$UMC

$19.18 +$0.29 (1.54%) Close

$UMC Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 12.59B shares outstanding

Who owns UMC?

By type of holder

Institutions 0.0% Insiders 1.2% Everyone else 98.8%

Concentration Top 10 holders own 1.1%

Hung Chia-Tsung 0.5% · Wang Jason Shi 0.3%

Institutional ownership

0.0%

0.0 pts vs last qtr

Institutional holders

0 vs last qtr

Net shares bought

by institutions in Q2 2026

New / sold out

0 / 0

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

No 13F manager has reported this stock in the last 8 quarters.

Biggest buyers in Q2 2026

None.

Biggest sellers in Q2 2026

None.

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for United Microelectronics Corp in the last 12 months.

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for United Microelectronics Corp.

How patient are the owners?

No 13F manager reports holding UMC.

Super Investors

Investment managers reporting UMC on Form 13F

No 13F manager reports holding UMC yet.

Institutional Funds

Mutual funds and ETFs reporting UMC on Form N-PORT; together they hold 0.4% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
CR College Retirement Equities Fund - Total Global Stock Account College Retirement Equities Fund	$128M	23.8M	0.19%	0.09%	June 30, 2026
NE Nuveen Emerging Markets Equity Index Fund TIAA-CREF Funds	$33.8M	9.0M	0.07%	0.35%	July 31, 2026

College Retirement Equities Fund - Total Global Stock Account

College Retirement Equities Fund

Position value

$128M

% of company

0.19%

% of the fund

0.09%

As of

June 30, 2026

Nuveen Emerging Markets Equity Index Fund

TIAA-CREF Funds

Position value

$33.8M

% of company

0.07%

% of the fund

0.35%

As of

July 31, 2026

13 more funds behind a free account

See every fund holding United Microelectronics Corp and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
HC Hung Chia-Tsung Insider	64.5M	0.51%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.510% Hung Chia-Tsung's insider activity →
WJ Wang Jason Shi Insider	32.7M	0.26%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.260% Wang Jason Shi's insider activity →

Hung Chia-Tsung

Insider

64.5M

% of company

0.51%

Change vs last qtr

—

Held since

—

Wang Jason Shi

Insider

32.7M

% of company

0.26%

Change vs last qtr

—

Held since

—

23 more holders behind a free account

See every insider and 5%+ holder of United Microelectronics Corp.

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