UMC
UNITED MICRO SP ADR (UMC)
NYSE
$18.30-$0.04 (-0.23%)
Price as of Aug 21, 2026 7:59 PM EDT
  • $46.0B
    Market Cap
  • 175.54%
    1-Year Change
  • Semiconductors
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK, INC.
1.26%
31.5M
+4.0M (+12.83%)
Jun 30, 2026
BLACKROCK FUNDING, INC. /DE
0.95%
23.6M
+657,234 (+2.78%)
Dec 31, 2024
BLACKROCK INC.
0.93%
23.1M
+980,055 (+4.24%)
Jun 30, 2024
VANGUARD GROUP INC
0.54%
13.5M
-728,404 (-5.39%)
Dec 31, 2025
UBS GROUP AG
0.47%
11.6M
+3.5M (+29.72%)
Jun 30, 2026
GOLDMAN SACHS GROUP INC
0.45%
11.1M
+5.2M (+47.12%)
Jun 30, 2026
BANK OF AMERICA CORP /DE/
0.41%
10.2M
+7.6M (+74.43%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions2.7B (80.42%)
  • Mutual Funds619.1M (18.29%)
  • Insiders43.7M (1.29%)
  • Other0 (0.00%)

Insider Transactions

  • 1.29% (43.7M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 1
    Number of InsiderSelling (last 12 months)
  • $220.4M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Liu Chitung
CFO & SVP
Sell
Jul 13, 2026
$294.3M
1.9M
$154.89
3.3M