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. Holder counts are more reliable. Shares outstanding: 29.0m as of 2024-07-15, 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 ≈ $11.17. Options: 17 managers hold calls ($14.7m notional), 16 hold puts ($12.0m).
Trends to Q2 2024
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 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 77 | 38 |
| Q1 2023 | 85 | 69 |
| Q2 2023 | 94 | 76 |
| Q3 2023 | 101 | 69 |
| Q4 2023 | 113 | 76 |
| Q1 2024 | 68 | 106 |
| Q2 2024 | 75 | 74 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $56.1m | $45.7m | 0.81 |
| Q4 2023 | $50.3m | $23.4m | 0.46 |
| Q1 2024 | $18.9m | $20.3m | 1.07 |
| Q2 2024 | $14.7m | $12.0m | 0.82 |
Biggest buyers
| FEDERATED HERMES, INC. | Added | +974.0k |
| BAILLIE GIFFORD & CO | Added | +842.0k |
| TWO SIGMA INVESTMENTS, LP | Added | +287.9k |
| RICE HALL JAMES & ASSOCIATES, LLC | Added | +262.5k |
| CITADEL ADVISORS LLC | Added | +257.4k |
| Apis Capital Advisors, LLC | New | +191.0k |
| Pier Capital, LLC | Added | +189.4k |
| DIKER MANAGEMENT LLC | New | +150.0k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | Added | +140.2k |
| JPMORGAN CHASE & CO | Added | +114.3k |
Biggest sellers
| MORGAN STANLEY | Reduced | -1.1m |
| AMERIPRISE FINANCIAL INC | Reduced | -750.3k |
| Weiss Asset Management LP | Sold out | -559.8k |
| OBERWEIS ASSET MANAGEMENT INC/ | Reduced | -433.5k |
| BANK OF MONTREAL /CAN/ | Reduced | -206.6k |
| FMR LLC | Reduced | -173.5k |
| NEXT CENTURY GROWTH INVESTORS LLC | Sold out | -165.3k |
| NOMURA HOLDINGS INC | Reduced | -144.8k |
| BlackRock Inc. | Reduced | -131.9k |
| AQR CAPITAL MANAGEMENT LLC | Sold out | -91.1k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $4.2m374.4k shares |
| CAPITAL FUND MANAGEMENT S.A. | Reduced | $1.9m165.9k shares |
| CITADEL ADVISORS LLC | Added | $1.5m138.7k shares |
| SIMPLEX TRADING, LLC | Reduced | $984.0k88.1k shares |
| WOLVERINE TRADING, LLC | Reduced | $912.6k81.7k shares |
| GROUP ONE TRADING LLC | Added | $866.8k77.6k shares |
| Squarepoint Ops LLC | Reduced | $848.9k76.0k shares |
| TWO SIGMA SECURITIES, LLC | Reduced | $722.7k64.7k shares |
| D. E. Shaw & Co., Inc. | Added | $702.6k62.9k shares |
| IMC-Chicago, LLC | Added | $573.0k51.3k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $5.1m452.4k shares |
| IMC-Chicago, LLC | Reduced | $1.2m107.7k shares |
| CITADEL ADVISORS LLC | Reduced | $988.5k88.5k shares |
| SIMPLEX TRADING, LLC | Reduced | $839.0k75.2k shares |
| CAPITAL FUND MANAGEMENT S.A. | Reduced | $740.6k66.3k shares |
| WOLVERINE TRADING, LLC | Reduced | $631.1k56.5k shares |
| JANE STREET GROUP, LLC | Reduced | $533.9k47.8k shares |
| TWO SIGMA SECURITIES, LLC | Reduced | $439.0k39.3k shares |
| GTS SECURITIES LLC | Added | $422.2k37.8k shares |
| GROUP ONE TRADING LLC | Reduced | $397.7k35.6k 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 in Q2 2024
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 |
|---|---|---|---|---|---|
| Q3 2022 | 0 | — | 2 | $1.0m | — |
| Q4 2022 | 0 | — | 9 | $5.9m | — |
| Q1 2023 | 0 | — | 11 | $25.4m | $2.0m |
| Q2 2023 | 0 | — | 4 | $1.5m | — |
| Q3 2023 | 0 | — | 9 | $23.4m | — |
| Q4 2023 | 1 | $28.1k | 2 | $44.1k | — |
| Q1 2024 | 1 | $53.6k | 3 | $151.7k | — |
| Q2 2024 | 0 | — | 0 | — | — |
None reported in Q2 2024.
Holders, Q2 2024
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.00% of their portfolio | 2.1m $23.5m | Added +7.9k |
| BlackRock Inc. 0.00% of their portfolio | 1.9m $21.3m | Reduced -131.9k |
| BAILLIE GIFFORD & CO 0.01% of their portfolio | 1.7m $18.7m | Added +842.0k |
| AWM Investment Company, Inc. 1.89% of their portfolio | 1.3m $14.0m | Added +26.2k |
| FEDERATED HERMES, INC. 0.03% of their portfolio | 1.1m $12.3m | Added +974.0k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 808.6k $9.0m | Reduced -206.6k |
| Halter Ferguson Financial Inc. 5.84% of their portfolio | 736.5k $8.2m | Added +110.9k |
| NOMURA HOLDINGS INC 0.05% of their portfolio | 666.2k $7.4m | Reduced -144.8k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 620.6k $6.9m | Added +11.6k |
| STATE STREET CORP 0.00% of their portfolio | 563.0k $6.3m | Added +532 |
| OBERWEIS ASSET MANAGEMENT INC/ 0.37% of their portfolio | 534.4k $6.0m | Reduced -433.5k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 384.7k $4.3m | Reduced -750.3k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 352.1k $3.9m | Added +257.4k |
| RICE HALL JAMES & ASSOCIATES, LLC 0.23% of their portfolio | 339.8k $3.8m | Added +262.5k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 334.6k $3.7m | Added +287.9k |
| Amitell Capital Pte Ltd 3.13% of their portfolio | 325.7k $3.6m | Unchanged |
| Pier Capital, LLC 0.51% of their portfolio | 308.9k $3.5m | Added +189.4k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 302.3k $3.4m | Added +102.7k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.02% of their portfolio | 288.6k $3.2m | Added +140.2k |
| GSA CAPITAL PARTNERS LLP 0.18% of their portfolio | 232.7k $2.6m | Added +63.5k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 230.6k $2.6m | Added +86.4k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 230.0k $2.6m | Reduced -17.6k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 217.7k $2.4m | Added +5.6k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 191.2k $2.1m | Added +100.1k |
| Apis Capital Advisors, LLC 1.57% of their portfolio | 191.0k $2.1m | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 181.7k $2.0m | Added +114.3k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 173.9k $1.9m | Added +55.4k |
| ROYCE & ASSOCIATES LP 0.02% of their portfolio | 171.8k $1.9m | Added +10.0k |
| FMR LLC 0.00% of their portfolio | 160.1k $1.8m | Reduced -173.5k |
| MORGAN STANLEY 0.00% of their portfolio | 158.4k $1.8m | Reduced -1.1m |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 158.4k $1.8m | Added +9.3k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 152.4k $1.7m | Added +64.4k |
| DIKER MANAGEMENT LLC 1.42% of their portfolio | 150.0k $1.7m | New |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 144.0k $1.6m | Reduced -89.4k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 126.1k $1.4m | Reduced -3.9k |
| BARCLAYS PLC 0.00% of their portfolio | 110.4k $1.2m | Reduced -15.5k |
| IMC-Chicago, LLC 0.04% of their portfolio | 104.2k $1.2m | Added +20.1k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 102.0k $1.1m | Added +6.9k |
| Squarepoint Ops LLC 0.00% of their portfolio | 89.1k $995.5k | New |
| ExodusPoint Capital Management, LP 0.01% of their portfolio | 82.5k $922.0k | New |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 73.3k $819.1k | Reduced -17.4k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 67.9k $758.0k | New |
| ARDSLEY ADVISORY PARTNERS LP 0.12% of their portfolio | 60.0k $670.2k | Added +35.0k |
| Phoenix Financial Ltd. 0.01% of their portfolio | 57.0k $636.7k | New |
| Bouvel Investment Partners, LLC 0.24% of their portfolio | 56.3k $628.3k | Added +1.7k |
| AVIVA PLC 0.00% of their portfolio | 53.7k $599.8k | Added +9.2k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 50.7k $565.9k | Added +1.1k |
| HERITAGE INVESTORS MANAGEMENT CORP 0.02% of their portfolio | 48.4k $541.0k | Unchanged |
| KENNEDY CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 48.3k $539.4k | Reduced -43.3k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 46.1k $514.9k | Added +22.4k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 39.3k $439.3k | Added +1.4k |
| SIMPLEX TRADING, LLC 0.01% of their portfolio | 32.8k $366.0k | Reduced -6.6k |
| Invesco Ltd. 0.00% of their portfolio | 32.1k $358.8k | Added +17.4k |
| Inspire Investing, LLC 0.04% of their portfolio | 32.1k $358.5k | Added +3.1k |
| UBS Group AG 0.00% of their portfolio | 31.6k $352.7k | Reduced -31.3k |
| Sanctuary Advisors, LLC 0.00% of their portfolio | 31.5k $361.2k | First filing |
| Verition Fund Management LLC 0.00% of their portfolio | 29.0k $324.4k | New |
| GTS SECURITIES LLC 0.01% of their portfolio | 29.0k $323.4k | Added +11.0k |
| GREENWOOD CAPITAL ASSOCIATES LLC 0.04% of their portfolio | 28.2k $315.5k | Added +7.4k |
| Penbrook Management LLC 0.19% of their portfolio | 27.6k $308.1k | New |
| GUGGENHEIM CAPITAL LLC 0.00% of their portfolio | 24.7k $275.9k | Added +6.8k |
| Centiva Capital, LP 0.01% of their portfolio | 23.4k $261.0k | Reduced -8.4k |
| WOLVERINE TRADING, LLC 0.00% of their portfolio | 22.0k $246.2k | Added +4.8k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 19.7k $220.0k | Added +3.6k |
| Walleye Capital LLC 0.00% of their portfolio | 19.0k $212.8k | Reduced -57.7k |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 18.5k $206.6k | New |
| TWO SIGMA SECURITIES, LLC 0.01% of their portfolio | 16.6k $185.9k | New |
| MetLife Investment Management, LLC 0.00% of their portfolio | 15.1k $169.2k | Added +1.5k |
| Corebridge Financial, Inc. 0.00% of their portfolio | 14.9k $166.3k | First filing |
| JT Stratford LLC 0.03% of their portfolio | 14.9k $166.0k | New |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 14.6k $163.6k | First filing |
| OCCUDO QUANTITATIVE STRATEGIES LP 0.03% of their portfolio | 14.3k $159.3k | New |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 14.2k $158.8k | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 12.9k $145.0k | Reduced -14.3k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 12.5k $140.0k | Reduced -12.1k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 11.9k $132.8k | Added +1.3k |
| ARS Investment Partners, LLC 0.01% of their portfolio | 11.7k $131.2k | New |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 11.0k $123.4k | Added +769 |
| Clarity Financial LLC 0.02% of their portfolio | 11.0k $123.2k | New |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 11.0k $122.9k | Reduced -11.0k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 11.0k $122.5k | Reduced -343 |
| Versor Investments LP 0.02% of their portfolio | 10.5k $117.3k | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 10.4k $116.5k | Added +5 |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 9.8k $109.9k | Reduced -6.0k |
| Parallax Volatility Advisers, L.P. 0.00% of their portfolio | 8.5k $95.1k | New |
| EntryPoint Capital, LLC 0.04% of their portfolio | 7.0k $78.1k | New |
| CITIGROUP INC 0.00% of their portfolio | 6.1k $68.0k | Added +1.3k |
| Walleye Trading LLC 0.00% of their portfolio | 5.7k $64.0k | Reduced -7.2k |
| AlphaQuest LLC 0.01% of their portfolio | 4.2k $47.2k | New |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 3.9k $43.3k | Added +3.3k |
| Legal & General Group Plc 0.00% of their portfolio | 3.1k $34.1k | Reduced -24.1k |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 2.6k $28.7k | Unchanged |
| nVerses Capital, LLC 0.01% of their portfolio | 2.2k $24.6k | New |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 2.0k $22.4k | Reduced -25.9k |
| Steward Partners Investment Advisory, LLC 0.00% of their portfolio | 1.8k $20.1k | Reduced -7.6k |
| Parallel Advisors, LLC 0.00% of their portfolio | 1.5k $16.3k | Added +160 |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 1.4k $15.6k | Reduced -6.7k |
| Redwood Wealth Management Group, LLC 0.01% of their portfolio | 1.3k $14.5k | New |
| TD Waterhouse Canada Inc. 0.00% of their portfolio | 1.2k $13.9k | Unchanged |
| AMALGAMATED BANK 0.00% of their portfolio | 872 $10.0k | Unchanged |