United Microelectronics Corporation

UMC • XNYS

United Microelectronics Corporation is a publicly traded company on XNYS. As of Q3 2025, 222 institutional investors hold shares in this company, with total holdings valued at $992.8M. BlackRock, Inc. is the largest holder with a position valued at $183.0M.

Overview

Overview of institutional ownership in UMC as of Q3 2025

All Institutions

Institutions: 222
Value Held: $992.8M
Shares Held: 131.0M
Avg Position: $4.5M
Median Position: $185.2K

Hedge Funds

Hedge Funds: 20
Value Held: $61.6M
Shares Held: 8.1M
Avg Position: $3.1M
Median Position: $581.7K

Biggest Investors

Institutions with the largest positions in UMC as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
B BlackRock, Inc. Institution	-	$183.0M 0.00% of portfolio	0.00% 24.1M shares	Q4 2022 Held for 2y 11m	$5.67T
MORGAN STANLEY RIA/Wealth	Jed Finn CEO	$165.6M 0.01% of portfolio	0.00% 21.9M shares	Q4 2022 Held for 2y 11m	$1.65T
VANGUARD GROUP INC Institution	Salim Ramji CEO	$108.0M 0.00% of portfolio	0.00% 14.3M shares	Q4 2022 Held for 2y 11m	$6.69T
BANK OF AMERICA CORP /DE/ Institution	Brian T. Moynihan CEO	$56.0M 0.00% of portfolio	0.00% 7.4M shares	Q4 2022 Held for 2y 11m	$1.33T
R Rafferty Asset Management, LLC Institution	Douglas Michael Yones CEO	$47.2M 0.15% of portfolio	0.00% 6.2M shares	Q4 2022 Held for 2y 11m	$30.8B
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$34.3M 0.00% of portfolio	0.00% 4.5M shares	Q4 2022 Held for 2y 11m	$2.88T
GOLDMAN SACHS GROUP INC Institution	David M. Solomon CEO	$33.4M 0.00% of portfolio	0.00% 4.4M shares	Q4 2022 Held for 2y 11m	$691.34B
SCHRODER INVESTMENT MANAGEMENT GROUP RIA/Wealth	Toby James Glover CEO	$31.5M 0.03% of portfolio	0.00% 4.2M shares	Q4 2022 Held for 2y 11m	$125.97B
BARCLAYS PLC Institution	-	$30.9M 0.01% of portfolio	0.00% 4.1M shares	Q3 2025 Held for 2 months	$271.65B
UBS Group AG Institution	Sergio P. Ermotti CEO	$28.5M 0.01% of portfolio	0.00% 3.8M shares	Q3 2024 Held for 1y 2m	$511.54B

Net Capital Flow

Institutional buying and selling activity for UMC in Q3 2025

Traded: −$96.7M
Buyers: 114
Sellers: 114
Total Bought: +$126.7M
Total Sold: −$223.4M
Avg Position: $3.8M

Biggest Buyers

Institution	Net Bought	Current Position
BARCLAYS PLC Institution	+$30.9M +-1.2M shares	$30.9M 4.1M shares
TWO SIGMA INVESTMENTS LLC Hedge Fund•Multi-Strategy	+$23.9M +3.2M shares	$26.8M 3.5M shares
Marshall Wace LLP Institution	+$21.2M +2.8M shares	$21.2M 2.8M shares
TWO SIGMA ADVISERS, LLC Hedge Fund•Multi-Strategy	+$12.1M +1.6M shares	$12.2M 1.6M shares
M Man Group plc Institution	+$3.5M +463.2K shares	$3.7M 482.5K shares
BANK OF AMERICA CORP /DE/ Institution	+$2.6M +344.4K shares	$56.0M 7.4M shares
DIMENSIONAL FUND ADVISORS LP Long Only Manager	+$2.6M +341.0K shares	$15.8M 2.1M shares
FIRST TRUST ADVISORS LP ETF Provider	+$2.3M +305.5K shares	$3.2M 417.7K shares
Aquatic Capital Management LLC Hedge Fund•Quant	+$2.2M +285.0K shares	$2.2M 285.0K shares
$US BANCORP \DE\ logo$ US BANCORP \DE\ Institution	+$2.1M +274.2K shares	$4.1M 541.0K shares

Biggest Sellers

Institution	Net Sold	Current Position
UBS Group AG Institution	−$99.5M −13.1M shares	$28.5M 3.8M shares
M Maple Rock Capital Partners, Inc. Hedge Fund•Multi-Strategy	−$24.0M −3.1M shares	Sold Off 0 shares
R Rafferty Asset Management, LLC Institution	−$16.5M −2.2M shares	$47.2M 6.2M shares
CITIGROUP INC Institution	−$10.9M −1.4M shares	$17.4M 2.3M shares
K KADENSA CAPITAL Ltd Institution	−$10.2M −1.3M shares	Sold Off 0 shares
GOLDMAN SACHS GROUP INC Institution	−$8.9M −1.2M shares	$33.4M 4.4M shares
JPMORGAN CHASE & CO Institution	−$8.0M −1.1M shares	$4.6M 608.0K shares
C Crossmark Global Holdings, Inc. Institution	−$7.7M −1.0M shares	$2.0M 260.0K shares
Y Y-Intercept Ltd Institution	−$6.6M −875.0K shares	$722.9K 95.4K shares
VANGUARD GROUP INC Institution	−$4.3M −573.0K shares	$108.0M 14.3M shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited UMC in Q3 2025

New Positions: 17
New Value: $32.4M
Exited Positions: 37
Exited Value: $45.8M

New Positions

Institution	Position Value
BARCLAYS PLC Institution	$30.9M 4.1M shares
Ridgewood Investments LLC RIA/Wealth	$414.4K 54.7K shares
Encompass More Asset Management RIA/Wealth	$351.4K 46.4K shares
FourThought Financial Partners, LLC RIA/Wealth	$237.7K 31.4K shares
S Sageworth Trust Co Institution	$128.8K 17.0K shares
Sepio Capital, LLC RIA/Wealth	$115.9K 15.3K shares
CBOE Vest Financial, LLC ETF Provider	$105.2K 13.9K shares
We Are One Seven, LLC RIA/Wealth	$77.2K 10.2K shares
B Bank Julius Baer & Co. Ltd, Zurich Institution	$61.5K 8.1K shares
Westside Investment Management, Inc. RIA/Wealth	$11.8K 1.6K shares

Exited Positions

Institution	Previous Position
M Maple Rock Capital Partners, Inc. Hedge Fund•Multi-Strategy	$24.0M 3.1M shares
K KADENSA CAPITAL Ltd Institution	$10.2M 1.3M shares
D D. E. Shaw & Co., Inc. Institution	$3.7M 477.8K shares
ARROWSTREET CAPITAL LIMITED PARTNERSHIP Hedge Fund•Quant	$2.4M 317.3K shares
Schonfeld Strategic Advisors LLC Hedge Fund•Multi-Strategy	$1.0M 134.3K shares
S STIFEL FINANCIAL CORP Long Only Manager	$964.0K 126.0K shares
VICTORY CAPITAL MANAGEMENT INC Long Only Manager	$802.8K 104.9K shares
A AXA Institution	$482.0K 63.0K shares
Jain Global LLC Hedge Fund•Multi-Strategy	$376.4K 49.2K shares
JOHNSON INVESTMENT COUNSEL INC RIA/Wealth	$221.9K 29.0K shares

Options Activity

Institutions with the largest Call and Put options positions in UMC as of Q3 2025

Call Positions: 4
Call Value: $1.7M
Put Positions: 8
Put Value: $12.1M

Call Positions

Institution	Position Value
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$1.0M 1.4K contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$391.1K 516.0 contracts
Walleye Trading LLC RIA/Wealth	$222.1K 293.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$100.8K 133.0 contracts

Put Positions

Institution	Position Value
J JANE STREET GROUP, LLC Institution	$5.9M 7.7K contracts
UBS Group AG Institution	$2.6M 3.4K contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$2.5M 3.3K contracts
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	$639.8K 844.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$223.6K 295.0 contracts
P Parallax Volatility Advisers, LLC Hedge Fund•Vol Arbitrage	$151.6K 200.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$151.6K 200.0 contracts
Walleye Trading LLC RIA/Wealth	- - contracts

Most Committed Institutions

Institutions with UMC as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
W West Family Investments, Inc. Institution	-	0.30% $1.3M	0.00% 173.2K shares	Q4 2022 Held for 2y 11m	$444.5M
Bayforest Capital Ltd Hedge Fund•Quant	Theodoros Tsagaris CEO	0.22% $452.3K	0.00% 59.7K shares	Q2 2025 Held for 5 months	$209.9M
Redwood Wealth Management Group, LLC RIA/Wealth	Samuel Clay Bridgers Managing Partner	0.18% $244.1K	0.00% 32.2K shares	Q4 2022 Held for 2y 11m	$139.1M
Ridgewood Investments LLC RIA/Wealth	Kaushal Bhupendra Majmudar President	0.17% $414.4K	0.00% 54.7K shares	Q3 2025 Held for 2 months	$237.0M
First Affirmative Financial Network RIA/Wealth	George Richard Gay CEO	0.16% $345.5K	0.00% 45.6K shares	Q3 2024 Held for 1y 2m	$210.1M
Moran Wealth Management, LLC RIA/Wealth	Thomas Michael Moran Managing Partner	0.16% $5.3M	0.00% 696.5K shares	Q3 2023 Held for 2y 2m	$3.3B
R Rafferty Asset Management, LLC Institution	Douglas Michael Yones CEO	0.15% $47.2M	0.00% 6.2M shares	Q4 2022 Held for 2y 11m	$30.8B
Ignite Planners, LLC RIA/Wealth	David John Allred Managing Partner	0.14% $838.9K	0.00% 110.7K shares	Q3 2023 Held for 2y 2m	$600.7M
A Ariadne Wealth Management, LP RIA/Wealth	Gene Lewis Dongieux CCO	0.13% $297.9K	0.00% 41.9K shares	Q3 2024 Held for 1y 2m	$223.1M
G Generali Investments CEE, investicni spolecnost, a.s. Institution	-	0.13% $1.3M	0.00% 169.4K shares	Q4 2024 Held for 11 months	$983.3M