Citadel Advisors
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Citadel Advisors’s United Microelectronic UMC Stock Holding History

Citadel Advisors’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 		$21.6M Buy
792,200
+663,500
+516% +$11.3M ﹤0.01% 2478
2026
Q1 		$1.16M Buy
128,700
+20,700
+19% +$202K ﹤0.01% 7330
2025
Q4 		$849K Sell
108,000
-27,400
-20% -$208K ﹤0.01% 7772
2025
Q3 		$1.03M Buy
135,400
+107,700
+389% +$764K ﹤0.01% 7492
2025
Q2 		$212K Sell
27,700
-1,700
-6% -$12.6K ﹤0.01% 10554
2025
Q1 		$210K Buy
29,400
+26,100
+791% +$166K ﹤0.01% 10350
2024
Q4 		$21.4K Sell
3,300
-68,800
-95% -$493K ﹤0.01% 13136
2024
Q3 		$607K Buy
72,100
+60,300
+511% +$504K ﹤0.01% 7845
2024
Q2 		$103K Sell
11,800
-27,800
-70% -$229K ﹤0.01% 10865
2024
Q1 		$320K Sell
39,600
-65,300
-62% -$520K ﹤0.01% 9314
2023
Q4 		$887K Sell
104,900
-18,100
-15% -$138K ﹤0.01% 6906
2023
Q3 		$868K Sell
123,000
-2,200
-2% -$15.9K ﹤0.01% 6875
2023
Q2 		$988K Sell
125,200
-325,500
-72% -$2.68M ﹤0.01% 6473
2023
Q1 		$3.95M Sell
450,700
-235,300
-34% -$1.91M ﹤0.01% 4183
2022
Q4 		$4.48M Sell
686,000
-736,300
-52% -$4.88M ﹤0.01% 4042
2022
Q3 		$7.92M Buy
1,422,300
+905,800
+175% +$5.98M ﹤0.01% 3098
2022
Q2 		$3.5M Sell
516,500
-316,700
-38% -$2.6M ﹤0.01% 4475
2022
Q1 		$7.6M Buy
833,200
+429,400
+106% +$4.25M ﹤0.01% 3410
2021
Q4 		$4.72M Buy
403,800
+333,000
+470% +$3.7M ﹤0.01% 4394
2021
Q3 		$809K Buy
70,800
+8,600
+14% +$92.3K ﹤0.01% 8675
2021
Q2 		$588K Sell
62,200
-37,700
-38% -$353K ﹤0.01% 9674
2021
Q1 		$910K Sell
99,900
-106,900
-52% -$989K ﹤0.01% 8354
2020
Q4 		$1.74M Buy
206,800
+159,200
+334% +$1.04M ﹤0.01% 5644
2020
Q3 		$228K Buy
+47,600
New +$177K ﹤0.01% 8610

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

Citadel Advisors's UMC Position: Q2 2026 in Review

Citadel Advisors reduced its United Microelectronic (UMC) stake by 73% in Q2 2026, selling an estimated $9.49M and leaving 210,158 shares worth $5.72M. The position accounts for ﹤0.01% of the portfolio, ranked #4494.

Citadel Advisors first reported a position in UMC in Q2 2013 and has held it in 46 quarters since. The position peaked at $18.6M in Q1 2025. 362 funds tracked by Wall St. Rank hold UMC as of Q2 2026.

  • Citadel Advisors held 210,158 shares of United Microelectronic worth $5.72M as of Q2 2026.
  • Citadel Advisors sold 555,164 United Microelectronic shares in Q2 2026, an estimated $9.49M.
  • United Microelectronic made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #4494 holding.
  • Citadel Advisors first reported a position in United Microelectronic in Q2 2013 and has held it in 46 quarters since.
  • Citadel Advisors's United Microelectronic position peaked at $18.6M in Q1 2025.
  • 362 funds tracked by Wall St. Rank held United Microelectronic as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.