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 		$19.4M Buy
713,900
+575,900
+417% +$9.84M 0.01% 478
2026
Q1 		$1.24M Buy
+138,000
New +$1.35M ﹤0.01% 2282
2025
Q4 		– Sell
-49,600
Closed -$375K – 10143
2025
Q3 		$375K Buy
49,600
+12,200
+33% +$86.5K ﹤0.01% 4189
2025
Q2 		$286K Sell
37,400
-9,100
-20% -$67.5K ﹤0.01% 4126
2025
Q1 		$332K Buy
46,500
+9,300
+25% +$59.2K ﹤0.01% 3834
2024
Q4 		$241K Buy
37,200
+2,500
+7% +$17.9K ﹤0.01% 4327
2024
Q3 		$292K Sell
34,700
-63,000
-64% -$527K ﹤0.01% 4160
2024
Q2 		$855K Sell
97,700
-22,400
-19% -$185K ﹤0.01% 3084
2024
Q1 		$971K Buy
120,100
+14,200
+13% +$113K ﹤0.01% 3153
2023
Q4 		$895K Sell
105,900
-115,600
-52% -$881K ﹤0.01% 3100
2023
Q3 		$1.56M Buy
221,500
+9,800
+5% +$71K ﹤0.01% 2293
2023
Q2 		$1.67M Sell
211,700
-50,900
-19% -$419K ﹤0.01% 2126
2023
Q1 		$2.3M Sell
262,600
-95,600
-27% -$775K ﹤0.01% 1820
2022
Q4 		$2.34M Sell
358,200
-222,300
-38% -$1.47M ﹤0.01% 1748
2022
Q3 		$3.23M Buy
580,500
+380,700
+191% +$2.51M ﹤0.01% 1537
2022
Q2 		$1.35M Sell
199,800
-36,800
-16% -$302K ﹤0.01% 2285
2022
Q1 		$2.16M Buy
236,600
+153,600
+185% +$1.52M ﹤0.01% 2033
2021
Q4 		$971K Sell
83,000
-112,100
-57% -$1.25M ﹤0.01% 2890
2021
Q3 		$1.81M Buy
195,100
+5,500
+3% +$59K ﹤0.01% 2282
2021
Q2 		$1.79M Buy
189,600
+188,329
+14,817% +$1.76M ﹤0.01% 2309
2021
Q1 		$1.16M Buy
1,271
+25
+2% +$231 ﹤0.01% 2233
2020
Q4 		$1.05M Buy
1,246
+1,125
+930% +$7.34K ﹤0.01% 2490
2020
Q3 		$57K Buy
+121
New +$449 ﹤0.01% 5490
2020
Q1 		– Sell
-132
Closed -$35K – 8320
2019
Q4 		$35K Buy
+132
New +$319 ﹤0.01% 5530

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.