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 		$1.11M 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 $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.