2023 | 161 | $1.1B | 20,828,333 | 33 | 62 | 39 | 9.7% |
| Q2 2023 | 158 | $910.7M | 19,569,540 | 39 | 55 | 41 | 11.3% |
| Q1 2023 | 150 | $719.4M | 20,055,390 | 43 | 43 | 45 | 13.5% |
| Q4 2022 | 132 | $390.2M | 16,007,139 | 51 | 29 | 33 | 17.5% |
| Q3 2022 | 83 | $443.4M | 30,163,679 | 30 | 24 | 15 | 4.0% |
| Q2 2022 | 74 | $81.0M | 10,019,588 | 13 | 21 | 24 | 7.4% |
| Q1 2022 | 82 | $123.3M | 10,947,492 | 22 | 31 | 11 | 9.8% |
| Q4 2021 | 78 | $425.3M | 14,956,487 | 40 | 15 | 18 | 15.0% |
| Q3 2021 | 42 | $128.6M | 7,992,191 | 29 | 7 | 5 | 14.7% |
| Q2 2021 | 18 | $12.7M | 4,619,074 | 2 | 3 | 3 | 0.0% |
| Q1 2021 | 20 | $12.2M | 4,851,985 | 3 | 7 | 4 | 0.0% |
| Q4 2020 | 21 | $12.6M | 4,981,122 | 3 | 7 | 4 | 0.0% |
| Q3 2020 | 21 | $7.8M | 5,584,536 | 4 | 4 | 6 | 0.0% |
| Q2 2020 | 19 | $11.8M | 6,060,456 | 1 | 6 | 3 | 0.0% |
| Q1 2020 | 21 | $10.0M | 5,966,584 | 2 | 6 | 5 | 0.0% |
| Q4 2019 | 24 | $11.2M | 5,593,190 | 5 | 2 | 6 | 0.0% |
| Q3 2019 | 22 | $10.2M | 5,701,289 | 3 | 1 | 8 | 0.0% |
| Q2 2019 | 20 | $9.6M | 5,834,992 | 0 | 3 | 4 | 0.0% |
| Q1 2019 | 23 | $9.4M | 6,828,990 | 3 | 3 | 7 | 0.0% |
| Q4 2018 | 24 | $8.5M | 5,994,795 | 1 | 0 | 1 | 0.0% |