Net Power Inc.
NPWR- Exchange
- NYSE
- Industry
- Electrical Industrial Apparatus
- SEC CIK
- 0001845437
In the last 90 days, Net Power Inc. insiders filed 0 open-market purchases and 7 sales; 120 institutions reported holding it in 13F filings for Q2 2026, worth $64.1M in total; no superinvestor holds it.
Other share classesNPWR.WT
13F holders, Q1 2026
Institutional positions in Net Power Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 113
- 0 vs. Q4 2025
- Shares held
- 35.2M
- +3.87M (+12.3%) vs. Q4 2025
- Total value
- $55.0M
- −$16.5M (−23.0%) vs. Q4 2025
- New holders
- 18
- 39 more added
- Sold out
- 18
- 31 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting NPWR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 120 | $64.1M |
| Q1 2026 | 113 | $55.0M |
| Q4 2025 | 114 | $76.1M |
| Q3 2025 | 100 | $97.7M |
| Q2 2025 | 94 | $74.6M |
| Q1 2025 | 108 | $81.4M |
| Q4 2024 | 113 | $335.8M |
| Q3 2024 | 89 | $215.2M |
| Q2 2024 | 93 | $292.4M |
| Q1 2024 | 77 | $307.6M |
| Q4 2023 | 70 | $337.7M |
| Q3 2023 | 58 | $486.7M |
| Q2 2023 | 42 | $238.5M |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Net Power Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Renaissance Technologies LLC | 703,800 | $1.10M | 0.00% | +609,200+644.0% | Added |
| Nuveen, LLC | 713,760 | $1.11M | 0.00% | +11,369+1.6% | Added |
| Argentarii, LLC | 748,649 | $1.17M | 0.41% | +485,142+184.1% | Added |
| Geode Capital Management, LLC | 860,386 | $1.34M | 0.00% | +28,839+3.5% | Added |
| Cohen & Steers, Inc. | 892,140 | $1.39M | 0.00% | −52,447−5.6% | Reduced |
| Two Sigma Investments, LP | 1,080,281 | $1.69M | 0.00% | +351,822+48.3% | Added |
| Sourcerock Group LLC | 1,504,126 | $2.35M | 0.10% | +7,644+0.5% | Added |
| Adage Capital Partners GP, L.L.C. | 1,540,000 | $2.40M | 0.00% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 1,643,795 | $2.56M | 0.00% | +1,643,795 | New |
| PEAK6 LLC | 1,988,215 | $3.10M | 0.09% | +641,176+47.6% | Added |
| BlackRock, Inc. | 2,142,916 | $3.34M | 0.00% | +147,690+7.4% | Added |
| HITE Hedge Asset Management LLC | 2,763,424 | $4.31M | 0.24% | +2,014,333+268.9% | Added |
| Share Andrew L. | 9,767,500 | $15.2M | 7.11% | 00.0% | Unchanged |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −274,327−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −102,400−100.0% | Sold out |
| Worth Venture Partners, LLC | 0 | $0 | 0.00% | −80,250−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −60,215−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −59,786−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −55,094−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −30,321−100.0% | Sold out |
| Kovitz Investment Group Partners, LLC | 0 | $0 | 0.00% | −26,380−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −25,029−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −21,454−100.0% | Sold out |
| Thompson Davis & Co., Inc. | 0 | $0 | 0.00% | −18,111−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −11,179−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −6,275−100.0% | Sold out |
| Strive Financial Group ,LLC | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| Eq Wealth Advisors, LLC | 0 | $0 | 0.00% | −2,786−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −988−100.0% | Sold out |
| GAMMA Investing LLC | 0 | $0 | 0.00% | −309−100.0% | Sold out |
| Private Wealth Management Group, LLC | 0 | $0 | 0.00% | −50−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |