Simplex Trading
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Simplex Trading’s United Microelectronic UMC Stock Holding History

Simplex Trading’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 		$5.41M Buy
198,900
+74,800
+60% +$1.28M ﹤0.01% 1154
2026
Q1 		$1.11M Buy
+124,100
New +$1.21M ﹤0.01% 2398
2025
Q4 		– Sell
-11,600
Closed -$87K – 10145
2025
Q3 		$87K Buy
11,600
+4,400
+61% +$31.2K ﹤0.01% 5922
2025
Q2 		$55K Sell
7,200
-7,300
-50% -$54.2K ﹤0.01% 5840
2025
Q1 		$103K Buy
14,500
+5,700
+65% +$36.3K ﹤0.01% 5029
2024
Q4 		$57K Sell
8,800
-10,400
-54% -$74.5K ﹤0.01% 5751
2024
Q3 		$161K Sell
19,200
-60,300
-76% -$504K ﹤0.01% 4741
2024
Q2 		$696K Sell
79,500
-26,500
-25% -$219K ﹤0.01% 3299
2024
Q1 		$857K Buy
106,000
+78,200
+281% +$622K ﹤0.01% 3287
2023
Q4 		$235K Buy
27,800
+5,500
+25% +$41.9K ﹤0.01% 4508
2023
Q3 		$157K Sell
22,300
-111,100
-83% -$805K ﹤0.01% 4622
2023
Q2 		$1.05M Buy
133,400
+101,800
+322% +$839K ﹤0.01% 2550
2023
Q1 		$276K Buy
31,600
+19,900
+170% +$161K ﹤0.01% 3940
2022
Q4 		$76K Sell
11,700
-195,700
-94% -$1.3M ﹤0.01% 5387
2022
Q3 		$1.16M Sell
207,400
-412,900
-67% -$2.73M ﹤0.01% 2497
2022
Q2 		$4.2M Buy
620,300
+14,100
+2% +$116K ﹤0.01% 1255
2022
Q1 		$5.53M Buy
606,200
+128,700
+27% +$1.28M 0.01% 1171
2021
Q4 		$5.59M Buy
477,500
+259,600
+119% +$2.89M 0.01% 1142
2021
Q3 		$2.02M Hold
217,900
– – ﹤0.01% 2128
2021
Q2 		$2.06M Buy
217,900
+216,065
+11,775% +$2.02M ﹤0.01% 2119
2021
Q1 		$1.67M Buy
1,835
+1,220
+198% +$11.3K ﹤0.01% 1827
2020
Q4 		$518K Buy
615
+593
+2,695% +$3.87K ﹤0.01% 3378
2020
Q3 		$10K Buy
22
+4
+22% +$15 ﹤0.01% 6805
2020
Q2 		$4K Sell
18
-1
-5% -$3 ﹤0.01% 7077
2020
Q1 		$4K Buy
+19
New +$48 ﹤0.01% 6986

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

Simplex Trading's UMC Position: Q2 2026 in Review

Simplex Trading sold out of United Microelectronic (UMC) in Q2 2026, closing a stake of 51,364 shares — an estimated $878K sold.

Simplex Trading first reported a position in UMC in Q3 2018 and held it in 18 quarters. The position peaked at $2.1M in Q4 2021. 363 funds tracked by Wall St. Rank hold UMC as of Q2 2026.

  • Simplex Trading reported no remaining United Microelectronic position as of Q2 2026 after selling out during the quarter.
  • Simplex Trading sold 51,364 United Microelectronic shares in Q2 2026, an estimated $878K.
  • Simplex Trading first reported a position in United Microelectronic in Q3 2018 and held it in 18 quarters.
  • Simplex Trading's United Microelectronic position peaked at $2.1M in Q4 2021.
  • 363 funds tracked by Wall St. Rank held United Microelectronic as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.