Jane Street
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Jane Street’s United Microelectronic UMC Stock Holding History

Jane Street’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 		$27.6M Buy
+1,013,000
New +$17.3M ﹤0.01% 1863
2026
Q1 		– Sell
-770,100
Closed -$6.05M – 13047
2025
Q4 		$6.05M Sell
770,100
-2,800
-0.4% -$21.2K ﹤0.01% 2953
2025
Q3 		$5.86M Sell
772,900
-7,100
-0.9% -$50.4K ﹤0.01% 3189
2025
Q2 		$5.97M Sell
780,000
-2,800
-0.4% -$20.8K ﹤0.01% 2772
2025
Q1 		$5.6M Buy
+782,800
New +$4.99M ﹤0.01% 2771
2023
Q3 		– Sell
-35,400
Closed -$279K – 9433
2023
Q2 		$279K Buy
35,400
+4,400
+14% +$36.2K ﹤0.01% 7244
2023
Q1 		$272K Buy
31,000
+5,700
+23% +$46.2K ﹤0.01% 7355
2022
Q4 		$165K Sell
25,300
-39,000
-61% -$258K ﹤0.01% 7808
2022
Q3 		$358K Sell
64,300
-27,300
-30% -$180K ﹤0.01% 7296
2022
Q2 		$620K Buy
91,600
+26,000
+40% +$213K ﹤0.01% 6352
2022
Q1 		$598K Sell
65,600
-56,000
-46% -$555K ﹤0.01% 7135
2021
Q4 		$1.42M Sell
121,600
-67,800
-36% -$754K ﹤0.01% 5201
2021
Q3 		$2.17M Buy
189,400
+37,100
+24% +$398K ﹤0.01% 4316
2021
Q2 		$1.44M Buy
152,300
+64,500
+73% +$604K ﹤0.01% 5018
2021
Q1 		$800K Buy
+87,800
New +$812K ﹤0.01% 5891

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

Jane Street's UMC Position: Q2 2026 in Review

Jane Street sold out of United Microelectronic (UMC) in Q2 2026, closing a stake of 2,570,219 shares — an estimated $43.9M sold.

Jane Street first reported a position in UMC in Q2 2013 and held it in 46 quarters. The position peaked at $23.1M in Q1 2026. 363 funds tracked by Wall St. Rank hold UMC as of Q2 2026.

  • Jane Street reported no remaining United Microelectronic position as of Q2 2026 after selling out during the quarter.
  • Jane Street sold 2,570,219 United Microelectronic shares in Q2 2026, an estimated $43.9M.
  • Jane Street first reported a position in United Microelectronic in Q2 2013 and held it in 46 quarters.
  • Jane Street's United Microelectronic position peaked at $23.1M in Q1 2026.
  • 363 funds tracked by Wall St. Rank held United Microelectronic as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.