# NET POWER INC (NPWRWS)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/NPWRWS/

- Reporting holders: 26
- Reported value: $3.6M
- Held through calls: 8.6%
- Held through puts: 1.8%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [Share Andrew L.](https://holderbook.com/funds/1693672-share-andrew-l/) | $1.5M | 5,342,547 | 0.8% | 13 |
| [LMR Partners LLP](https://holderbook.com/funds/1578621-lmr-partners-llp/) | $494.5K | 1,705,116 | 0.0% | 10 |
| [ZAZOVE ASSOCIATES LLC](https://holderbook.com/funds/1009012-zazove-associates-llc/) | $475.4K | 1,533,692 | 0.0% | 12 |
| [SIMPLEX TRADING, LLC](https://holderbook.com/funds/1488542-simplex-trading-llc/) | $132.3K | 0 | 0.0% | 11 |
| [KENSICO CAPITAL MANAGEMENT CORP](https://holderbook.com/funds/1113000-kensico-capital-management-corp/) | $131.6K | 453,800 | 0.0% | 13 |
| [BOOTHBAY FUND MANAGEMENT, LLC](https://holderbook.com/funds/1549230-boothbay-fund-management-llc/) | $129.2K | 77,370 | 0.0% | 7 |
| [GROUP ONE TRADING LLC](https://holderbook.com/funds/932540-group-one-trading-llc/) | $96.0K | 0 | 0.0% | 7 |
| [IMC-Chicago, LLC](https://holderbook.com/funds/1452861-imc-chicago-llc/) | $80.8K | 0 | 0.0% | 2 |
| [TORONTO DOMINION BANK](https://holderbook.com/funds/947263-toronto-dominion-bank/) | $80.6K | 278,099 | 0.0% | 5 |
| [MILLENNIUM MANAGEMENT LLC](https://holderbook.com/funds/1273087-millennium-management-llc/) | $63.4K | 0 | 0.0% | 13 |
| [Saba Capital Management, L.P.](https://holderbook.com/funds/1510281-saba-capital-management-l-p/) | $56.1K | 180,984 | 0.0% | 8 |
| [COHEN & STEERS, INC.](https://holderbook.com/funds/1284812-cohen-steers-inc/) | $53.0K | 182,834 | 0.0% | 13 |
| [WOLVERINE ASSET MANAGEMENT LLC](https://holderbook.com/funds/1279891-wolverine-asset-management-llc/) | $49.0K | 168,890 | 0.0% | 13 |
| [ARISTEIA CAPITAL, L.L.C.](https://holderbook.com/funds/1080171-aristeia-capital-l-l-c/) | $34.7K | 111,888 | 0.0% | 7 |
| [Caption Management, LLC](https://holderbook.com/funds/1706766-caption-management-llc/) | $33.2K | 114,375 | 0.0% | 4 |
| [Arosa Capital Management LP](https://holderbook.com/funds/1596053-arosa-capital-management-lp/) | $30.8K | 106,249 | 0.0% | 13 |
| [MOORE CAPITAL MANAGEMENT, LP](https://holderbook.com/funds/1448574-moore-capital-management-lp/) | $29.0K | 100,000 | 0.0% | 13 |
| [K2 PRINCIPAL FUND, L.P.](https://holderbook.com/funds/1461790-k2-principal-fund-l-p/) | $13.4K | 46,181 | 0.0% | 7 |
| [Thomas J. Herzfeld Advisors, Inc.](https://holderbook.com/funds/1509510-thomas-j-herzfeld-advisors-inc/) | $9.5K | 32,771 | 0.0% | 13 |
| [Ionic Capital Management LLC](https://holderbook.com/funds/1386462-ionic-capital-management-llc/) | $8.4K | 29,036 | 0.0% | 6 |
| [Teilinger Capital Ltd.](https://holderbook.com/funds/1531879-teilinger-capital-ltd/) | $7.2K | 25,000 | 0.0% | 13 |
| [D. E. Shaw & Co., Inc.](https://holderbook.com/funds/1009207-d-e-shaw-co-inc/) | $4.4K | 15,032 | 0.0% | 13 |
| [Dynamic Advisor Solutions LLC](https://holderbook.com/funds/1599747-dynamic-advisor-solutions-llc/) | $3.0K | 10,400 | 0.0% | 5 |
| [UBS Group AG](https://holderbook.com/funds/1610520-ubs-group-ag/) | $137 | 474 | 0.0% | 3 |
| [NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO](https://holderbook.com/funds/1141802-northwestern-mutual-wealth-management-co/) | $109 | 375 | 0.0% | 13 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 26 | $3.6M |
| Q1 2026 | 28 | $3.2M |
| Q4 2025 | 27 | $6.2M |
| Q3 2025 | 27 | $9.3M |
| Q2 2025 | 27 | $4.7M |
| Q1 2025 | 28 | $3.8M |
| Q4 2024 | 27 | $39.1M |
| Q3 2024 | 29 | $11.5M |
| Q2 2024 | 31 | $26.6M |
| Q1 2024 | 31 | $33.6M |
| Q4 2023 | 32 | $22.7M |
| Q3 2023 | 31 | $43.2M |