Parallax Volatility Advisers
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Parallax Volatility Advisers’s United Microelectronic UMC Stock Holding History

Parallax Volatility Advisers’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
Q1 		– Sell
-20,000
Closed -$157K – 1852
2025
Q4 		$157K Hold
20,000
– – ﹤0.01% 1406
2025
Q3 		$152K Hold
20,000
– – ﹤0.01% 1394
2025
Q2 		$153K Hold
20,000
– – ﹤0.01% 1361
2025
Q1 		$143K Sell
20,000
-127,700
-86% -$814K ﹤0.01% 1347
2024
Q4 		$959K Hold
147,700
– – ﹤0.01% 1343
2024
Q3 		$1.24M Hold
147,700
– – ﹤0.01% 1296
2024
Q2 		$1.29M Buy
147,700
+97,400
+194% +$803K ﹤0.01% 1178
2024
Q1 		$407K Sell
50,300
-18,400
-27% -$146K ﹤0.01% 1456
2023
Q4 		$581K Buy
+68,700
New +$524K ﹤0.01% 1563
2023
Q2 		– Sell
-300,000
Closed -$2.63M – 2874
2023
Q1 		$2.63M Sell
300,000
-133,000
-31% -$1.08M 0.01% 1140
2022
Q4 		$2.83M Buy
433,000
+8,000
+2% +$53K ﹤0.01% 1265
2022
Q3 		$2.37M Buy
425,000
+75,000
+21% +$495K ﹤0.01% 1341
2022
Q2 		$2.37M Sell
350,000
-100,000
-22% -$820K ﹤0.01% 1279
2022
Q1 		$4.1M Sell
450,000
-175,200
-28% -$1.74M ﹤0.01% 1066
2021
Q4 		$7.32M Buy
625,200
+500,000
+399% +$5.56M 0.01% 692
2021
Q3 		$1.43M Sell
125,200
-1,398,800
-92% -$15M ﹤0.01% 1228
2021
Q2 		$14.4M Buy
1,524,000
+636,100
+72% +$5.96M 0.02% 433
2021
Q1 		$8.09M Buy
+887,900
New +$8.21M 0.02% 431

Other funds holding UMC

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
Man Group
Man Group London, United Kingdom $55.1B AUM 24.23% 1-Year Est. Return
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $89.9B AUM 20.22% 1-Year Est. Return

Parallax Volatility Advisers's UMC Position: Q1 2026 in Review

Parallax Volatility Advisers sold out of United Microelectronic (UMC) in Q1 2026, closing a stake of 2,550 shares — an estimated $20K sold.

Parallax Volatility Advisers first reported a position in UMC in Q1 2021 and held it in 13 quarters. The position peaked at $2.04M in Q1 2021. 317 funds tracked by Wall St. Rank hold UMC as of Q1 2026.

  • Parallax Volatility Advisers reported no remaining United Microelectronic position as of Q1 2026 after selling out during the quarter.
  • Parallax Volatility Advisers sold 2,550 United Microelectronic shares in Q1 2026, an estimated $20K.
  • Parallax Volatility Advisers first reported a position in United Microelectronic in Q1 2021 and held it in 13 quarters.
  • Parallax Volatility Advisers's United Microelectronic position peaked at $2.04M in Q1 2021.
  • 317 funds tracked by Wall St. Rank held United Microelectronic as of Q1 2026.

Based on Parallax Volatility Advisers's 13F filing for Q1 2026, filed 15 May 2026.