United Microelectronics Ownership | Who Owns United Microelectronics?

United Microelectronics Ownership Summary

United Microelectronics is owned by 1.21% institutional investors, and 98.79% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 0.19% 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	1.21%	-	98.79%
Sector	Technology Stocks	144.02%	12.54%	-56.56%
Idea	Semiconductor Stocks List	62.65%	7.35%	30.01%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	24.32M	0.19%	$186.03M
Blackrock	23.11M	0.19%	$202.42M
Vanguard group	15.95M	0.13%	$103.50M
Ubs group	9.58M	0.08%	$62.20M
Bank of america corp /de/	8.53M	0.07%	$74.76M
Rafferty asset management	8.40M	0.07%	$64.28M
Millennium management	7.89M	0.06%	$56.44M
Morgan stanley	7.00M	0.06%	$61.31M
Citigroup	5.83M	0.05%	$37.86M
Goldman sachs group	5.12M	0.04%	$33.22M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Genesis investment management, llp	1.01M	7.19%	$6.55B
Kadensa capital	1.56M	1.23%	$10.13M
Maple rock capital partners	3.14M	1.18%	$24.02M
Symmetry peak management	50.00K	0.77%	$438.00K
West family investments	187.70K	0.37%	$1.44M
Rafferty asset management	8.40M	0.21%	$64.28M
Y-intercept (hong kong)	970.41K	0.18%	$7.42M
Dgs capital management	99.15K	0.16%	$643.47K
Crossmark global	1.28M	0.16%	$9.80M
Ignite planners	113.17K	0.15%	$846.52K

Top Buyers

Holder	Shares	% Assets	Change
Maple rock capital partners	3.14M	1.18%	3.14M
Rafferty asset management	8.40M	0.21%	2.83M
Ubs group	9.58M	0.01%	2.30M
Renaissance	1.97M	0.02%	1.97M
Kadensa capital	1.56M	1.23%	1.56M

Top Sellers

Holder	Shares	% Assets	Change
Fisher asset management	-	-	-7.30M
Millennium management	7.89M	0.03%	-6.44M
Two sigma investments, lp	3.33M	0.05%	-3.89M
Genesis investment management, llp	1.01M	7.19%	-3.34M
Qube research	-	-	-2.68M

New Positions

Holder	Shares	% Assets	Change	Value
Maple rock capital partners	3.14M	1.18%	3.14M	$24.02M
Renaissance	1.97M	0.02%	1.97M	$12.77M
Kadensa capital	1.56M	1.23%	1.56M	$10.13M
D. e. shaw	617.75K	0.00%	617.75K	$4.01M
Nomura	334.00K	0.00%	334.00K	$2.17M

Sold Out

Holder	Change
Aquatic capital management	-5.00
Lynx investment advisory	-26.00
Carolina wealth advisors	-30.00
Yhb investment advisors	-32.00
Van hulzen asset management	-47.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
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%
Jun 30, 2024	242	-4.72%	131,732,412	0.15%	1	94.67%	120	2.56%	68	-17.07%

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 (24.32M shares, 0.19%), Blackrock (23.11M shares, 0.19%), and Vanguard group (15.95M shares, 0.13%). Together, they hold 0.51% 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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