GSI Ownership | Who Owns GSI?

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GSI Ownership Summary

GSI is owned by 10.05% institutional investors, 12.33% insiders, and 77.62% retail investors. Vanguard group is the largest institutional shareholder, holding 4.21% of GSIT shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.54% of its assets in GSI shares.

GSIT Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	GSI	10.05%	12.33%	77.62%
Sector	Technology Stocks	36.93%	14.89%	48.18%
Idea	Semiconductor Stocks List	48.16%	6.95%	44.89%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	1.45M	4.21%	$9.02M
Silverberg bernstein capital management	785.71K	2.28%	$4.04M
Price t rowe associates inc /md/	742.67K	2.15%	$3.82M
Marshall wace, llp	639.03K	1.85%	$3.28M
Blackrock funding, inc. /de	544.00K	1.58%	$2.80M
Two sigma investments, lp	530.20K	1.54%	$2.73M
Susquehanna group, llp	464.03K	1.34%	$2.39M
Wells fargo & company/mn	440.00K	1.27%	$2.26M
Millennium management	429.82K	1.25%	$2.21M
Geode capital management	350.69K	1.02%	$1.80M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Silverberg bernstein capital management	785.71K	2.22%	$4.04M
Potomac capital management	348.40K	1.56%	$1.79M
Scientech research	24.52K	0.11%	$126.04K
683 capital management	118.83K	0.03%	$610.81K
Jb capital partners lp	33.00K	0.03%	$169.62K
Essex investment management	30.45K	0.02%	$156.53K
Gsa capital partners llp	71.23K	0.02%	$366.00K
Two sigma securities	28.68K	0.02%	$147.41K
Diametric capital, lp	11.00K	0.01%	$56.52K
Mangrove partners	32.63K	0.01%	$167.70K

Top Buyers

Holder	Shares	% Assets	Change
Price t rowe associates inc /md/	742.67K	0.00%	742.67K
Vanguard group	1.45M	0.00%	515.52K
Wells fargo & company/mn	440.00K	0.00%	440.00K
Millennium management	429.82K	0.00%	383.98K
Potomac capital management	348.40K	1.56%	348.40K

Top Sellers

Holder	Shares	% Assets	Change
Concentric capital strategies, lp	-	-	-340.66K
Susquehanna group, llp	464.03K	0.00%	-246.92K
Discovery capital management, llc / ct	-	-	-183.60K
Arrowstreet capital, limited partnership	41.44K	0.00%	-144.09K
Marshall wace, llp	639.03K	0.00%	-88.05K

New Positions

Holder	Shares	% Assets	Change	Value
Price t rowe associates inc /md/	742.67K	0.00%	742.67K	$3.82M
Potomac capital management	348.40K	1.56%	348.40K	$1.79M
Vanguard fiduciary trust	185.34K	0.00%	185.34K	$952.66K
Sih partners, lllp	77.54K	0.01%	77.54K	$398.55K
Hudson bay capital management lp	54.46K	0.00%	54.46K	$279.91K

Sold Out

Holder	Change
Southstate	-28.00
Innealta capital	-32.00
Farther finance advisors	-200.00
Bnp paribas arbitrage, snc	-204.00
Miller wealth advisors	-300.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	17	-75.00%	3,467,777	-58.69%	10	1.70%	9	-80.85%	4	-63.64%
Dec 31, 2025	36	-36.84%	5,688,843	3.74%	16	3.99%	27	-22.86%	5	-16.67%
Sep 30, 2025	30	-36.17%	4,090,200	5.66%	15	7.36%	19	-38.71%	3	-50.00%
Jun 30, 2025	50	28.21%	4,139,716	34.02%	15	10.50%	33	94.12%	7	-
Mar 31, 2025	39	-4.88%	3,125,233	13.67%	12	10.56%	17	-5.56%	7	-30.00%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	919.43K	2.54%	-
Vanguard US Total Market Shares ETF	574.55K	2.24%	-
T. Rowe Price New Horizons	459.84K	1.27%	289.99K
US Small-Cap Growth II Equity Comp	459.84K	1.27%	459.84K
Vanguard Institutional Extnd Mkt Idx Tr	330.63K	0.91%	-
T. Rowe Price New Horizons Tr-A	211.87K	0.59%	211.87K
IMC US Ultra Micro Cap	143.79K	0.49%	143.79K
Fidelity Extended Market Index	160.50K	0.44%	6.22K
VistaShares Artfcl Intlgc Supercycle ETF	152.66K	0.42%	2.54K
Blackrock Extended Mkt Fund CF	88.39K	0.24%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 26, 2026	Wu Ping Tak	VP, U.S. Operations	Sell	$330.40K
May 22, 2026	Wu Bor-Tay	VP, Taiwan Operations	Buy	$218.68K
May 22, 2026	Wu Bor-Tay	VP, Taiwan Operations	Sell	$218.68K
May 21, 2026	Lasserre Didier	VP, Sales	Sell	$279.18K
May 14, 2026	Schirle Douglas	CFO	Sell	$452.93K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	13
2026 Q1	-	6
2025 Q4	1	4
2025 Q3	-	3
2025 Q2	-	-

GSIT Ownership FAQ

Who owns the most shares of GSI?

GSI’s largest shareholders are Vanguard group (1.45M shares, 4.21%), Silverberg bernstein capital management (785.71K shares, 2.28%), and Price t rowe associates inc /md/ (742.67K shares, 2.15%). Together, they hold 8.64% of GSI’s total shares outstanding.

Does Blackrock own GSI?

BlackRock is not among the top 10 institutional shareholders of GSI.

Who is GSI’s biggest shareholder by percentage of total assets invested?

Silverberg bernstein capital management is GSI’s biggest shareholder by percentage of total assets invested, with 2.22% of its assets in 785.71K GSI shares, valued at 4.04M$.

Who is the top mutual fund holder of GSI shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of GSI shares, with 2.54% of its total shares outstanding invested in 919.43K GSI shares.

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