GSI TECHNOLOGY INC (GSIT)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
Institutions report 13,790,776 shares against 38,246,573 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. | $18.6M | 2,399,846 | 0.00% | 8q | +341.1%+$14.3M |
| VANGUARD CAPITAL MANAGEMENT LLC | $10.4M | 1,350,367 | 0.00% | 2q | +5.6%+$556.1K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $8.8M | 1,136,693 | 0.00% | 2q | +53.1%+$3.0M |
| MARSHALL WACE, LLP | $8.7M | 1,122,703 | 0.01% | 5q | +75.7%+$3.7M |
| TWO SIGMA INVESTMENTS, LP | $6.8M | 875,894 | 0.00% | 12q | +65.2%+$2.7M |
| GEODE CAPITAL MANAGEMENT, LLC | $6.2M | 801,890 | 0.00% | 31q | +128.7%+$3.5M |
| Silverberg Bernstein Capital Management LLC | $6.1M | 783,306 | 2.32% | 11q | HELD |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $5.2M incl. $4.6M options CALL+PUT | 74,142 | 0.00% | 13q | -84.0%-$27.1M |
| WELLS FARGO & COMPANY/MN | $3.6M | 469,032 | 0.00% | 2q | +6.6%+$224.4K |
| STATE STREET CORP | $3.1M | 406,972 | 0.00% | 31q | +193.1%+$2.1M |
| Qube Research & Technologies Ltd | $2.7M | 351,384 | 0.00% | 2q | +1918.4%+$2.6M |
| MILLENNIUM MANAGEMENT LLC | $2.6M | 339,611 | 0.00% | 3q | -21.0%-$697.3K |
| Connor, Clark & Lunn Investment Management Ltd. | $2.4M | 308,520 | 0.00% | 5q | +165.2%+$1.5M |
| NORTHERN TRUST CORP | $1.8M | 238,481 | 0.00% | 31q | +290.6%+$1.4M |
| T. Rowe Price Investment Management, Inc. | $1.7M | 225,767 | 0.00% | new | NEW |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $1.7M | 217,708 | 0.00% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $1.7M | 214,899 | 0.00% | 2q | +15.9%+$228.5K |
| GSA CAPITAL PARTNERS LLP | $1.4M | 178,168 | 0.09% | 4q | +150.1%+$826.5K |
| CITADEL ADVISORS LLC | $1.3M incl. $905.2K options CALL+PUT | 54,745 | 0.00% | 8q | -71.4%-$3.3M |
| Potomac Capital Management, Inc. | $1.3M | 168,110 | 0.89% | 2q | -51.7%-$1.4M |
| UBS Group AG | $1.3M | 162,595 | 0.00% | 15q | -46.8%-$1.1M |
| RENAISSANCE TECHNOLOGIES LLC | $1.1M | 142,901 | 0.00% | 31q | +81.6%+$496.3K |
| IMC-Chicago, LLC | $1.1M incl. $875.8K options CALL+PUT | 29,572 | 0.00% | 3q | -53.5%-$1.3M |
| JANE STREET GROUP, LLC | $1.0M incl. $162.3K options CALL | 113,735 | 0.00% | 5q | -66.9%-$2.1M |
| Trexquant Investment LP | $962.4K | 124,497 | 0.01% | new | NEW |
| XTX Topco Ltd | $847.7K | 109,668 | 0.01% | 2q | +839.3%+$757.5K |
| PEAK6 LLC | $779.2K CALL | options only | 0.00% | new | OPTIONS |
| OSAIC HOLDINGS, INC. | $776.8K | 100,495 | 0.00% | 13q | -0.8%-$6.2K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $735.9K | 95,202 | 0.00% | 2q | +428.8%+$596.7K |
| MORGAN STANLEY | $698.2K | 90,320 | 0.00% | 13q | +5.2%+$34.3K |
| COMMONWEALTH EQUITY SERVICES, LLC | $641.9K | 83,034 | 0.00% | 31q | -10.3%-$73.4K |
| Bank of New York Mellon Corp | $537.9K | 69,584 | 0.00% | new | NEW |
| GROUP ONE TRADING LLC | $528.1K incl. $467.7K options CALL+PUT | 7,818 | 0.00% | 11q | HELD |
| BANK OF AMERICA CORP /DE/ | $448.5K | 58,016 | 0.00% | 12q | -40.6%-$306.6K |
| Squarepoint Ops LLC | $430.2K | 55,659 | 0.00% | 5q | -58.9%-$615.6K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $421.3K | 54,500 | 0.01% | 31q | HELD |
| DIMENSIONAL FUND ADVISORS LP | $393.0K | 50,847 | 0.00% | 31q | HELD |
| GOLDMAN SACHS GROUP INC | $370.2K | 47,885 | 0.00% | 5q | -69.7%-$851.5K |
| HRT FINANCIAL LP | $355.0K incl. $355.0K options OPT | 46,000 | 0.00% | new | NEW |
| Nuveen, LLC | $324.6K | 41,992 | 0.00% | new | NEW |
| RHUMBLINE ADVISERS | $270.9K | 35,052 | 0.00% | new | NEW |
| CANADA PENSION PLAN INVESTMENT BOARD | $257.4K | 33,300 | 0.00% | 3q | HELD |
| JB CAPITAL PARTNERS LP | $255.1K | 33,000 | 0.04% | 22q | HELD |
| DEUTSCHE BANK AG\ | $243.1K | 31,450 | 0.00% | new | NEW |
| LPL Financial LLC | $241.5K | 31,246 | 0.00% | 2q | +11.8%+$25.5K |
| ESSEX INVESTMENT MANAGEMENT CO LLC | $235.1K | 30,410 | 0.03% | 6q | HELD |
| Invesco Ltd. | $214.3K | 27,728 | 0.00% | new | NEW |
| FOX RUN MANAGEMENT, L.L.C. | $198.9K | 25,731 | 0.03% | new | NEW |
| JPMORGAN CHASE & CO | $183.5K | 26,785 | 0.00% | 13q | +92262.1%+$183.3K |
| HB Wealth Management, LLC | $154.6K | 20,000 | 0.00% | new | NEW |
| AMERICAN CENTURY COMPANIES INC | $153.5K | 19,860 | 0.00% | new | NEW |
| ALGERT GLOBAL LLC | $153.1K | 19,810 | 0.00% | new | NEW |
| MetLife Investment Management, LLC | $147.7K | 19,103 | 0.00% | new | NEW |
| CITIGROUP INC | $145.7K | 18,852 | 0.00% | 4q | +321.9%+$111.2K |
| ALLIANCEBERNSTEIN L.P. | $133.6K | 26,000 | 0.00% | new | NEW |
| Vanguard Personalized Indexing Management, LLC | $123.1K | 15,924 | 0.00% | 5q | +1.3%+$1.5K |
| STRS OHIO | $116.0K | 15,000 | 0.00% | new | NEW |
| NewEdge Advisors, LLC | $113.9K | 14,740 | 0.00% | 4q | +7.3%+$7.7K |
| NEW YORK STATE COMMON RETIREMENT FUND | $112.9K | 14,600 | 0.00% | new | NEW |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $112.7K | 14,578 | 0.00% | new | NEW |
| SIMPLEX TRADING, LLC | $105.1K CALL+PUT | options only | 0.00% | 13q | OPTIONS |
| BARCLAYS PLC | $97.7K | 12,636 | 0.00% | 3q | -49.9%-$97.1K |
| Susquehanna Portfolio Strategies, LLC | $97.4K | 12,600 | 0.00% | 4q | HELD |
| ProShare Advisors LLC | $93.2K | 12,058 | 0.00% | new | NEW |
| Allworth Financial LP | $85.8K | 11,098 | 0.00% | 7q | -4.3%-$3.9K |
| Vanguard Global Advisers, LLC | $78.4K | 10,136 | 0.00% | 2q | -27.8%-$30.2K |
| Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors | $77.3K | 10,000 | 0.01% | new | NEW |
| Police & Firemen's Retirement System of New Jersey | $72.2K | 9,337 | 0.00% | new | NEW |
| Pilgrim Partners Asia Pte Ltd | $42.5K | 5,500 | 0.02% | new | NEW |
| BNP PARIBAS FINANCIAL MARKETS | $40.4K | 5,230 | 0.00% | new | NEW |
| Legal & General Group Plc | $23.7K | 3,067 | 0.00% | new | NEW |
| State of Wyoming | $22.9K | 2,959 | 0.00% | new | NEW |
| JONES FINANCIAL COMPANIES LLLP | $22.6K | 3,297 | 0.00% | 6q | -19.6%-$5.5K |
| Ameritas Investment Partners, Inc. | $22.2K | 2,873 | 0.00% | new | NEW |
| ROYAL BANK OF CANADA | $22.0K | 2,868 | 0.00% | 4q | +36.2%+$5.8K |
| Russell Investments Group, Ltd. | $19.6K | 2,531 | 0.00% | new | NEW |
| Tower Research Capital LLC (TRC) | $14.4K | 1,865 | 0.00% | 3q | +46.9%+$4.6K |
| Elequin Capital, LP | $11.5K | 1,494 | 0.00% | new | NEW |
| SBI Securities Co., Ltd. | $9.3K | 1,204 | 0.00% | 5q | +3154.1%+$9.0K |
| Wilmington Savings Fund Society, FSB | $7.7K | 1,000 | 0.00% | new | NEW |
| City State Bank | $5.4K | 700 | 0.00% | new | NEW |
| Steward Partners Investment Advisory, LLC | $3.9K | 500 | 0.00% | 5q | HELD |
| CoreCap Advisors, LLC | $3.9K | 500 | 0.00% | 3q | HELD |
| FMR LLC | $3.5K | 454 | 0.00% | 3q | +269.1%+$2.6K |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $3.4K | 436 | 0.00% | new | NEW |
| SUMMIT SECURITIES GROUP LLC | $1.6K | 210 | 0.00% | new | NEW |
| Sterling Capital Management LLC | $1.3K | 167 | 0.00% | new | NEW |
| SIMS INVESTMENT MANAGEMENT, LLC | $773 | 100 | 0.00% | new | NEW |
| Rialto Wealth Management, LLC | $650 | 84 | 0.00% | new | NEW |
| EverSource Wealth Advisors, LLC | $595 | 77 | 0.00% | 2q | HELD |
| HUNTINGTON NATIONAL BANK | $8 | 1 | 0.00% | 3q | HELD |
| Avion Wealth | $0 | 67 | 0.00% | new | NEW |
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 |
|---|---|---|---|
| 2026-08-21 | 2026-08-18 | Material agreement entered | 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 |
|---|---|---|---|---|---|
| 2026-05-14 | Schirle Douglas | CFO | Sold | 40,000 | $452.9K |
| 2026-06-01 | CHUANG PATRICK T | Senior VP, Memory Design | Sold | 40,000 | $452.6K |
| 2026-06-02 | CHUANG PATRICK T | Senior VP, Memory Design | Sold | 40,000 | $439.1K |
| 2026-05-22 | Wu Bor-Tay | VP, Taiwan Operations | Sold | 40,000 | $437.4K ×2 |
| 2026-05-12 | CHUANG PATRICK T | Senior VP, Memory Design | Sold | 40,000 | $427.1K |
| 2026-05-26 | Wu Ping Tak | VP, U.S. Operations | Sold | 30,000 | $330.4K |
| 2026-05-21 | Lasserre Didier | VP, Sales | Sold | 30,000 | $279.2K |
| 2026-05-13 | Akerib Avidan | VP, Associative Computing | Sold | 19,653 | $225.3K |
| 2026-06-01 | Wu Bor-Tay | VP, Taiwan Operations | Sold | 20,000 | $218.7K |
| 2026-05-12 | Wu Ping Tak | VP, U.S. Operations | Sold | 11,763 | $127.0K |
Ten percent owners and entities
Usually an institution that crossed a reporting threshold, or a company taking a strategic stake, rather than an individual with a view.
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-11 | Shu Lee-Lean | Pres., CEO and Chairman | Sold | 143,062 | $1.6M ×3 |
| 2026-05-13 | Shu Lee-Lean | Pres., CEO and Chairman | Sold | 10,313 | $129.0K |
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 | 16 | $4.6M | 850,292 | 6 | 2 | 3 | 0.0% |
| Q2 2026 | 92 | $114.4M | 13,790,776 | 39 | 26 | 16 | 7.2% |
| Q1 2026 | 71 | $54.7M | 9,863,793 | 17 | 21 | 19 | 7.4% |
| Q4 2025 | 64 | $57.8M | 8,395,371 | 26 | 25 | 10 | 9.8% |
| Q3 2025 | 53 | $21.5M | 5,487,964 | 12 | 20 | 10 | 5.9% |
| Q2 2025 | 51 | $14.0M | 4,145,828 | 21 | 12 | 6 | 0.4% |
| Q1 2025 | 36 | $6.5M | 3,087,905 | 5 | 10 | 7 | 3.2% |
| Q4 2024 | 37 | $8.5M | 2,744,062 | 5 | 9 | 10 | 1.8% |
| Q3 2024 | 31 | $8.3M | 2,626,495 | 5 | 5 | 9 | 3.0% |
| Q2 2024 | 32 | $7.2M | 2,680,743 | 3 | 9 | 10 | 1.3% |
| Q1 2024 | 44 | $10.5M | 3,011,442 | 16 | 10 | 10 | 2.9% |
| Q4 2023 | 37 | $11.3M | 4,244,463 | 8 | 8 | 11 | 0.9% |
| Q3 2023 | 38 | $14.1M | 5,099,010 | 8 | 3 | 12 | 1.7% |
| Q2 2023 | 41 | $33.8M | 5,934,137 | 27 | 7 | 8 | 2.8% |
| Q1 2023 | 24 | $8.7M | 5,098,329 | 1 | 7 | 4 | 0.0% |
| Q4 2022 | 24 | $8.9M | 5,149,320 | 3 | 5 | 8 | 0.0% |
| Q3 2022 | 26 | $15.3M | 5,366,185 | 1 | 4 | 8 | 0.0% |
| Q2 2022 | 30 | $18.9M | 5,453,874 | 1 | 5 | 4 | 0.2% |
| Q1 2022 | 33 | $21.2M | 5,531,229 | 4 | 6 | 8 | 0.2% |
| Q4 2021 | 36 | $26.5M | 5,706,942 | 7 | 11 | 9 | 0.4% |
| Q3 2021 | 41 | $31.5M | 5,969,275 | 2 | 6 | 15 | 0.0% |
| Q2 2021 | 55 | $37.5M | 6,665,517 | 13 | 14 | 22 | 0.0% |
| Q1 2021 | 58 | $439.5M | 65,687,938 | 10 | 14 | 19 | 0.0% |
| Q4 2020 | 52 | $59.1M | 7,956,879 | 6 | 15 | 17 | 0.0% |
| Q3 2020 | 53 | $44.3M | 7,853,348 | 5 | 13 | 20 | 0.0% |
| Q2 2020 | 53 | $56.8M | 8,012,948 | 5 | 22 | 12 | 0.0% |
| Q1 2020 | 50 | $50.5M | 7,253,395 | 4 | 15 | 16 | 0.0% |
| Q4 2019 | 49 | $51.5M | 7,262,001 | 1 | 18 | 18 | 0.0% |
| Q3 2019 | 57 | $62.4M | 7,120,982 | 7 | 26 | 10 | 0.0% |
| Q2 2019 | 53 | $63.2M | 7,371,788 | 16 | 15 | 11 | 0.0% |
| Q1 2019 | 41 | $501.6M | 64,550,383 | 11 | 10 | 8 | 0.0% |
| Q4 2018 | 32 | $329.6M | 64,129,656 | 0 | 0 | 0 | 0.0% |
