NET POWER INC (NPWR)
Institutional ownership reported to the SEC as of Q2 2026, across 13 quarters.
115
Reporting holders
$64.5M
Reported value
4.9%
Held as options
+7
Holder change
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Share Andrew L. | $16.3M | 9,767,500 | 8.43% | 13q | HELD |
| PEAK6 LLC | $5.7M | 1,985,754 | 0.01% | 7q | HELD |
| HITE Hedge Asset Management LLC | $4.8M | 2,852,670 | 0.26% | 13q | +3.2%+$149.0K |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $4.7M | 2,840,000 | 0.01% | 13q | +84.4%+$2.2M |
| BlackRock, Inc. | $4.0M | 2,416,294 | 0.00% | 8q | +12.8%+$456.5K |
| VANGUARD CAPITAL MANAGEMENT LLC | $3.0M | 1,802,372 | 0.00% | 2q | +9.6%+$264.8K |
| Defiance ETFs, LLC | $2.6M | 1,555,837 | 0.04% | 2q | +191.8%+$1.7M |
| Tidal Investments LLC | $2.6M | 1,546,562 | 0.00% | 4q | +190.0%+$1.7M |
| Sourcerock Group LLC | $2.3M | 1,400,110 | 0.12% | 3q | -6.9%-$173.7K |
| GEODE CAPITAL MANAGEMENT, LLC | $1.7M | 1,006,014 | 0.00% | 12q | +16.9%+$243.3K |
| Argentarii, LLC | $1.2M | 746,799 | 0.36% | 7q | HELD |
| TWO SIGMA INVESTMENTS, LP | $1.1M | 660,570 | 0.00% | 7q | -38.9%-$700.9K |
| STATE STREET CORP | $1.0M | 624,238 | 0.00% | 12q | +1.7%+$17.9K |
| UBS Group AG | $1.0M | 610,961 | 0.00% | 12q | +65.2%+$402.6K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $817.5K | 261,027 | 0.00% | 7q | +52.3%+$280.6K |
| D. E. Shaw & Co., Inc. | $688.9K | 412,502 | 0.00% | 5q | +75.2%+$295.8K |
| TUDOR INVESTMENT CORP ET AL | $663.9K | 397,515 | 0.00% | 3q | -7.8%-$56.2K |
| AQR CAPITAL MANAGEMENT LLC | $643.4K | 385,283 | 0.00% | 5q | +151.0%+$387.1K |
| RENAISSANCE TECHNOLOGIES LLC | $591.5K | 354,206 | 0.00% | 3q | -49.7%-$583.8K |
| NORTHERN TRUST CORP | $559.1K | 334,814 | 0.00% | 12q | +14.7%+$71.5K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $542.1K | 324,611 | 0.00% | 2q | +22.6%+$100.1K |
| Nuveen, LLC | $482.4K | 288,876 | 0.00% | 6q | -59.5%-$709.6K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $481.4K | 288,276 | 0.00% | 12q | +7.0%+$31.3K |
| Sixth Street Partners Management Company, L.P. | $481.4K | 288,276 | 0.00% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $471.7K | 282,441 | 0.00% | 2q | +13.4%+$55.8K |
| MORGAN STANLEY | $452.1K | 270,736 | 0.00% | 13q | +47.3%+$145.2K |
| BOOTHBAY FUND MANAGEMENT, LLC | $439.7K | 263,298 | 0.01% | 3q | -11.0%-$54.5K |
| FEDERATED HERMES, INC. | $414.5K | 248,208 | 0.00% | 5q | +2.7%+$11.0K |
| SHELTON CAPITAL MANAGEMENT | $334.5K | 200,300 | 0.01% | 12q | HELD |
| DIMENSIONAL FUND ADVISORS LP | $272.9K | 163,443 | 0.00% | 8q | +58.5%+$100.7K |
| GOLDMAN SACHS GROUP INC | $252.8K | 151,365 | 0.00% | 11q | -41.9%-$182.4K |
| CITADEL ADVISORS LLC | $252.7K | options only | 0.00% | 11q | OPTIONS |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | $236.9K | 141,882 | 0.00% | 2q | -22.9%-$70.5K |
| Caption Management, LLC | $204.5K | 122,452 | 0.00% | 6q | +516.0%+$171.3K |
| ALLIANCEBERNSTEIN L.P. | $183.6K | 117,680 | 0.00% | 5q | +15.7%+$25.0K |
| SIR Capital Management, L.P. | $183.1K | 109,651 | 0.02% | 9q | +6.3%+$10.8K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | $161.0K | 96,430 | 0.00% | new | NEW |
| MOORE CAPITAL MANAGEMENT, LP | $141.9K | 85,000 | 0.00% | 7q | HELD |
| Bank of New York Mellon Corp | $140.0K | 83,821 | 0.00% | 9q | HELD |
| SIMPLEX TRADING, LLC | $129.6K | 77,604 | 0.00% | new | NEW |
| XTX Topco Ltd | $123.5K | 73,944 | 0.00% | 7q | +511.6%+$103.3K |
| JANE STREET GROUP, LLC | $122.7K | options only | 0.00% | 11q | OPTIONS |
| LPL Financial LLC | $95.3K | 57,074 | 0.00% | 12q | +7.6%+$6.8K |
| DEUTSCHE BANK AG\ | $93.6K | 56,064 | 0.00% | 9q | +3.5%+$3.2K |
| Qube Research & Technologies Ltd | $93.2K | 55,825 | 0.00% | 2q | +52.6%+$32.1K |
| RHUMBLINE ADVISERS | $90.0K | 53,919 | 0.00% | 9q | +9.8%+$8.0K |
| IMC-Chicago, LLC | $69.2K | 41,449 | 0.00% | new | NEW |
| OSAIC HOLDINGS, INC. | $68.1K | 40,785 | 0.00% | 13q | HELD |
| MILLENNIUM MANAGEMENT LLC | $63.2K | 37,844 | 0.00% | 10q | -94.5%-$1.1M |
| WELLS FARGO & COMPANY/MN | $59.1K | 35,383 | 0.00% | 13q | -38.6%-$37.2K |
| Jain Global LLC | $58.1K | 34,819 | 0.00% | new | NEW |
| Russell Investments Group, Ltd. | $55.9K | 33,503 | 0.00% | 6q | +1091.4%+$51.3K |
| MERCER GLOBAL ADVISORS INC /ADV | $53.6K | 32,094 | 0.00% | new | NEW |
| SIG BROKERAGE, LP | $53.3K | 31,942 | 0.00% | 5q | HELD |
| CANADA PENSION PLAN INVESTMENT BOARD | $49.6K | 29,700 | 0.00% | new | NEW |
| LMR Partners LLP | $48.1K | 28,794 | 0.00% | 3q | -19.7%-$11.8K |
| Quadrature Capital Ltd | $45.0K | 26,934 | 0.00% | new | NEW |
| BANK OF AMERICA CORP /DE/ | $45.0K | 26,930 | 0.00% | 13q | -23.2%-$13.6K |
| TWO SIGMA SECURITIES, LLC | $36.8K | 22,060 | 0.00% | new | NEW |
| Invesco Ltd. | $36.8K | 22,043 | 0.00% | 5q | +95.3%+$18.0K |
| CAPTRUST FINANCIAL ADVISORS | $33.1K | 19,846 | 0.00% | 3q | +37.6%+$9.1K |
| CITIGROUP INC | $32.8K | 19,652 | 0.00% | 10q | +1139.1%+$30.2K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $32.5K | 19,454 | 0.00% | 8q | +28.7%+$7.2K |
| Polymer Capital Management (US) LLC | $31.3K | 18,731 | 0.00% | 3q | -63.2%-$53.8K |
| GROUP ONE TRADING LLC | $31.2K | 18,672 | 0.00% | 5q | +26.4%+$6.5K |
| Mariner, LLC | $31.0K | 18,552 | 0.00% | new | NEW |
| JPMORGAN CHASE & CO | $30.4K | 18,211 | 0.00% | 12q | +7.7%+$2.2K |
| INTEGRITY ALLIANCE, LLC. | $29.1K | 17,400 | 0.00% | 3q | HELD |
| Kapstone Financial Advisors LLC | $29.1K | 17,395 | 0.01% | 7q | HELD |
| Legacy Advisors, LLC | $27.4K | 16,413 | 0.00% | 4q | HELD |
| Engineers Gate Manager LP | $27.2K | 16,261 | 0.00% | 8q | -47.5%-$24.5K |
| IEQ CAPITAL, LLC | $27.1K | 16,207 | 0.00% | new | NEW |
| Point72 Asset Management, L.P. | $25.6K | 15,340 | 0.00% | 3q | -55.0%-$31.3K |
| SEI INVESTMENTS CO | $21.5K | 12,854 | 0.00% | 6q | HELD |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $21.1K | 13,528 | 0.00% | new | NEW |
| ROYAL BANK OF CANADA | $21.0K | 12,831 | 0.00% | 13q | +187.2%+$13.7K |
| Creative Planning | $20.4K | 12,217 | 0.00% | new | NEW |
| Private Advisor Group, LLC | $20.4K | 12,200 | 0.00% | 2q | HELD |
| Vanguard Global Advisers, LLC | $20.3K | 12,172 | 0.00% | 2q | HELD |
| Aigen Investment Management, LP | $19.7K | 11,812 | 0.01% | new | NEW |
| Focus Partners Wealth | $18.1K | 10,863 | 0.00% | new | NEW |
| INTECH INVESTMENT MANAGEMENT LLC | $18.0K | 10,786 | 0.00% | 7q | HELD |
| TRUIST FINANCIAL CORP | $16.7K | 10,000 | 0.00% | 13q | HELD |
| BARCLAYS PLC | $14.9K | 8,948 | 0.00% | 11q | +1.2% |
| Arax Advisory Partners | $14.9K | 8,943 | 0.00% | 2q | +7290.9%+$14.7K |
| Integrated Wealth Concepts LLC | $12.3K | 7,372 | 0.00% | new | NEW |
| Tower Research Capital LLC (TRC) | $12.2K | 7,332 | 0.00% | 11q | -31.0%-$5.5K |
| LANARK FINANCIAL, INC. | $10.6K | 6,340 | 0.00% | 12q | HELD |
| NEW YORK STATE COMMON RETIREMENT FUND | $8.5K | 5,100 | 0.00% | 9q | HELD |
| FIFTH THIRD BANCORP | $8.3K | 5,000 | 0.00% | 13q | HELD |
| Police & Firemen's Retirement System of New Jersey | $7.1K | 4,252 | 0.00% | 7q | HELD |
| Legal & General Group Plc | $5.2K | 3,095 | 0.00% | 9q | HELD |
| Quarry LP | $3.8K | 2,257 | 0.00% | new | NEW |
| Ameritas Investment Partners, Inc. | $3.5K | 2,072 | 0.00% | 9q | HELD |
| FMR LLC | $3.3K | 1,951 | 0.00% | 9q | -4.5% |
| JONES FINANCIAL COMPANIES LLLP | $3.0K | 1,800 | 0.00% | 8q | -41.5%-$2.1K |
| EverSource Wealth Advisors, LLC | $2.8K | 1,692 | 0.00% | 6q | +82.3%+$1.3K |
| Allworth Financial LP | $2.6K | 1,545 | 0.00% | 4q | +375.4%+$2.0K |
| Blue Trust, Inc. | $2.3K | 1,390 | 0.00% | 5q | HELD |
| McMillan Office, Inc. | $1.7K | 1,000 | 0.00% | 3q | HELD |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-17 | 13D/A | 8 RIVERS CAPITAL, LLCwith 3 co-filers | 17.9% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 115 | $64.5M | 36,731,575 | 18 | 45 | 27 | 4.9% |
| Q1 2026 | 108 | $54.4M | 34,012,925 | 12 | 37 | 29 | 2.3% |
| Q4 2025 | 109 | $77.6M | 33,623,253 | 25 | 22 | 38 | 1.2% |
| Q3 2025 | 92 | $105.9M | 31,514,270 | 13 | 29 | 28 | 10.4% |
| Q2 2025 | 88 | $80.4M | 28,998,645 | 17 | 34 | 21 | 10.9% |
| Q1 2025 | 97 | $80.0M | 29,666,477 | 22 | 35 | 22 | 2.5% |
| Q4 2024 | 101 | $337.0M | 30,260,282 | 23 | 36 | 18 | 4.9% |
| Q3 2024 | 82 | $206.5M | 29,396,778 | 14 | 29 | 18 | 0.2% |
| Q2 2024 | 85 | $281.9M | 28,549,036 | 29 | 23 | 17 | 0.4% |
| Q1 2024 | 68 | $296.2M | 25,955,537 | 17 | 17 | 18 | 0.2% |
| Q4 2023 | 64 | $329.9M | 32,629,793 | 23 | 19 | 11 | 0.1% |
| Q3 2023 | 52 | $473.0M | 31,326,707 | 21 | 12 | 10 | 0.0% |
| Q2 2023 | 37 | $131.9M | 10,149,593 | 36 | 0 | 0 | 0.0% |