United Microelectronics Ownership | Who Owns United Microelectronics?

United Microelectronics Ownership Summary

United Microelectronics is owned by 7.21% institutional investors, and 92.79% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 1.26% of UMC shares. iShares Semiconductor ETF is the top mutual fund, with 0.84% of its assets in United Microelectronics shares.

UMC Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	United Microelectronics	7.21%	-	92.79%
Sector	Technology Stocks	53.74%	14.92%	31.34%
Idea	Semiconductor Stocks List	73.13%	6.84%	20.03%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	31.54M	1.26%	$858.32M
Vanguard group	13.52M	0.54%	$106.30M
Ubs group	11.63M	0.47%	$316.53M
Goldman sachs group	11.11M	0.44%	$302.30M
Bank of america corp /de/	10.18M	0.41%	$277.03M
Vanguard capital management	8.60M	0.34%	$234.06M
Morgan stanley	8.29M	0.33%	$225.45M
Aqr capital management	7.72M	0.31%	$210.01M
Rafferty asset management	7.65M	0.31%	$208.25M
Acadian asset management	5.75M	0.23%	$156.53M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Matthews capital management	1.47M	13.67%	$39.88M
Genesis investment management, llp	1.01M	7.19%	$6.55B
Mizuho financial group	11.25K	2.60%	$306.14K
Aubrey capital management	100.00K	1.70%	$2.72M
Anglepoint asset management	86.27K	1.52%	$2.35M
Symmetry peak management	50.00K	0.77%	$438.00K
West family investments	92.39K	0.73%	$2.51M
Qp wealth management	18.66K	0.72%	$507.63K
E fund management	995.79K	0.61%	$27.10M
Cogentblue wealth advisors	35.43K	0.55%	$964.05K

Top Buyers

Holder	Shares	% Assets	Change
Bank of america corp /de/	10.18M	0.02%	7.58M
Goldman sachs group	11.11M	0.03%	5.23M
Blackrock funding, inc. /de	31.54M	0.01%	4.05M
Neuberger berman group	4.13M	0.07%	4.02M
Ubs group	11.63M	0.04%	3.46M

Top Sellers

Holder	Shares	% Assets	Change
Fisher asset management	-	-	-7.30M
Aqr capital management	7.72M	0.07%	-7.00M
Two sigma investments, lp	3.09M	0.06%	-6.57M
Qube research	-	-	-5.10M
Genesis investment management, llp	1.01M	7.19%	-3.34M

New Positions

Holder	Shares	% Assets	Change	Value
Renaissance	1.97M	0.02%	1.97M	$12.77M
E fund management	995.79K	0.61%	995.79K	$27.10M
Nomura	813.90K	0.03%	813.90K	$22.15M
Capstone investment advisors	364.17K	0.01%	364.17K	$3.27M
Nuveen	257.71K	0.00%	257.71K	$7.01M

Sold Out

Holder	Change
Seneschal advisors	-5.00
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 %
Jun 30, 2026	386	15.22%	180,016,904	3.19%	7	14.78%	223	1.83%	112	96.49%
Mar 31, 2026	182	-35.46%	46,905,117	-69.21%	1	5.05%	115	-35.03%	32	-42.86%
Dec 31, 2025	191	-23.29%	95,959,914	-27.44%	3	13.70%	118	-3.28%	38	-55.81%
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%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Semiconductor ETF	21.12M	0.84%	-107.73K
Direxion Daily Semicondct Bull 3X ETF	6.37M	0.25%	11.73K
Vanguard Emerging Mkts Stock Idx Inv	5.66M	0.23%	-289.65K
State Street® SPDR® Portfolio EM ETF	4.28M	0.17%	-
SPDR® Portfolio Emerging Markets ETF	3.85M	0.15%	-
YieldMax Semiconductor Port Opt Inc ETF	2.17M	0.09%	-
Vanguard FTSE All-Wld ex-US ETF	2.09M	0.08%	-67.29K
Freedom 100 Emerging Markets ETF	1.90M	0.08%	-
Dimensional All Country ex US LgCap Core	1.78M	0.07%	148.64K
Vanguard Global Minimum Volatility Admr	1.23M	0.05%	-1.53M

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	-	1
2026 Q2	-	1
2026 Q1	-	-

UMC Ownership FAQ

Who owns the most shares of United Microelectronics?

United Microelectronics’s largest shareholders are Blackrock funding, inc. /de (31.54M shares, 1.26%), Vanguard group (13.52M shares, 0.54%), and Ubs group (11.63M shares, 0.47%). Together, they hold 2.27% of United Microelectronics’s total shares outstanding.

Does Blackrock own United Microelectronics?

BlackRock is not among the top 10 institutional shareholders of United Microelectronics.

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

Matthews capital management is United Microelectronics’s biggest shareholder by percentage of total assets invested, with 13.67% of its assets in 1.47M United Microelectronics shares, valued at 39.88M$.

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 0.84% of its total shares outstanding invested in 21.12M United Microelectronics shares.

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