Company · Ownership research

UNITED MICROELECTRONICS CORP UMC

CIK 0001033767 · CUSIP 910873405

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 910873405 (UMC), not CUSIP 910873955 (UMC), CUSIP 910873905 (UMC), and does not merge CUSIPs.

This page lists the top 20 of 238 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock Inc. CIK 1364742 · View history	$202.42M 23,107,613 shares	0.00%	+980.05K(+4.40%)Added	SEC filing ↗ Aug 13, 2024	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$133.31M 15,217,790 shares	0.00%	-121.22K(-0.80%)Reduced	SEC filing ↗ Aug 13, 2024	▾
03	BANK OF AMERICA CORP /DE/ CIK 70858 · View history	$74.76M 8,533,749 shares	0.01%	+867.50K(+11.30%)Added	SEC filing ↗ Aug 14, 2024	▾
04	Fisher Asset Management, LLC CIK 850529 · View history	$67.17M 7,667,305 shares	0.03%	-243.56K(-3.10%)Reduced	SEC filing ↗ Aug 14, 2024	▾
05	MORGAN STANLEY CIK 895421 · Amended · View history	$61.31M 6,999,311 shares	0.00%	-1.61M(-18.70%)Reduced	SEC filing ↗ May 14, 2025	▾
06	UBS Group AG CIK 1610520 · View history	$55.05M 6,284,058 shares	0.02%	-2.08M(-24.90%)Reduced	SEC filing ↗ Aug 14, 2024	▾
07	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$53.21M 6,074,305 shares	0.01%	-856.73K(-12.40%)Reduced	SEC filing ↗ Aug 13, 2024	▾
08	Rafferty Asset Management, LLC CIK 1389426 · View history	$52.04M 5,940,118 shares	0.19%	-687.87K(-10.40%)Reduced	SEC filing ↗ Aug 13, 2024	▾
09	MARSHALL WACE, LLP CIK 1318757 · View history	$45.97M 5,248,227 shares	0.07%	+4.58M(+682.10%)Added	SEC filing ↗ Aug 14, 2024	▾
10	CITIGROUP INC CIK 831001 · View history	$38.87M 4,437,502 shares	0.04%	+440.09K(+11.00%)Added	SEC filing ↗ Aug 12, 2024	▾
11	Genesis Investment Management, LLP CIK 1300979 · View history	$33.98M 3,879,321 shares	6.68%	+1.74M(+81.70%)Added	SEC filing ↗ Jul 12, 2024	▾
12	STATE STREET CORP CIK 93751 · View history	$31.61M 3,608,519 shares	0.00%	-10.74K(-0.30%)Reduced	SEC filing ↗ Aug 14, 2024	▾
13	SCHRODER INVESTMENT MANAGEMENT GROUP CIK 1086619 · View history	$26.26M 2,997,229 shares	0.03%	-292.42K(-8.90%)Reduced	SEC filing ↗ Aug 12, 2024	▾
14	BARCLAYS PLC CIK 312069 · Amended · View history	$25.98M 2,965,550 shares	0.01%	-427.91K(-12.60%)Reduced	SEC filing ↗ Mar 23, 2026	▾
15	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history	$23.24M 2,653,327 shares	0.02%	-1.64M(-38.20%)Reduced	SEC filing ↗ Aug 14, 2024	▾
16	TWO SIGMA INVESTMENTS, LP CIK 1179392 · View history	$17.13M 1,955,053 shares	0.04%	+1.94M(+14,711.00%)Added	SEC filing ↗ Aug 14, 2024	▾
17	VOLORIDGE INVESTMENT MANAGEMENT, LLC CIK 1556921 · View history	$16.21M 1,850,888 shares	0.06%	+1.85MNew	SEC filing ↗ Aug 14, 2024	▾
18	Crossmark Global Holdings, Inc. CIK 1539204 · View history	$11.18M 1,275,867 shares	0.21%	-44.37K(-3.40%)Reduced	SEC filing ↗ Jul 29, 2024	▾
19	BNP PARIBAS FINANCIAL MARKETS CIK 1166588 · View history	$8.91M 1,017,288 shares	0.01%	-894.46K(-46.80%)Reduced	SEC filing ↗ Aug 13, 2024	▾
20	NORTHERN TRUST CORP CIK 73124 · View history	$8.58M 979,588 shares	0.00%	-80.06K(-7.60%)Reduced	SEC filing ↗ Aug 14, 2024	▾

Showing 20 / 238 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

238

Cancelled or null records excluded

Disclosed shares

132,151,682

Not deduplicated across managers

Disclosed value

$1.16B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

UNITED MICROELECTRONICS CORP · Q2 2024

Explore all 238 reporting institutions.

This page includes 20 of 238 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.