GSI Technology, Inc. (GSIT) Ownership
GSIT ownership summary
as of October 18, 2026- Institutions
- 38.8% of shares outstanding
- Insiders
- 8.07% of shares outstanding
- Shares outstanding
- 38.4M
- Float
- 32.6M shares available to trade
- Short interest
- 13.09% 4.5M shares short
- Days to cover
- 9.04 short interest up 8.2% vs prior month
- Institutions 38.85%
- Insiders 8.07%
- Other investors 53.08%
GSIT top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 6.24% | 2.4M | $9.6M | +1.9M (+341.1%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 3.51% | 1.4M | $5.4M | +71,935 (+5.6%) | June 30, 2026 |
| 3 | T. Rowe Price Associates, Inc. | 2.96% | 1.1M | $4.6M | +394,023 (+53.1%) | June 30, 2026 |
| 4 | Marshall Wace Asset Management Ltd | 2.92% | 1.1M | $4.5M | +483,676 (+75.7%) | June 30, 2026 |
| 5 | Two Sigma Investments LLC | 2.28% | 876K | $3.5M | +345,690 (+65.2%) | June 30, 2026 |
| 6 | Geode Capital Management, LLC | 2.09% | 802K | $3.2M | +451,196 (+128.7%) | June 30, 2026 |
| 7 | Silverberg Bernstein Capital Management LLC | 1.96% | 754K | $3.0M | −29,502 (−3.8%) | September 30, 2026 |
| 8 | Wells Fargo & Co | 1.22% | 469K | $1.9M | +29,032 (+6.6%) | June 30, 2026 |
| 9 | State Street Corp | 1.06% | 407K | $1.6M | +268,130 (+193.1%) | June 30, 2026 |
| 10 | Qube Research & Technologies | 0.91% | 351K | $1.4M | +333,975 (+1,918.4%) | June 30, 2026 |
| 11 | Millennium Management LLC | 0.88% | 340K | $1.4M | −90,208 (−21.0%) | June 30, 2026 |
| 12 | Connor Clark & Lunn Inv Mgmt Ltd | 0.80% | 309K | $1.2M | +192,167 (+165.2%) | June 30, 2026 |
| 13 | Northern Trust Corp | 0.62% | 238K | $958,694 | +177,433 (+290.6%) | June 30, 2026 |
| 14 | T. Rowe Price Investment Management,Inc. | 0.59% | 226K | $907,583 | +225,767 (0.0%) | June 30, 2026 |
| 15 | Vanguard Portfolio Management, LLC | 0.57% | 218K | $875,186 | +217,708 (0.0%) | June 30, 2026 |
| 16 | Vanguard Fiduciary Trust Co | 0.56% | 215K | $863,894 | +29,557 (+15.9%) | June 30, 2026 |
| 17 | GSA Capital Partners LLP | 0.46% | 178K | $716,235 | +106,939 (+150.1%) | June 30, 2026 |
| 18 | Potomac Capital Management, Inc. | 0.44% | 168K | $675,802 | −180,290 (−51.7%) | June 30, 2026 |
| 19 | UBS Group AG | 0.42% | 163K | $653,632 | −143,154 (−46.8%) | June 30, 2026 |
| 20 | Renaissance Technologies Corp | 0.37% | 143K | $574,462 | +64,200 (+81.6%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 16 holders added 5.2M shares and 4 cut 443K.
GSIT top mutual fund and ETF holders
18 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Russell 2000 ETF | 2.57% | 989K | $4.0M | −11,392 (−1.1%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 2.55% | 980K | $3.9M | — | August 31, 2026 |
| 3 | Fidelity Small Cap Index | 0.90% | 346K | $1.4M | +1,616 (+0.5%) | July 31, 2026 |
| 4 | iShares Russell 2000 Growth ETF | 0.78% | 299K | $1.2M | −378 (−0.1%) | September 30, 2026 |
| 5 | T. Rowe Price New Horizons | 0.68% | 261K | $1.0M | −235,900 (−47.5%) | September 30, 2026 |
| 6 | Vanguard Russell 2000 ETF | 0.54% | 206K | $827,617 | +23,219 (+12.7%) | September 30, 2026 |
| 7 | Fidelity Extended Market Index | 0.39% | 149K | $600,098 | −8,277 (−5.3%) | August 31, 2026 |
| 8 | iShares Micro-Cap ETF | 0.29% | 111K | $446,791 | −767 (−0.7%) | September 30, 2026 |
| 9 | Schwab Small Cap Index | 0.20% | 77K | $310,352 | — | August 31, 2026 |
| 10 | iShares Russell 2000 Value ETF | 0.16% | 63K | $252,681 | +96 (+0.2%) | September 30, 2026 |
| 11 | Stt Strt SPDR® Russell2000 US SmCapETF | 0.16% | 62K | $248,002 | −4,308 (−6.5%) | September 30, 2026 |
| 12 | iShares Russell 2000 Small-Cap Idx Instl | 0.15% | 59K | $237,908 | — | August 31, 2026 |
| 13 | Fidelity Total Market Index | 0.14% | 55K | $219,597 | +1,400 (+2.6%) | August 31, 2026 |
| 14 | Fidelity Series Total Market Index | 0.13% | 48K | $194,017 | +3,220 (+7.1%) | August 31, 2026 |
| 15 | EA Bridgeway Ultra-Small Company Mkt ETF | 0.12% | 47K | $188,940 | — | September 30, 2026 |
| 16 | Nuveen Small Cap Blend Idx R6 | 0.11% | 42K | $168,808 | — | August 31, 2026 |
| 17 | EQ/2000 Managed Volatility IB | 0.09% | 36K | $145,005 | — | August 31, 2026 |
| 18 | Vanguard Russell 2000 Growth ETF | 0.09% | 34K | $137,842 | +3,538 (+11.5%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
GSIT insider transactions
latest 8| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-17 | Lee-Lean Shu | Sell | $10.01 | 36,517 | $365,535 |
| 2026-03-16 | Lee-Lean Shu | Sell | $10.02 | 30,734 | $307,955 |
| 2026-03-10 | Bor-Tay Wu | Sell | $8.66 | 40,000 | $346,400 |
| 2026-03-02 | Patrick T Chuang | Sell | $8.37 | 20,000 | $167,400 |
| 2025-11-06 | Patrick T Chuang | Sell | $8.66 | 40,000 | $346,400 |
| 2025-11-05 | Avidan Akerib | Sell | $8.54 | 54,732 | $467,411 |
| 2025-11-04 | Avidan Akerib | Sell | $9.05 | 135,286 | $1.2M |
| 2025-08-05 | Avidan Akerib | Sell | $3.89 | 10,000 | $38,900 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
GSIT shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns GSIT
Institutional investors own 38.8% of GSI Technology's shares and insiders 8.07%. The largest holder is BlackRock Inc with 6.24% of the shares (2.4M), as of June 30, 2026. Among the top 20 institutions, 16 added shares and 4 reduced their stake in the latest filings. Short interest is 13.09% of the float, or 9.04 days of average trading volume. The share count rose 41.9% since 2014.
Related: GSIT analyst forecast, GSIT key metrics. See the GSIT stock overview for the latest quote and news.
GSIT ownership FAQ
Who owns the most GSI Technology stock?
The largest shareholders of GSI Technology are BlackRock Inc (6.24%), Vanguard Capital Management, LLC (3.51%), T. Rowe Price Associates, Inc. (2.96%), Marshall Wace Asset Management Ltd (2.92%), Two Sigma Investments LLC (2.28%).
What percentage of GSI Technology is owned by institutions?
Institutions hold 38.8% of GSI Technology's shares outstanding; insiders hold 8.07%.
Which funds own GSI Technology?
The largest fund holders of GSI Technology are iShares Russell 2000 ETF (2.57%), Vanguard MStar Total Stk Mkt Idx Invest (2.55%), Fidelity Small Cap Index (0.90%), iShares Russell 2000 Growth ETF (0.78%), T. Rowe Price New Horizons (0.68%).
What is GSI Technology's short interest?
4.5M shares of GSI Technology were sold short, 13.09% of the float; at the average daily volume it would take 9.04 days to cover.
Are insiders buying or selling GSI Technology?
Of the latest 8 reported insider transactions in GSI Technology (since August 5, 2025), 0 were purchases and 8 were sales.
How many shares of GSI Technology are outstanding?
GSI Technology has 38.4M shares outstanding, of which 32.6M are in the public float.