GSIT · Gsi Technology Inc · Shareholders & Ownership

$4.40 +0.45 (+11.39%) At close · Oct 27 Q1 2027 earnings call transcript

Russell 2000 member Rebalance outlook locked

Market Cap

$169.10M

38.43M

Volume · Oct 27 378.89K Avg daily vol (3M) 510.92K

Every disclosed holder of GSIT in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns GSIT

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	93	13,719,358	35.70%	Yes
Insiders (Forms 3, 4, 5)	12	2,322,995	6.04%	Yes
13D/G-only blocks	2	2,654,510	6.91%	Yes
Remaining	—	19,735,727	51.35%	Rest
Registered funds (N-PORT, not summed)	84	4,821,010	12.54%	No

Shares outstanding: 38,432,590, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of GSIT

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	Lee-Lean Shu 13G CIK 1394413 · Unknown · Jun 30, 2026 Rule 13d-1(d), exempt investor, not summed	3,543,989	9.22%	-110,313	Jun 30, 2026	Rule 13d-1(d), exempt investor, not summed
1.1	Shu Lee-Lean Insider CIK 1394413 · May 13, 2026 Director, Pres., CEO and Chairman, issuer-wide	530,939	1.38%	-1,982,417	May 13, 2026	Director, Pres., CEO and Chairman, issuer-wide
2	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	2,399,846	6.24%	+1,855,848	Jun 30, 2026	carried, not yet filed for the newest quarter
2.1	BlackRock, Inc. 13G CIK 2012383 · Holding company · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	2,374,372	6.18%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
2.2	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	896,352	2.33%	—	Jun 30, 2026	iShares Trust, not summed
2.3	iShares Russell 2000 Growth ETF Fund S000004343 · Registered fund · Jun 30, 2026 iShares Trust, not summed	265,813	0.69%	—	Jun 30, 2026	iShares Trust, not summed
2.4	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	104,584	0.27%	+28,491	Jun 30, 2026	iShares Trust, not summed
2.5	iShares Russell 2000 Value ETF Fund S000004342 · Registered fund · Jun 30, 2026 iShares Trust, not summed	62,568	0.16%	—	Jun 30, 2026	iShares Trust, not summed
3	Galloway Capital Partners, LLC 13D CIK 1991451 · Unknown · Feb 18, 2026	1,818,950	4.73%	—	Feb 18, 2026
4	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,350,367	3.51%	+71,935	Jun 30, 2026	carried, not yet filed for the newest quarter
5	PRICE T ROWE ASSOCIATES INC /MD/ 13F CIK 80255 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,136,693	2.96%	+394,023	Jun 30, 2026	carried, not yet filed for the newest quarter
5.1	T. Rowe Price New Horizons Fund, Inc. Fund S000002106 · Registered fund · Jun 30, 2026 T. ROWE PRICE NEW HORIZONS FUND, INC., not summed	715,731	1.86%	+255,894	Jun 30, 2026	T. ROWE PRICE NEW HORIZONS FUND, INC., not summed
5.2	T. Rowe Price Small-Cap Stock Fund, Inc. Fund S000002120 · Registered fund · Jun 30, 2026 T. ROWE PRICE SMALL-CAP STOCK FUND, INC., not summed	111,858	0.29%	—	Jun 30, 2026	T. ROWE PRICE SMALL-CAP STOCK FUND, INC., not summed
5.3	T. Rowe Price Institutional Small-Cap Stock Fund Fund S000002094 · Registered fund · Jun 30, 2026 T. Rowe Price Equity Funds, Inc., not summed	36,799	0.10%	—	Jun 30, 2026	T. Rowe Price Equity Funds, Inc., not summed
5.4	T. Rowe Price Small-Cap Index Fund Fund S000051327 · Registered fund · Jun 30, 2026 T. ROWE PRICE INDEX TRUST, INC., not summed	4,773	0.01%	—	Jun 30, 2026	T. ROWE PRICE INDEX TRUST, INC., not summed
5.5	T. Rowe Price Moderate Allocation Portfolio Fund S000002079 · Registered fund · Jun 30, 2026 T. ROWE PRICE EQUITY SERIES, INC., not summed	148	0.00%	—	Jun 30, 2026	T. ROWE PRICE EQUITY SERIES, INC., not summed
6	MARSHALL WACE, LLP 13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,122,703	2.92%	+483,676	Jun 30, 2026	carried, not yet filed for the newest quarter
7	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	979,771	2.55%	+60,340	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
8	Wu Bor-Tay Insider CIK 1394670 · Sep 9, 2026 VP, Taiwan Operations, issuer-wide	912,500	2.37%	0	Sep 9, 2026	VP, Taiwan Operations, issuer-wide
9	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	875,894	2.28%	+345,690	Jun 30, 2026	carried, not yet filed for the newest quarter
10	Orin Hirschman 13G CIK 1131362 · Investment adviser · Dec 31, 2023 Rule 13d-1(c), passive investor	835,560	2.17%	—	Dec 31, 2023	Rule 13d-1(c), passive investor
11	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	801,890	2.09%	+451,196	Jun 30, 2026	carried, not yet filed for the newest quarter
12	Silverberg Bernstein Capital Management LLC 13F CIK 2007880 · Registered investment adviser · Sep 30, 2026	753,804	1.96%	-29,502	Sep 30, 2026
13	WELLS FARGO & COMPANY/MN 13F CIK 72971 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	469,032	1.22%	+29,032	Jun 30, 2026	carried, not yet filed for the newest quarter
14	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	406,972	1.06%	+268,130	Jun 30, 2026	carried, not yet filed for the newest quarter
14.1	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	5,200	0.01%	—	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
14.2	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	799	0.00%	—	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
15	Qube Research & Technologies Ltd 13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	351,384	0.91%	+333,975	Jun 30, 2026	carried, not yet filed for the newest quarter
16	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	339,611	0.88%	-90,208	Jun 30, 2026	carried, not yet filed for the newest quarter
17	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	335,883	0.87%	+5,258	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
18	Lasserre Didier Insider CIK 1394410 · May 21, 2026 VP, Sales, issuer-wide	310,907	0.81%	+15,619	May 21, 2026	VP, Sales, issuer-wide
19	Connor, Clark & Lunn Investment Management Ltd. 13F CIK 1596800 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	308,520	0.80%	+192,167	Jun 30, 2026	carried, not yet filed for the newest quarter
20	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	238,481	0.62%	+177,433	Jun 30, 2026	carried, not yet filed for the newest quarter
20.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	16,316	0.04%	—	Jun 30, 2026	Northern Funds, not summed
21	T. Rowe Price Investment Management, Inc. 13F CIK 1897612 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	225,767	0.59%	+225,767	Jun 30, 2026	carried, not yet filed for the newest quarter
22	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	217,708	0.57%	+217,708	Jun 30, 2026	carried, not yet filed for the newest quarter
23	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	214,899	0.56%	+29,557	Jun 30, 2026	carried, not yet filed for the newest quarter
24	GSA CAPITAL PARTNERS LLP 13F CIK 1362033 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	178,168	0.46%	+106,939	Jun 30, 2026	carried, not yet filed for the newest quarter
25	Potomac Capital Management, Inc. 13F CIK 1418746 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	168,110	0.44%	-180,290	Jun 30, 2026	carried, not yet filed for the newest quarter
26	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	162,595	0.42%	-143,154	Jun 30, 2026	carried, not yet filed for the newest quarter
27	Wu Ping Tak Insider CIK 1394447 · May 26, 2026 VP, U.S. Operations, issuer-wide	148,441	0.39%	-10,969	May 26, 2026	VP, U.S. Operations, issuer-wide
28	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	142,901	0.37%	+64,200	Jun 30, 2026	carried, not yet filed for the newest quarter
29	Trexquant Investment LP 13F CIK 1633445 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	124,497	0.32%	+124,497	Jun 30, 2026	carried, not yet filed for the newest quarter
30	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	113,735	0.30%	-229,787	Jun 30, 2026	carried, not yet filed for the newest quarter
31	Liao I-Chi Insider CIK 2153832 · Aug 31, 2026 VP, Taiwan Operations, issuer-wide	109,762	0.29%	—	Aug 31, 2026	VP, Taiwan Operations, issuer-wide
32	XTX Topco Ltd 13F CIK 1828301 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	109,668	0.29%	+97,993	Jun 30, 2026	carried, not yet filed for the newest quarter
33	OSAIC HOLDINGS, INC. 13F CIK 1677044 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	100,495	0.26%	-796	Jun 30, 2026	carried, not yet filed for the newest quarter
34	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	95,202	0.25%	+77,197	Jun 30, 2026	carried, not yet filed for the newest quarter
34.1	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	77,202	0.20%	—	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
34.2	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	18,000	0.05%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
35	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	90,320	0.24%	+4,438	Jun 30, 2026	carried, not yet filed for the newest quarter
36	COMMONWEALTH EQUITY SERVICES, LLC 13F CIK 312272 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	83,034	0.22%	-9,500	Jun 30, 2026	carried, not yet filed for the newest quarter
37	Hsieh Hong-Po Insider CIK 1444540 · Aug 3, 2026 Director, issuer-wide	76,560	0.20%	—	Aug 3, 2026	Director, issuer-wide
38	SUSQUEHANNA INTERNATIONAL GROUP, LLP 13F CIK 1446194 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	74,142	0.19%	-389,888	Jun 30, 2026	carried, not yet filed for the newest quarter
39	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	69,584	0.18%	+69,584	Jun 30, 2026	carried, not yet filed for the newest quarter
40	Schirle Douglas Insider CIK 1394412 · May 14, 2026 CFO, issuer-wide	69,046	0.18%	+8,421	May 14, 2026	CFO, issuer-wide
41	Cholawsky Elizabeth Insider CIK 1608771 · Jul 15, 2026 Director, issuer-wide	61,867	0.16%	+60,517	Jul 15, 2026	Director, issuer-wide
42	BANK OF AMERICA CORP /DE/ 13F CIK 70858 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	58,016	0.15%	-39,661	Jun 30, 2026	carried, not yet filed for the newest quarter
43	Lu Ruey-Lin Insider CIK 1394200 · Oct 31, 2025 Director, issuer-wide	56,500	0.15%	+4,000	Oct 31, 2025	Director, issuer-wide
44	Squarepoint Ops LLC 13F CIK 1642575 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	55,659	0.14%	-79,644	Jun 30, 2026	carried, not yet filed for the newest quarter
45	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	54,745	0.14%	-136,647	Jun 30, 2026	carried, not yet filed for the newest quarter
46	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	54,500	0.14%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
46.1	Ultra-Small Company Market Fund Fund S000004424 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	53,000	0.14%	0	Jun 30, 2026	Bridgeway Funds, Inc., not summed
47	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	50,847	0.13%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
47.1	U.S. SMALL CAP PORTFOLIO Fund S000000971 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	26,333	0.07%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
47.2	Dimensional U.S. Small Cap ETF Fund S000070906 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	16,413	0.04%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
47.3	U.S. MICRO CAP PORTFOLIO Fund S000000948 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	6,523	0.02%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
48	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	47,885	0.12%	-110,154	Jun 30, 2026	carried, not yet filed for the newest quarter
48.1	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Aug 31, 2026 GOLDMAN SACHS TRUST, not summed	10,770	0.03%	-2,158	Aug 31, 2026	GOLDMAN SACHS TRUST, not summed
49	Nuveen, LLC 13F CIK 1871926 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	41,992	0.11%	+41,992	Jun 30, 2026	carried, not yet filed for the newest quarter
49.1	Nuveen Small Cap Blend Index Fund Fund S000005367 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	41,992	0.11%	—	Jul 31, 2026	TIAA-CREF Funds, not summed
50	EQ/2000 Managed Volatility Portfolio Fund S000025800 · Registered fund · Jun 30, 2026 EQ Advisors Trust, not summed	36,071	0.09%	—	Jun 30, 2026	EQ Advisors Trust, not summed

3 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 153 holders

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Key facts CIK 1126741 CUSIP 36241U106 13F (30d) 13 filings 13 filers Visit website Investor relations