Simplex Trading
STEM icon

Simplex Trading’s Stem STEM Stock Holding History

Simplex Trading’s Portfolio STEM Stock Details STEM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$18K Sell
2,300
-7,200
-76% -$66.8K ﹤0.01% 7201
2026
Q1 		$84K Sell
9,500
-641,000
-99% -$8.61M ﹤0.01% 5297
2025
Q4 		$173K Sell
650,500
-9,000
-1% -$172K ﹤0.01% 4374
2025
Q3 		$11.6M Buy
659,500
+7,600
+1% +$107K 0.01% 874
2025
Q2 		$4.06M Buy
651,900
+620,880
+2,002% +$5.57M ﹤0.01% 1522
2025
Q1 		$217K Buy
31,020
+14,025
+83% +$162K ﹤0.01% 4235
2024
Q4 		$204K Sell
16,995
-3,040
-15% -$26.2K ﹤0.01% 4494
2024
Q3 		$139K Buy
20,035
+14,855
+287% +$234K ﹤0.01% 4897
2024
Q2 		$114K Buy
5,180
+130
+3% +$3.81K ﹤0.01% 5251
2024
Q1 		$221K Sell
5,050
-22,000
-81% -$1.22M ﹤0.01% 4737
2023
Q4 		$2.1M Buy
27,050
+3,595
+15% +$248K ﹤0.01% 2312
2023
Q3 		$1.99M Buy
23,455
+4,780
+26% +$546K ﹤0.01% 2075
2023
Q2 		$2.14M Buy
18,675
+3,730
+25% +$370K ﹤0.01% 1929
2023
Q1 		$1.69M Sell
14,945
-240
-2% -$40.7K ﹤0.01% 2081
2022
Q4 		$2.71M Sell
15,185
-3,855
-20% -$926K ﹤0.01% 1636
2022
Q3 		$5.08M Buy
19,040
+11,320
+147% +$2.9M 0.01% 1197
2022
Q2 		$1.1M Buy
7,720
+2,845
+58% +$473K ﹤0.01% 2506
2022
Q1 		$1.07M Sell
4,875
-2,525
-34% -$588K ﹤0.01% 2833
2021
Q4 		$2.81M Buy
7,400
+120
+2% +$52K ﹤0.01% 1701
2021
Q3 		$5.39M Buy
7,280
+1,040
+17% +$547K 0.01% 1133
2021
Q2 		$4.49M Buy
6,240
+6,188
+11,900% +$3.37M ﹤0.01% 1277
2021
Q1 		$2.77M Buy
52
+6
+13% +$3.85K 0.01% 1286
2020
Q4 		$1.87M Buy
+46
New +$11.6K ﹤0.01% 1833

Other funds holding STEM

Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
TI
Trexquant Investment Stamford, Connecticut $17B AUM 39.66% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
GCP
GSA Capital Partners London, United Kingdom $1.59B AUM 39.81% 1-Year Est. Return
BNP Paribas Financial Markets
BNP Paribas Financial Markets Paris, France $289B AUM 60.46% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

Simplex Trading's STEM Position: Q2 2026 in Review

Simplex Trading opened a new position in Stem (STEM) in Q2 2026: 840 shares worth $6.56K. The stake represents ﹤0.01% of the portfolio and ranks #7991 among its holdings. This is a return to the name: Simplex Trading previously reported a position in STEM as recently as Q1 2023.

Simplex Trading first reported a position in STEM in Q1 2021 and has held it in 5 quarters since. The position peaked at $446K in Q1 2023. 73 funds tracked by Wall St. Rank hold STEM as of Q2 2026.

  • Simplex Trading held 840 shares of Stem worth $6.56K as of Q2 2026.
  • Stem was a new Simplex Trading position in Q2 2026.
  • Stem made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #7991 holding.
  • Simplex Trading first reported a position in Stem in Q1 2021 and has held it in 5 quarters since.
  • Simplex Trading's Stem position peaked at $446K in Q1 2023.
  • 73 funds tracked by Wall St. Rank held Stem as of Q2 2026.

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