Vanguard Portfolio Management
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Vanguard Portfolio Management’s United Microelectronic UMC Stock Holding History

Vanguard Portfolio Management’s Portfolio UMC Stock Details UMC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$33.5M Sell
1,231,451
-1,531,631
-55% -$26.2M ﹤0.01% 1827
2026
Q1 		$24.8M Buy
+2,763,082
New +$26.9M ﹤0.01% 1834

Other funds holding UMC

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Rafferty Asset Management
Rafferty Asset Management New York $43.9B AUM 121.74% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Man Group
Man Group London, United Kingdom $62.7B AUM 29.77% 1-Year Est. Return

Vanguard Portfolio Management's UMC Position: Q2 2026 in Review

Vanguard Portfolio Management reduced its United Microelectronic (UMC) stake by 55% in Q2 2026, selling an estimated $26.2M and leaving 1,231,451 shares worth $33.5M. The position accounts for ﹤0.01% of the portfolio, ranked #1827.

Vanguard Portfolio Management first reported a position in UMC in Q1 2026 and has held it in 2 quarters since. 362 funds tracked by Wall St. Rank hold UMC as of Q2 2026.

  • Vanguard Portfolio Management held 1,231,451 shares of United Microelectronic worth $33.5M as of Q2 2026.
  • Vanguard Portfolio Management sold 1,531,631 United Microelectronic shares in Q2 2026, an estimated $26.2M.
  • United Microelectronic made up ﹤0.01% of Vanguard Portfolio Management's portfolio in Q2 2026, its #1827 holding.
  • Vanguard Portfolio Management first reported a position in United Microelectronic in Q1 2026 and has held it in 2 quarters since.
  • 362 funds tracked by Wall St. Rank held United Microelectronic as of Q2 2026.

Based on Vanguard Portfolio Management's 13F filing for Q2 2026, filed 13 Aug 2026.