UMC
UNITED MICRO SP ADR (UMC)
NYSE
$19.05+$0.02 (+0.11%)
Price as of Jul 31, 2026 7:54 PM EDT
  • $47.8B
    Market Cap
  • 184.36%
    1-Year Change
  • Semiconductors
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK, INC.
1.10%
27.5M
+512,365 (+1.86%)
Mar 31, 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
AQR CAPITAL MANAGEMENT LLC
0.59%
14.7M
+5.2M (+35.68%)
Mar 31, 2026
VANGUARD GROUP INC
0.54%
13.5M
-728,404 (-5.39%)
Dec 31, 2025
TWO SIGMA INVESTMENTS, LP
0.39%
9.7M
+4.0M (+41.22%)
Mar 31, 2026
MORGAN STANLEY
0.35%
8.8M
+1.1M (+12.63%)
Mar 31, 2026

Current Ownership Distribution

  • Institutions2.5B (79.32%)
  • Mutual Funds619.1M (19.32%)
  • Insiders43.7M (1.36%)
  • Other0 (0.00%)

Insider Transactions

  • 1.36% (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