Jim Simons
NPWR icon

Jim Simons’s NET Power NPWR Stock Holding History

Jim Simons’s Portfolio NPWR Stock Details NPWR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$592K Sell
354,206
-349,594
-50% -$633K ﹤0.01% 2542
2026
Q1 		$1.1M Buy
703,800
+609,200
+644% +$1.3M ﹤0.01% 2230
2025
Q4 		$216K Buy
+94,600
New +$296K ﹤0.01% 2868

Other funds holding NPWR

ALS
Andrew L. Share $193M AUM 1.47% 1-Year Est. Return
HITE Hedge Asset Management
HITE Hedge Asset Management Braintree, Massachusetts $1.83B AUM 34.36% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
PEAK6
PEAK6 Chicago, Illinois $48.6B AUM 40.56% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Defiance ETFs
Defiance ETFs New York $7.37B AUM
Tidal Investments
Tidal Investments Milwaukee, Wisconsin $57.8B AUM 72.54% 1-Year Est. Return
Sourcerock Group
Sourcerock Group Denver, Colorado $1.92B AUM 45.54% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Jim Simons's NPWR Position: Q2 2026 in Review

Jim Simons reduced its NET Power (NPWR) stake by 50% in Q2 2026, selling an estimated $633K and leaving 354,206 shares worth $592K. The position accounts for ﹤0.01% of the portfolio, ranked #2542.

Jim Simons first reported a position in NPWR in Q4 2025 and has held it in 3 quarters since. The position peaked at $1.1M in Q1 2026. 120 funds tracked by Wall St. Rank hold NPWR as of Q2 2026.

  • Jim Simons held 354,206 shares of NET Power worth $592K as of Q2 2026.
  • Jim Simons sold 349,594 NET Power shares in Q2 2026, an estimated $633K.
  • NET Power made up ﹤0.01% of Jim Simons's portfolio in Q2 2026, its #2542 holding.
  • Jim Simons first reported a position in NET Power in Q4 2025 and has held it in 3 quarters since.
  • Jim Simons's NET Power position peaked at $1.1M in Q1 2026.
  • 120 funds tracked by Wall St. Rank held NET Power as of Q2 2026.

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