AEHR TEST SYS AEHR
COM · Common Stock · CUSIP 00760J108 · ISIN US00760J1088
Semiconductor manufacturing support company
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($705.4k this quarter). Holder counts are more reliable. Shares outstanding: 32.6m as of 2026-07-20, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $95.93. Options: 20 managers hold calls ($439.0m notional), 16 hold puts ($416.4m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 85 |
| Q4 2022 | 129 |
| Q1 2023 | 145 |
| Q2 2023 | 153 |
| Q3 2023 | 154 |
| Q4 2023 | 169 |
| Q1 2024 | 133 |
| Q2 2024 | 120 |
| Q3 2024 | 127 |
| Q4 2024 | 133 |
| Q1 2025 | 116 |
| Q2 2025 | 122 |
| Q3 2025 | 149 |
| Q4 2025 | 150 |
| Q1 2026 | 191 |
| Q2 2026 | 262 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 69 | 57 |
| Q4 2024 | 63 | 64 |
| Q1 2025 | 59 | 73 |
| Q2 2025 | 72 | 49 |
| Q3 2025 | 90 | 58 |
| Q4 2025 | 84 | 69 |
| Q1 2026 | 117 | 64 |
| Q2 2026 | 174 | 100 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $116.9m | $76.6m | 0.66 |
| Q4 2025 | $80.4m | $40.1m | 0.50 |
| Q1 2026 | $130.9m | $54.4m | 0.42 |
| Q2 2026 | $439.0m | $416.4m | 0.95 |
Biggest buyers
| TWO SIGMA INVESTMENTS, LP | Added | +950.2k |
| D. E. Shaw & Co., Inc. | Added | +835.8k |
| JPMORGAN CHASE & CO | Added | +542.2k |
| JANE STREET GROUP, LLC | Added | +476.5k |
| Connor, Clark & Lunn Investment Management Ltd. | Added | +451.9k |
| BlackRock, Inc. | Added | +372.6k |
| MARSHALL WACE, LLP | Added | +372.5k |
| T. Rowe Price Investment Management, Inc. | New | +318.1k |
| MORGAN STANLEY | Added | +314.7k |
| CITADEL ADVISORS LLC | Added | +259.4k |
Biggest sellers
| AWM Investment Company, Inc. | Reduced | -1.2m |
| FMR LLC | Reduced | -1.1m |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -842.3k |
| BAILLIE GIFFORD & CO | Reduced | -797.1k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Sold out | -513.3k |
| GOLDMAN SACHS GROUP INC | Reduced | -452.0k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | Sold out | -344.2k |
| GILDER GAGNON HOWE & CO LLC | Reduced | -344.1k |
| NEXT CENTURY GROWTH INVESTORS LLC | Reduced | -344.0k |
| Walleye Capital LLC | Reduced | -267.0k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $114.4m1.2m shares |
| CITADEL ADVISORS LLC | Added | $60.7m632.4k shares |
| GRATIA CAPITAL, LLC | Reduced | $55.3m575.5k shares |
| Caption Management, LLC | Added | $47.0m489.0k shares |
| IMC-Chicago, LLC | Added | $45.0m468.3k shares |
| JANE STREET GROUP, LLC | Added | $34.8m362.7k shares |
| GROUP ONE TRADING LLC | Added | $31.7m330.3k shares |
| UBS Group AG | Added | $14.4m150.0k shares |
| Point72 Asset Management, L.P. | Reduced | $11.2m116.3k shares |
| PEAK6 LLC | Added | $11.1m116.0k shares |
Biggest puts
| JANE STREET GROUP, LLC | Added | $108.9m1.1m shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $77.0m801.4k shares |
| CITADEL ADVISORS LLC | Added | $71.4m743.0k shares |
| IMC-Chicago, LLC | Added | $66.8m695.7k shares |
| GROUP ONE TRADING LLC | Added | $49.0m510.4k shares |
| Point72 Asset Management, L.P. | Reduced | $10.0m103.6k shares |
| D. E. Shaw & Co., Inc. | New | $8.7m90.4k shares |
| Walleye Trading LLC | Added | $7.6m78.7k shares |
| HRT FINANCIAL LP | Added | $6.2m64.5k shares |
| SIMPLEX TRADING, LLC | Added | $3.6m37.5k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| JANE STREET GROUP, LLC 13G · passive investor new · filed 2026-07-29 | 5.1% |
Fell to 5% or below in the last year: AWM Investment Company, Inc. (1.1%, 2026-08-14), FMR LLC (3.2%, 2026-08-06), VANGUARD GROUP INC (0.0%, 2026-03-26), BAILLIE GIFFORD & CO (4.3%, 2026-02-09)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 1 | $45.4k | — |
| Q3 2025 | 0 | — | 3 | $506.8k | — |
| Q4 2025 | 0 | — | 2 | $377.5k | — |
| Q1 2026 | 0 | — | 3 | $645.7k | — |
| Q2 2026 | 0 | — | 13 | $41.2m | — |
| Q3 2026 | 0 | — | 9 | $18.9m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-08-17 | ROGERS VERNON Exec VP of Sales & Mktg. | Sold | $574.2k4.0k shares |
| 2026-08-14 | POSEDEL RHEA J Director · By Trust | Sold | $836.2k6.0k shares |
| 2026-08-14 | SLAYEN HOWARD T Director | Sold | $758.3k5.7k shares |
| 2026-08-14 | ROGERS VERNON Exec VP of Sales & Mktg. | Sold | $273.0k2.0k shares |
| 2026-08-13 | SALAMONE ALBERTO EVP, PPBI BUSINESS | Sold | $1.2m9.7k shares |
| 2026-08-12 | Erickson Gayn President and CEO, director · By Trust | Sold | $5.2m40.0k shares |
| 2026-08-12 | SCOTT GEOFFREY GATES Director · By Spouse | Sold | $2.6m20.0k shares |
| 2026-08-12 | ENGINEER ADIL Chief Operating Officer | Sold | $2.0m15.0k shares |
| 2026-08-12 | POSEDEL RHEA J Director · By Trust | Sold | $1.1m8.4k shares |
| 2026-08-12 | OLIPHANT LAURA Director | Sold | $228.4k1.7k shares |
| 2026-08-10 | SPORCK ALISTAIR N VP Contactor Business Unit | Sold | $108.5k1.0k shares |
| 2026-08-04 | SLAYEN HOWARD T Director | Sold | $2.2m20.0k shares |
| 2026-08-04 | SPORCK ALISTAIR N VP Contactor Business Unit | Sold | $201.9k2.0k shares |
| 2026-07-16 | SCOTT GEOFFREY GATES Director · By Spouse | Sold | $1.6m20.0k shares |
| 2026-05-14 | Siu Chris CFO | Sold | $170.8k1.6k shares |
| 2026-05-14 | Siu Chris CFO | Sold | $50.8k470 shares |
| 2026-05-13 | SLAYEN HOWARD T Director | Sold | $714.2k6.8k shares |
| 2026-04-22 | POSEDEL RHEA J Director | Sold | $1.7m17.1k shares |
| 2026-04-22 | SPORCK ALISTAIR N VP Contactor Business Unit · By Trust | Sold | $187.0k2.0k shares |
| 2026-04-22 | POSEDEL RHEA J Director | Sold | $57.4k604 shares |
| 2026-04-21 | SCOTT GEOFFREY GATES Director · By Spouse | Sold | $4.8m50.0k shares |
| 2026-04-21 | SALAMONE ALBERTO EVP, PPBI BUSINESS | Sold | $1.4m15.0k shares |
| 2026-04-21 | SCOTT GEOFFREY GATES Director · By Trust | Sold | $910.0k10.0k shares |
| 2026-04-21 | POSEDEL RHEA J Director | Sold | $843.7k8.8k shares |
| 2026-04-21 | ROGERS VERNON Exec VP of Sales & Mktg. | Sold | $610.3k6.5k shares |
| 2026-04-20 | SALAMONE ALBERTO EVP, PPBI BUSINESS | Sold | $1.3m15.0k shares |
| 2026-04-20 | POSEDEL RHEA J Director · By Trust | Sold | $660.7k7.5k shares |
| 2026-04-20 | ROGERS VERNON Exec VP of Sales & Mktg. | Sold | $450.0k5.0k shares |
| 2026-04-20 | ROGERS VERNON Exec VP of Sales & Mktg. | Sold | $218.8k2.4k shares |
| 2026-04-17 | SLAYEN HOWARD T Director | Sold | $2.1m25.0k shares |
The latest 30 of 52 trades.
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 2.7m $255.5m | Added +372.6k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 1.3m $126.8m | Added +38.5k |
| D. E. Shaw & Co., Inc. 0.07% of their portfolio | 1.2m $113.1m | Added +835.8k |
| TWO SIGMA INVESTMENTS, LP 0.08% of their portfolio | 1.2m $111.9m | Added +950.2k |
| FMR LLC 0.00% of their portfolio | 1.0m $96.7m | Reduced -1.1m |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 966.7k $92.9m | Added +48.8k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 875.5k $84.1m | Added +149.8k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 810.0k $77.8m | Reduced -452.0k |
| JANE STREET GROUP, LLC 0.05% of their portfolio | 753.5k $72.4m | Added +476.5k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 732.5k $69.6m | Added +542.2k |
| STATE STREET CORP 0.00% of their portfolio | 712.9k $68.5m | Added +89.6k |
| Connor, Clark & Lunn Investment Management Ltd. 0.12% of their portfolio | 670.8k $64.4m | Added +451.9k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 507.0k $48.7m | Reduced -842.3k |
| MORGAN STANLEY 0.00% of their portfolio | 480.4k $46.1m | Added +314.7k |
| NEXT CENTURY GROWTH INVESTORS LLC 2.09% of their portfolio | 410.7k $39.5m | Reduced -344.0k |
| CITADEL ADVISORS LLC 0.02% of their portfolio | 400.7k $38.5m | Added +259.4k |
| MARSHALL WACE, LLP 0.03% of their portfolio | 382.7k $36.8m | Added +372.5k |
| AWM Investment Company, Inc. 3.12% of their portfolio | 374.8k $36.0m | Reduced -1.2m |
| T. Rowe Price Investment Management, Inc. 0.02% of their portfolio | 318.1k $30.6m | New |
| Invesco Ltd. 0.00% of their portfolio | 296.2k $28.5m | Added +10.5k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 277.0k $26.6m | Added +24.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 249.5k $24.0m | Added +14.0k |
| Science & Technology Partners, L.P. 4.03% of their portfolio | 249.0k $23.9m | New |
| LORD, ABBETT & CO. LLC 0.07% of their portfolio | 247.6k $23.8m | Added +68.4k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 238.5k $22.9m | Added +85.6k |
| Driehaus Capital Management LLC 0.13% of their portfolio | 238.4k $22.9m | New |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 212.9k $20.4m | Added +15.7k |
| TUDOR INVESTMENT CORP ET AL 0.08% of their portfolio | 204.6k $19.6m | Added +156.4k |
| BAILLIE GIFFORD & CO 0.02% of their portfolio | 203.9k $19.6m | Reduced -797.1k |
| Trexquant Investment LP 0.12% of their portfolio | 201.9k $19.4m | New |
| UBS Group AG 0.00% of their portfolio | 169.1k $16.2m | Reduced -77.6k |
| NEUBERGER BERMAN GROUP LLC 0.01% of their portfolio | 167.7k $16.1m | New |
| BARD ASSOCIATES INC 3.35% of their portfolio | 156.9k $15.1m | Reduced -22.2k |
| KADENSA CAPITAL Ltd 3.18% of their portfolio | 155.3k $14.9m | New |
| Penn Capital Management Company, LLC 0.92% of their portfolio | 150.5k $14.5m | New |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 145.6k $14.0m | Added +139.3k |
| BERKSHIRE CAPITAL HOLDINGS INC 2.96% of their portfolio | 142.6k $13.7m | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.02% of their portfolio | 138.0k $13.3m | Added +76.5k |
| RENAISSANCE TECHNOLOGIES LLC 0.02% of their portfolio | 134.5k $12.9m | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 121.1k $11.6m | Added +64.3k |
| Kultura Capital Management LP 5.20% of their portfolio | 117.9k $11.3m | Added +37.7k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 108.9k $10.5m | Added +13.1k |
| Nuveen, LLC 0.00% of their portfolio | 102.6k $9.9m | Added +32.3k |
| BARCLAYS PLC 0.00% of their portfolio | 101.2k $9.7m | Added +49.0k |
| GILDER GAGNON HOWE & CO LLC 0.10% of their portfolio | 100.2k $9.6m | Reduced -344.1k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 93.6k $9.0m | Added +4.2k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 93.4k $9.0m | Added +367 |
| RICE HALL JAMES & ASSOCIATES, LLC 0.41% of their portfolio | 87.5k $8.4m | Reduced -184.7k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 86.8k $8.3m | Added +11.5k |
| ALGERT GLOBAL LLC 0.09% of their portfolio | 82.3k $7.9m | New |
| OSAIC HOLDINGS, INC. 0.01% of their portfolio | 76.0k $7.3m | Reduced -29.0k |
| HRT FINANCIAL LP 0.02% of their portfolio | 67.3k $6.5m | New |
| POLEN CAPITAL MANAGEMENT LLC 0.05% of their portfolio | 66.2k $6.4m | Reduced -13.2k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 64.8k $6.2m | Added +51.6k |
| Evergreen Quality Fund GP, Ltd. 0.10% of their portfolio | 62.4k $6.0m | New |
| Pier Capital, LLC 0.77% of their portfolio | 60.4k $5.8m | Reduced -66.6k |
| Swiss National Bank 0.00% of their portfolio | 59.9k $5.8m | Added +2.4k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 56.0k $5.4m | Reduced -3.9k |
| Cambridge Investment Research Advisors, Inc. 0.01% of their portfolio | 55.1k $5.3m | Added +23.5k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 52.8k $5.1m | Added +18.4k |
| Bouvel Investment Partners, LLC 1.06% of their portfolio | 48.9k $4.7m | Reduced -23.0k |
| HERITAGE INVESTORS MANAGEMENT CORP 0.13% of their portfolio | 48.4k $4.6m | Reduced -50 |
| CAPITAL FUND MANAGEMENT S.A. 0.03% of their portfolio | 44.9k $4.3m | New |
| Harvest Investment Services, LLC 0.66% of their portfolio | 44.4k $4.3m | Added +21.1k |
| Schonfeld Strategic Advisors LLC 0.02% of their portfolio | 44.1k $4.2m | New |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 41.6k $4.0m | Added +33.5k |
| Premier Fund Managers Ltd 0.36% of their portfolio | 41.4k $3.9m | New |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 41.0k $3.9m | Added +14.2k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 38.8k $3.7m | Added +2.0k |
| CITIGROUP INC 0.00% of their portfolio | 37.5k $3.6m | Added +30.4k |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC 0.43% of their portfolio | 36.6k $3.5m | New |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 36.5k $1.4m | Added +77 |
| Informed Momentum Co LLC 0.31% of their portfolio | 36.3k $3.5m | New |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 36.0k $3.5m | New |
| SHARIAPORTFOLIO, INC. 1.17% of their portfolio | 34.5k $3.3m | New |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 34.4k $3.3m | Reduced -7.2k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 34.2k $3.3m | Added +10.6k |
| LPL Financial LLC 0.00% of their portfolio | 32.4k $3.1m | Added +21.3k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 31.9k $3.1m | New |
| Havemeyer Place LP 0.30% of their portfolio | 31.2k $3.0m | New |
| SG Americas Securities, LLC 0.00% of their portfolio | 26.9k $2.6m | Added +15.5k |
| Sand Hill Global Advisors, LLC 0.07% of their portfolio | 25.7k $2.5m | New |
| Quantinno Capital Management LP 0.00% of their portfolio | 24.0k $2.3m | Reduced -4.5k |
| Legal & General Group Plc 0.00% of their portfolio | 23.8k $2.3m | Reduced -999 |
| Capstone Capital Management Ltd 0.94% of their portfolio | 21.9k $2.1m | New |
| Engineers Gate Manager LP 0.03% of their portfolio | 21.5k $2.1m | Added +1.1k |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 21.5k $2.1m | New |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 20.9k $2.0m | Added +1.7k |
| KP Management LLC 0.40% of their portfolio | 20.0k $1.9m | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.00% of their portfolio | 19.0k $1.8m | Reduced -11.6k |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 17.8k $1.7m | Reduced -1.8k |
| BLAIR WILLIAM & CO/IL 0.00% of their portfolio | 17.8k $1.7m | New |
| MetLife Investment Management, LLC 0.01% of their portfolio | 17.8k $1.7m | Added +1.3k |
| LAUREL OAK WEALTH MANAGEMENT, LLC 0.25% of their portfolio | 17.7k $1.7m | Reduced -21.0k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 17.6k $1.7m | Reduced -4.3k |
| GROUP ONE TRADING LLC 0.05% of their portfolio | 17.3k $1.7m | Added +4.5k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 16.9k $1.6m | Reduced -185.2k |
| Pictet Asset Management Holding SA 0.00% of their portfolio | 16.7k $1.6m | Added +10.9k |
| Cetera Investment Advisers 0.00% of their portfolio | 16.7k $1.6m | Added +2.7k |
| Tidal Investments LLC 0.00% of their portfolio | 15.7k $1.5m | New |