GSIT: GSI Technology, Inc. insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 0 sales totaling - in the last 180 days.
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-08-13 | 13G amendment | Lee-Lean Shu | 9.00% | SEC | |
| 2026-07-28 | New 13G stake | BlackRock, Inc. | 6.20% | SEC |
Institutional ownership (Q2 2026)
89 institutions reported holding $94.26M of GSI Technology, Inc. on Form 13F (70 the quarter before). 36 opened a new position and 17 sold out. Shares held by institutions: +39%.
| Largest holders | Shares | Value |
|---|---|---|
| BlackRock, Inc. | 2,399,846 | $18.55M |
| VANGUARD CAPITAL MANAGEMENT LLC | 1,350,367 | $10.44M |
| MARSHALL WACE, LLP | 1,122,703 | $8.68M |
| TWO SIGMA INVESTMENTS, LP | 875,894 | $6.77M |
| GEODE CAPITAL MANAGEMENT, LLC | 801,890 | $6.20M |
| Silverberg Bernstein Capital Management LLC | 783,306 | $6.05M |
| WELLS FARGO & COMPANY/MN | 469,032 | $3.63M |
| STATE STREET CORP | 406,972 | $3.15M |
| Qube Research & Technologies Ltd | 351,384 | $2.72M |
| MILLENNIUM MANAGEMENT LLC | 339,611 | $2.63M |
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