UNITED MICROELECTRONICS CORP

UMCNYSE

$23.92-2.35 (-8.95%)as of Oct 5, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

UNITED MICROELECTRONICS CORP price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (+225.4%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
BlackRock, Inc.	0.25%	$858M	0.01%	Not reported
UBS Group AG	0.09%	$317M	0.04%	Not reported
Goldman Sachs Group Inc	0.09%	$302M	0.03%	Not reported
Bank of America Corp	0.08%	$277M	0.02%	Not reported
Vanguard Capital Management LLC	0.07%	$234M	0.01%	Not reported
Morgan Stanley	0.07%	$225M	0.01%	Not reported
AQR Capital Management LLC	0.06%	$210M	0.07%	Not reported
Rafferty Asset Management, LLC	0.06%	$208M	0.47%	Add 53.57%
Acadian Asset Management LLC	0.05%	$157M	0.19%	Not reported
Man Group plc	0.04%	$152M	0.24%	Not reported
Citigroup Inc	0.04%	$147M	0.05%	Not reported
Barclays PLC	0.04%	$133M	0.03%	Not reported
State Street Corp	0.04%	$133M	0.00%	Not reported
Neuberger Berman Group LLC	0.03%	$111M	0.07%	Not reported
Northern Trust Corp	0.03%	$108M	0.01%	Not reported
JPMorgan Chase & Co	0.03%	$98.3M	0.01%	Not reported
Dimensional Fund Advisors LP	0.03%	$87.6M	0.02%	Not reported
Two Sigma Investments, LP	0.02%	$84M	0.06%	Not reported
Creative Planning	0.02%	$66.7M	0.04%	Not reported
Tidal Investments LLC	0.02%	$64.1M	0.11%	Add 47.56%
Empowered Funds, LLC	0.02%	$51.5M	0.27%	New Not reported
Matthews International Capital Management LLC	0.01%	$39.9M	13.67%	Add 49.92%
Vanguard Portfolio Management LLC	0.01%	$33.5M	0.00%	Not reported
BNP Paribas Financial Markets	0.01%	$30.7M	0.01%	Not reported
E Fund Management Co., Ltd.	0.01%	$27.1M	0.61%	New Not reported
Capital Fund Management S.A.	0.01%	$24.4M	0.11%	Add 20.39%
Nomura Holdings Inc	0.01%	$22.1M	0.03%	Not reported
Quantinno Capital Management LP	0.01%	$21.5M	0.03%	Add 11.33%
BNP PARIBAS ASSET MANAGEMENT Holding S.A.	0.01%	$20.9M	0.02%	Reduce 26.75%
SG Americas Securities, LLC	0.01%	$18.7M	0.01%	Not reported
US Bancorp \de\	0.01%	$18.6M	0.02%	Not reported
Mackenzie Financial Corp	0.00%	$16.7M	0.02%	Not reported
Squarepoint Ops LLC	0.00%	$16.4M	0.02%	Not reported
Vident Advisory, LLC	0.00%	$14.9M	0.11%	Reduce 13.59%
Millennium Management LLC	0.00%	$13.8M	0.01%	Not reported
Rhumbline Advisers	0.00%	$13.4M	0.01%	Not reported
Laird Norton Wetherby Trust Company, LLC	0.00%	$13M	0.25%	Add 3.33%
Vanguard Personalized Indexing Management, LLC	0.00%	$11.8M	0.10%	Not reported
LSV Asset Management	0.00%	$11.8M	0.02%	Reduce 37.46%
Guggenheim Capital LLC	0.00%	$11.5M	0.07%	Reduce 2.14%
Vanguard Fiduciary Trust Co	0.00%	$11.4M	0.00%	Not reported
Advisors Asset Management, Inc.	0.00%	$10.5M	0.16%	Not reported
Ethic Inc.	0.00%	$10.2M	0.13%	Reduce 15.51%
Nykredit A/S	0.00%	$9.52M	0.03%	Not reported
First Trust Advisors LP	0.00%	$9.41M	0.01%	Reduce 14.90%
Nuveen, LLC	0.00%	$7.01M	0.00%	Not reported
Wellington Management Group LLP	0.00%	$6.29M	0.00%	Add 137.59%
Signaturefd, LLC	0.00%	$6.23M	0.08%	Not reported
Schroder Investment Management Group	0.00%	$6.12M	0.00%	Reduce 22.23%
Russell Investments Group, Ltd.	0.00%	$6.07M	0.01%	Not reported

50 of 335 holders

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