13F Insight
DOSSIER · 13F Holders · Q1 2026Technology · Semiconductors & Related DevicesBellwetherCompounder
UMC

UNITED MICROELECTRONICS CORP

329 institutions still hold UNITED MICROELECTRONICS CORP as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 910873405·Semiconductors & Related Devices·329 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 4.5%
vs prior quarter
13F value held
$1.2B
49.0% inst. owned
of float
Holders
329
-84 QoQ
filers reporting
Activity
+88 / −37
+922 added · −828 reduced
this quarter
Concentration
20.27%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

329 institutions reported UMC in Q1 2026. BlackRock, Inc. leads at 20.3% of the visible book. -84 net institutions QoQ — distribution reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$247M27.5M0.00%Q1 202602
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$132M14.7M0.06%Q1 202603
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$87M9.7M0.07%Q1 202604
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$81M9.0M0.00%Q1 202605
MORGAN STANLEY
CIK 0000895421
$79M8.8M0.00%Q1 202606
UBS Group AG
CIK 0001610520
$76M8.5M0.01%Q1 202607
GOLDMAN SACHS GROUP INC
CIK 0000886982
$53M5.9M0.01%Q1 202608
Man Group plc
CIK 0001637460
$51M5.7M0.09%Q1 202609
Qube Research & Technologies Ltd
CIK 0001729829
$46M5.1M0.05%Q1 202610
STATE STREET CORP
CIK 0000093751
$45M5.0M0.00%Q1 202611
Rafferty Asset Management, LLC
CIK 0001389426
$45M5.0M0.18%Q1 202612
BARCLAYS PLC
CIK 0000312069
$43M4.7M0.01%Q1 202613
CITIGROUP INC
CIK 0000831001
$39M4.3M0.02%Q1 202614
MARSHALL WACE, LLP
CIK 0001318757
$37M4.7M0.03%Q4 202515
NORTHERN TRUST CORP
CIK 0000073124· Index
$29M3.2M0.00%Q1 202616
TWO SIGMA ADVISERS, LP
CIK 0001478735
$27M3.4M0.05%Q4 202517
Tidal Investments LLC
CIK 0001600064
$27M3.0M0.06%Q1 202618
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$26M2.8M0.01%Q1 202619
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$25M2.8M0.00%Q1 202620
Vanguard Portfolio Management
CIK 0002100121
$25M2.8M0.00%Q1 2026
Page 1 of 17
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