Ken Griffin
NPWR icon

Ken Griffin’s NET Power NPWR Stock Holding History

Ken Griffin’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
Q1 		$342K Buy
+218,981
New +$467K ﹤0.01% 10170
2025
Q4 		– Sell
-73,044
Closed -$228K – 13631
2025
Q3 		$220K Buy
+73,044
New +$195K ﹤0.01% 11066
2025
Q2 		– Sell
-421,722
Closed -$886K – 14241
2025
Q1 		$1.11M Sell
421,722
-222,930
-35% -$1.57M ﹤0.01% 6733
2024
Q4 		$6.83M Buy
644,652
+327,431
+103% +$3.21M ﹤0.01% 3482
2024
Q3 		$2.22M Buy
317,221
+87,048
+38% +$732K ﹤0.01% 5330
2024
Q2 		$2.26M Buy
230,173
+209,754
+1,027% +$2.23M ﹤0.01% 5085
2024
Q1 		$233K Buy
20,419
+18,722
+1,103% +$169K ﹤0.01% 10013
2023
Q4 		$17.1K Buy
+1,697
New +$20.4K ﹤0.01% 12758
2022
Q2 		– Sell
-871,178
Closed -$8.59M – 13709
2022
Q1 		$8.59M Sell
871,178
-3,822
-0.4% -$37.7K ﹤0.01% 3212
2021
Q4 		$8.75M Sell
875,000
-16,493
-2% -$165K ﹤0.01% 3293
2021
Q3 		$8.84M Buy
+891,493
New +$8.75M ﹤0.01% 3285

Other funds holding NPWR

ALS
Andrew L. Share $193M AUM 1.47% 1-Year Est. Return
HHAM
HITE Hedge Asset Management Braintree, Massachusetts $1.77B AUM 38.67% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
PEAK6
PEAK6 Chicago, Illinois $42.6B AUM 66.24% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return
SG
Sourcerock Group Denver, Colorado $2.48B AUM 72.25% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Cohen & Steers
Cohen & Steers New York $57.6B AUM 8.03% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Ken Griffin's NPWR Position: Q1 2026 in Review

Ken Griffin opened a new position in NET Power (NPWR) in Q1 2026: 218,981 shares worth $342K. The stake represents ﹤0.01% of the portfolio and ranks #10170 among its holdings. This is a return to the name: Ken Griffin previously reported a position in NPWR as recently as Q3 2025.

Ken Griffin first reported a position in NPWR in Q3 2021 and has held it in 11 quarters since. The position peaked at $8.84M in Q3 2021. 113 funds tracked by Wall St. Rank hold NPWR as of Q1 2026.

  • Ken Griffin held 218,981 shares of NET Power worth $342K as of Q1 2026.
  • NET Power was a new Ken Griffin position in Q1 2026.
  • NET Power made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #10170 holding.
  • Ken Griffin first reported a position in NET Power in Q3 2021 and has held it in 11 quarters since.
  • Ken Griffin's NET Power position peaked at $8.84M in Q3 2021.
  • 113 funds tracked by Wall St. Rank held NET Power as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.