United Microelectronics Ownership | Who Owns United Microelectronics?

United Microelectronics Ownership Summary

United Microelectronics is owned by 5.29% institutional investors, and 94.71% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 0.97% of UMC shares. iShares Semiconductor ETF is the top mutual fund, with 0.43% of its assets in United Microelectronics shares.

UMC Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	United Microelectronics	5.29%	-	94.71%
Sector	Technology Stocks	42.16%	12.50%	45.34%
Idea	Semiconductor Stocks List	45.37%	7.21%	47.41%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	24.14M	0.97%	$182.99M
Morgan stanley	21.85M	0.88%	$165.63M
Vanguard group	14.25M	0.57%	$108.03M
Rafferty asset management	6.22M	0.25%	$47.15M
Blackrock	23.11M	0.19%	$202.42M
State street	4.53M	0.18%	$34.34M
Goldman sachs group	4.41M	0.18%	$33.44M
Schroder investment management group	4.15M	0.17%	$31.52B
Barclays	4.08M	0.16%	$30.90M
Ubs group	3.76M	0.15%	$28.52M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Genesis investment management, llp	1.01M	7.19%	$6.55B
Symmetry peak management	50.00K	0.77%	$438.00K
West family investments	173.25K	0.30%	$1.31M
Bayforest capital	59.67K	0.21%	$452.27K
Ridgewood investments	54.67K	0.17%	$414.38K
Dgs capital management	99.15K	0.16%	$643.47K
Moran wealth management	696.50K	0.16%	$5.28M
Rafferty asset management	6.22M	0.15%	$47.15M
Ignite planners	110.67K	0.14%	$838.87K
Ariadne wealth management, lp	32.63K	0.11%	$223.16K

Top Buyers

Holder	Shares	% Assets	Change
Two sigma investments, lp	3.53M	0.04%	3.15M
Marshall wace, llp	2.80M	0.02%	2.80M
Renaissance	1.97M	0.02%	1.97M
Two sigma advisers, lp	1.61M	0.02%	1.60M
Blackrock	23.11M	0.00%	980.05K

Top Sellers

Holder	Shares	% Assets	Change
Ubs group	3.76M	0.00%	-13.13M
Fisher asset management	-	-	-7.30M
Millennium management	7.89M	0.03%	-6.44M
Genesis investment management, llp	1.01M	7.19%	-3.34M
Maple rock capital partners	-	-	-3.14M

New Positions

Holder	Shares	% Assets	Change	Value
Renaissance	1.97M	0.02%	1.97M	$12.77M
D. e. shaw	617.75K	0.00%	617.75K	$4.01M
Nomura	334.00K	0.00%	334.00K	$2.17M
Summit global investments	144.66K	0.06%	144.66K	$1.10M
North of south capital llp	125.00K	0.09%	125.00K	$947.50K

Sold Out

Holder	Change
Steward partners investment advisory	-9.00
Lynx investment advisory	-26.00
High note wealth	-28.00
Carolina wealth advisors	-30.00
Yhb investment advisors	-32.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	239	0.84%	132,116,209	9.28%	5	564.21%	115	-14.18%	85	30.77%
Jun 30, 2025	243	-2.02%	150,941,101	-2.40%	1	78.79%	134	0.75%	69	4.55%
Mar 31, 2025	4	-98.46%	508,584	-99.68%	-	0.25%	1	-99.11%	-	-100.00%
Dec 31, 2024	240	-13.67%	155,223,056	-3.14%	1	76.34%	100	-35.06%	98	38.03%
Sep 30, 2024	273	12.35%	160,152,040	21.57%	1	115.66%	152	26.67%	70	1.45%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Semiconductor ETF	10.78M	0.43%	-
Vanguard Emerging Mkts Stock Idx Inv	6.64M	0.26%	-
Direxion Daily Semicondct Bull 3X ETF	6.61M	0.26%	-49.63K
Vanguard Global Minimum Volatility Admr	4.28M	0.17%	-638.12K
SPDR® Portfolio Emerging Markets ETF	3.85M	0.15%	-
Vanguard FTSE All-Wld ex-US ETF	2.24M	0.09%	-
Debeka-Aktien-Asien-ESG C	1.40M	0.06%	-
Freedom 100 Emerging Markets ETF	1.28M	0.05%	-
Vanguard Total Intl Stock Index Inv	980.52K	0.04%	-
Sun Life Acadian International Eq I	943.02K	0.04%	-345.39K

UMC Ownership FAQ

Who owns the most shares of United Microelectronics?

United Microelectronics’s largest shareholders are Blackrock funding, inc. /de (24.14M shares, 0.97%), Morgan stanley (21.85M shares, 0.88%), and Vanguard group (14.25M shares, 0.57%). Together, they hold 2.41% of United Microelectronics’s total shares outstanding.

Does Blackrock own United Microelectronics?

Yes, BlackRock owns 0.19% of United Microelectronics, totaling 23.11M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 202.42M$. In the last quarter, BlackRock increased its holdings by 980.06K shares, a 4.43% change.

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

Genesis investment management, llp is United Microelectronics’s biggest shareholder by percentage of total assets invested, with 7.19% of its assets in 1.01M United Microelectronics shares, valued at 6.55B$.

Who is the top mutual fund holder of United Microelectronics shares?

iShares Semiconductor ETF is the top mutual fund holder of United Microelectronics shares, with 0.43% of its total shares outstanding invested in 10.78M United Microelectronics shares.

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