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
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 $5.72T AUM 30.48% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
Man Group
Man Group London, United Kingdom $55.1B AUM 24.23% 1-Year Est. Return
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $89.9B AUM 20.22% 1-Year Est. Return

Simplex Trading's UMC Position: Q1 2026 in Review

Simplex Trading opened a new position in United Microelectronic (UMC) in Q1 2026: 51,364 shares worth $461K. The stake represents ﹤0.01% of the portfolio and ranks #3357 among its holdings. This is a return to the name: Simplex Trading previously reported a position in UMC as recently as Q3 2025.

Simplex Trading first reported a position in UMC in Q3 2018 and has held it in 18 quarters since. The position peaked at $2.1M in Q4 2021. 316 funds tracked by Wall St. Rank hold UMC as of Q1 2026.

  • Simplex Trading held 51,364 shares of United Microelectronic worth $461K as of Q1 2026.
  • United Microelectronic was a new Simplex Trading position in Q1 2026.
  • United Microelectronic made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #3357 holding.
  • Simplex Trading first reported a position in United Microelectronic in Q3 2018 and has held it in 18 quarters since.
  • Simplex Trading's United Microelectronic position peaked at $2.1M in Q4 2021.
  • 316 funds tracked by Wall St. Rank held United Microelectronic as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.