Jim Simons
STEM icon

Jim Simons’s Stem STEM Stock Holding History

Jim Simons’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 		$519K Buy
66,482
+7,907
+13% +$73.3K ﹤0.01% 2597
2026
Q1 		$518K Buy
58,575
+47,375
+423% +$636K ﹤0.01% 2587
2025
Q4 		$169K Buy
+11,200
New +$215K ﹤0.01% 2912
2022
Q3 		– Sell
-69,575
Closed -$10M – 4391
2022
Q2 		$10M Sell
69,575
-68,505
-50% -$11.4M 0.01% 1112
2022
Q1 		$30.4M Buy
+138,080
New +$32.1M 0.04% 530
2021
Q4 		– Sell
-24,970
Closed -$11.9M – 4212
2021
Q3 		$11.9M Buy
+24,970
New +$13.1M 0.02% 926

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
Trexquant Investment
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
GSA Capital Partners
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
Bridgeway Capital Management
Bridgeway Capital Management Houston, Texas $5.69B AUM 60.64% 1-Year Est. Return

Jim Simons's STEM Position: Q2 2026 in Review

Jim Simons increased its Stem (STEM) stake by 13% in Q2 2026, buying an estimated $73.3K and bringing the position to 66,482 shares worth $519K. The position accounts for ﹤0.01% of the portfolio, ranked #2597.

Jim Simons first reported a position in STEM in Q3 2021 and has held it in 6 quarters since. The position peaked at $30.4M in Q1 2022. 72 funds tracked by Wall St. Rank hold STEM as of Q2 2026.

  • Jim Simons held 66,482 shares of Stem worth $519K as of Q2 2026.
  • Jim Simons bought 7,907 Stem shares in Q2 2026, an estimated $73.3K.
  • Stem made up ﹤0.01% of Jim Simons's portfolio in Q2 2026, its #2597 holding.
  • Jim Simons first reported a position in Stem in Q3 2021 and has held it in 6 quarters since.
  • Jim Simons's Stem position peaked at $30.4M in Q1 2022.
  • 72 funds tracked by Wall St. Rank held Stem as of Q2 2026.

Based on Renaissance Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.