Optiver Holding
UMC icon

Optiver Holding’s United Microelectronic UMC Stock Holding History

Optiver Holding’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 		$13K Buy
+479
New +$8.19K ﹤0.01% 1677
2025
Q4 		– Sell
-1
Closed -$8 – 3021
2025
Q3 		$8 Hold
1
– – ﹤0.01% 2658
2025
Q2 		$8 Buy
+1
New +$7 ﹤0.01% 1433

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

Optiver Holding's UMC Position: Q2 2026 in Review

Optiver Holding opened a new position in United Microelectronic (UMC) in Q2 2026: 479 shares worth $13K. The stake represents ﹤0.01% of the portfolio and ranks #1677 among its holdings. This is a return to the name: Optiver Holding previously reported a position in UMC as recently as Q3 2025.

Optiver Holding first reported a position in UMC in Q2 2025 and has held it in 3 quarters since. 362 funds tracked by Wall St. Rank hold UMC as of Q2 2026.

  • Optiver Holding held 479 shares of United Microelectronic worth $13K as of Q2 2026.
  • United Microelectronic was a new Optiver Holding position in Q2 2026.
  • United Microelectronic made up ﹤0.01% of Optiver Holding's portfolio in Q2 2026, its #1677 holding.
  • Optiver Holding first reported a position in United Microelectronic in Q2 2025 and has held it in 3 quarters since.
  • 362 funds tracked by Wall St. Rank held United Microelectronic as of Q2 2026.

Based on Optiver Holding's 13F filing for Q2 2026, filed 12 Aug 2026.