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Jeff Yass’s United Microelectronic UMC Stock Holding History

Jeff Yass’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 		$26.6M Buy
977,700
+472,000
+93% +$8.07M ﹤0.01% 2150
2026
Q1 		$4.54M Buy
505,700
+234,600
+87% +$2.29M ﹤0.01% 4406
2025
Q4 		$2.13M Sell
271,100
-58,300
-18% -$442K ﹤0.01% 5527
2025
Q3 		$2.5M Buy
329,400
+163,100
+98% +$1.16M ﹤0.01% 5318
2025
Q2 		$1.27M Buy
166,300
+129,500
+352% +$961K ﹤0.01% 6824
2025
Q1 		$263K Buy
36,800
+11,600
+46% +$73.9K ﹤0.01% 10359
2024
Q4 		$164K Sell
25,200
-117,300
-82% -$840K ﹤0.01% 10949
2024
Q3 		$1.2M Sell
142,500
-143,700
-50% -$1.2M ﹤0.01% 6375
2024
Q2 		$2.51M Buy
286,200
+64,700
+29% +$534K ﹤0.01% 4642
2024
Q1 		$1.79M Sell
221,500
-184,200
-45% -$1.47M ﹤0.01% 5591
2023
Q4 		$3.43M Sell
405,700
-66,400
-14% -$506K ﹤0.01% 4348
2023
Q3 		$3.33M Sell
472,100
-143,300
-23% -$1.04M ﹤0.01% 4202
2023
Q2 		$4.86M Buy
615,400
+134,900
+28% +$1.11M ﹤0.01% 3582
2023
Q1 		$4.21M Sell
480,500
-915,100
-66% -$7.41M ﹤0.01% 3705
2022
Q4 		$9.11M Sell
1,395,600
-413,300
-23% -$2.74M ﹤0.01% 2389
2022
Q3 		$10.1M Sell
1,808,900
-89,700
-5% -$592K ﹤0.01% 2136
2022
Q2 		$12.9M Buy
1,898,600
+494,300
+35% +$4.05M ﹤0.01% 1891
2022
Q1 		$12.8M Buy
1,404,300
+65,900
+5% +$653K ﹤0.01% 2230
2021
Q4 		$15.7M Sell
1,338,400
-217,400
-14% -$2.42M ﹤0.01% 2120
2021
Q3 		$17.8M Buy
1,555,800
+619,300
+66% +$6.65M ﹤0.01% 2105
2021
Q2 		$8.85M Buy
936,500
+148,000
+19% +$1.39M ﹤0.01% 3096
2021
Q1 		$7.18M Buy
788,500
+269,000
+52% +$2.49M ﹤0.01% 3306
2020
Q4 		$4.38M Buy
519,500
+472,300
+1,001% +$3.08M ﹤0.01% 3638
2020
Q3 		$226K Buy
+47,200
New +$175K ﹤0.01% 9271

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

Jeff Yass's UMC Position: Q2 2026 in Review

Jeff Yass reduced its United Microelectronic (UMC) stake by 65% in Q2 2026, selling an estimated $6.4M and leaving 201,041 shares worth $5.47M. The position accounts for ﹤0.01% of the portfolio, ranked #4444.

Jeff Yass first reported a position in UMC in Q2 2013 and has held it in 46 quarters since. The position peaked at $15.5M in Q4 2021. 362 funds tracked by Wall St. Rank hold UMC as of Q2 2026.

  • Jeff Yass held 201,041 shares of United Microelectronic worth $5.47M as of Q2 2026.
  • Jeff Yass sold 374,697 United Microelectronic shares in Q2 2026, an estimated $6.4M.
  • United Microelectronic made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #4444 holding.
  • Jeff Yass first reported a position in United Microelectronic in Q2 2013 and has held it in 46 quarters since.
  • Jeff Yass's United Microelectronic position peaked at $15.5M in Q4 2021.
  • 362 funds tracked by Wall St. Rank held United Microelectronic as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.