United Microelectronics Corp

UMC

Exchange: NYSE
Industry: Semiconductors & Related Devices
SEC CIK: 0001033767

SEC filings (opens in a new tab)

No open-market purchases or sales by United Microelectronics Corp insiders were filed in the last 90 days; 365 institutions reported holding it in 13F filings for Q2 2026, worth $4.89B in total; Maverick Capital is the only superinvestor holding it.

Q4 2025 vs. Q3 2025

How the institutions holding United Microelectronics Corp changed between Q3 2025 and Q4 2025.

All holders in Q4 2025 All holders in Q3 2025

13F holders of UMC: Q3 2025 compared with Q4 2025
Measure	Q3 2025	Of which not filed for Q4 2025	Q4 2025	Change
Holders	240	7	271	+38
Shares	132.6M	543.1K	152.3M	+20.3M (+15.3%)
Value	$1.00B	$4.12M	$1.19B	+$190.1M (+19.0%)

7 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (62)

Institutions that held United Microelectronics Corp at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to UMC in Q4 2025
Institution	Shares	Value	% of portfolio
Kadensa Capital Ltd	1,335,392	$10.5M	1.09%
D. E. Shaw & Co., Inc.	870,260	$6.84M	0.01%
B. Metzler seel. Sohn & Co. AG	658,821	$5.20M	0.05%
Laird Norton Trust Company, LLC	455,045	$3.58M	0.07%
Eurizon Capital SGR S.p.A.	446,513	$3.55M	0.01%
BNP PARIBAS ASSET MANAGEMENT Holding S.A.	309,658	$2.43M	0.00%
Qube Research & Technologies Ltd	263,116	$2.07M	0.00%
Robeco Institutional Asset Management B.V.	244,771	$1.92M	0.00%
Pacer Advisors, Inc.	1,193,142	$1.87M	0.00%
NLB Skladi, upravljanje premozenja, d.o.o.	172,358	$1.35M	0.06%
CWM Advisors, LLC	166,912	$1.31M	0.12%
Arrowstreet Capital, Limited Partnership	128,821	$1.01M	0.00%
FIL Ltd	78,854	$619.8K	0.00%
Vestmark Advisory Solutions, Inc.	75,826	$596.0K	0.01%
Abacus Wealth Partners, LLC	56,625	$445.1K	0.04%
Arta Finance Wealth Management LLC	39,294	$308.9K	0.16%
PCM Encore, LLC	36,659	$288.1K	0.06%
Vontobel Holding Ltd.	30,387	$238.8K	0.00%
Glenmede Trust Co NA	29,049	$228.3K	0.00%
Focused Alpha, LLC	28,108	$220.9K	0.06%
R Squared Ltd	27,926	$219.5K	0.10%
Greenspring Advisors, LLC	26,013	$204.5K	0.01%
UBS Asset Management Americas Inc	25,895	$203.5K	0.00%
Abn Amro Investment Solutions	21,900	$172.1K	0.00%
Resonant Capital Advisors, LLC	20,804	$163.5K	0.01%
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management	19,890	$156.3K	0.00%
Flow Traders U.S. LLC	18,508	$145.0K	0.00%
Argos Wealth Advisors, LLC	18,193	$143.0K	0.04%
EP Wealth Advisors, LLC	17,112	$134.5K	0.00%
Walleye Capital LLC	16,240	$127.6K	0.00%
Venturi Wealth Management, LLC	14,614	$114.9K	0.01%
Connor, Clark & Lunn Investment Management Ltd.	14,467	$113.7K	0.00%
Basecamp Wealth Advisors LLC	13,779	$108.3K	0.02%
Tuttle Tactical Management	13,663	$107.4K	0.24%
Centiva Capital, LP	13,269	$104.3K	0.01%
Syon Capital LLC	13,069	$102.7K	0.01%
Choate Investment Advisors	12,864	$101.1K	0.00%
Scientech Research LLC	12,745	$100.2K	0.06%
Enterprise Financial Services Corp	12,212	$96.0K	0.05%
Dynamic Advisor Solutions LLC	11,655	$91.6K	0.00%
Hardy Reed LLC	11,228	$88.3K	0.01%
Graham Capital Management, L.P.	11,213	$88.1K	0.00%
RSM US Wealth Management LLC	10,488	$83.5K	0.00%
Merit Financial Group, LLC	10,389	$81.7K	0.00%
Cary Street Partner Investment Advisory LLC	9,553	$75.1K	0.02%
Kestra Advisory Services, LLC	6,679	$52.5K	0.00%
Parvin Asset Management, LLC	6,600	$51.9K	0.04%
TD Private Client Wealth LLC	4,096	$32.2K	0.00%
SageView Advisory Group, LLC	2,471	$19.4K	0.00%
SHP Wealth Management	1,878	$14.8K	0.00%
Banque Cantonale Vaudoise	1,549	$12.0K	0.00%
Cary Street Partners Financial LLC	1,000	$7.86K	0.00%
Elevated Capital Advisors, LLC	500	$3.93K	0.00%
Cornerstone Financial Management LLC	494	$3.88K	0.00%
Brown Brothers Harriman & Co	458	$3.60K	0.00%
Clear Street Markets LLC	363	$2.85K	0.00%
Safe Harbor Fiduciary, LLC	300	$2.36K	0.00%
Trust Co	158	$1.24K	0.00%
Financial Consulate, Inc	103	$810	0.00%
Bayban	100	$786	0.00%
Transamerica Financial Advisors, Inc.	49	$385	0.00%
Sofos Investments, Inc.	1	$8	0.00%

Sold out (24)

Institutions that held United Microelectronics Corp at the end of Q3 2025 and filed for Q4 2025 without it.

Institutions that sold out of UMC in Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
Squarepoint Ops LLC	234,183	$1.78M
Y-Intercept (Hong Kong) Ltd	95,369	$722.9K
Hennion & Walsh Asset Management, Inc.	86,571	$656.2K
Aigen Investment Management, LP	53,905	$408.6K
Encompass More Asset Management	46,355	$351.4K
Verition Fund Management LLC	46,152	$349.8K
Redwood Wealth Management Group, LLC	32,200	$244.1K
EntryPoint Capital, LLC	20,397	$154.6K
CIBC World Markets Inc.	19,307	$146.3K
Diametric Capital, LP	17,238	$130.7K
Sageworth Trust Co	16,994	$128.8K
XTX Topco Ltd	16,736	$126.9K
Barometer Capital Management Inc.	15,447	$117.1K
Legal & General Group Plc	14,134	$107.1K
Arete Wealth Advisors, LLC	12,857	$97.0K
Mitsubishi UFJ Trust & Banking Corp	10,300	$78.1K
Rockefeller Capital Management L.P.	2,826	$21.4K
Simplex Trading, LLC	2,430	$18.0K
Umb Bank N A	1,725	$13.1K
GPS Wealth Strategies Group, LLC	786	$5.96K
Advisory Services Network, LLC	419	$3.18K
Principal Securities, Inc.	278	$2.11K
Groupe la Francaise	1,400	$297
Optiver Holding B.V.	1	$8

Not filed for Q4 2025 yet (7)

Institutions that held United Microelectronics Corp at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding UMC in Q3 2025 that haven't filed for Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
Wetherby Asset Management Inc	320,156	$2.43M
AXA Investment Managers S.A.	71,783	$544.1K
Ridgewood Investments LLC	54,667	$414.4K
First Affirmative Financial Network	45,578	$345.5K
Glenmede Investment Management, LP	27,377	$207.5K
Wealthstream Advisors, Inc.	23,586	$178.8K
Creekmur Asset Management LLC	1	$4