NPWR NET Power Inc.
NET Power Inc. (NPWR) Institutional Ownership
What the institutions did with NPWR last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| Share Andrew L. | 15.1M | 30.9% |
| HITE Hedge Asset Management LLC | 2.9M | 5.8% |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2.8M | 5.8% |
| BlackRock, Inc. | 2.4M | 4.9% |
| PEAK6 LLC | 2.0M | 4.1% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.8M | 3.7% |
| LMR Partners LLP | 1.7M | 3.5% |
| Defiance ETFs, LLC | 1.6M | 3.2% |
| Tidal Investments LLC | 1.5M | 3.2% |
| ZAZOVE ASSOCIATES LLC | 1.5M | 3.1% |
| Sourcerock Group LLC | 1.4M | 2.9% |
| COHEN & STEERS, INC. | 1.1M | 2.2% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.0M | 2.1% |
| GSA CAPITAL PARTNERS LLP | 851.3K | 1.7% |
| Argentarii, LLC | 746.8K | 1.5% |
| TWO SIGMA INVESTMENTS, LP | 660.6K | 1.3% |
| STATE STREET CORP | 624.2K | 1.3% |
| UBS Group AG | 611.4K | 1.2% |
| KENSICO CAPITAL MANAGEMENT CORP | 453.8K | 0.9% |
| D. E. Shaw & Co., Inc. | 427.5K | 0.9% |
| TUDOR INVESTMENT CORP ET AL | 397.5K | 0.8% |
| AQR CAPITAL MANAGEMENT LLC | 385.3K | 0.8% |
| RENAISSANCE TECHNOLOGIES LLC | 354.2K | 0.7% |
| BOOTHBAY FUND MANAGEMENT, LLC | 340.7K | 0.7% |
| NORTHERN TRUST CORP | 334.8K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Share Andrew L. | Increased | 9.8M | 15.1M | +5.3M |
| LMR Partners LLP | Increased | 35.9K | 1.7M | +1.7M |
| ZAZOVE ASSOCIATES LLC | New | 0 | 1.5M | +1.5M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Increased | 1.5M | 2.8M | +1.3M |
| Defiance ETFs, LLC | Increased | 533.3K | 1.6M | +1.0M |
| Tidal Investments LLC | Increased | 533.3K | 1.5M | +1.0M |
| GSA CAPITAL PARTNERS LLP | Increased | 186.2K | 851.3K | +665.1K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 682.7K | 37.8K | -644.9K |
| KENSICO CAPITAL MANAGEMENT CORP | New | 0 | 453.8K | +453.8K |
| CenterBook Partners LP | Sold Out | 437.8K | 0 | -437.8K |
| Nuveen, LLC | Reduced | 713.8K | 288.9K | -424.9K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 1.1M | 660.6K | -419.7K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 703.8K | 354.2K | -349.6K |
| TORONTO DOMINION BANK | New | 0 | 278.1K | +278.1K |
| BlackRock, Inc. | Increased | 2.1M | 2.4M | +273.4K |
| UBS Group AG | Increased | 369.9K | 611.4K | +241.6K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 153.5K | 385.3K | +231.8K |
| CITADEL ADVISORS LLC | Sold Out | 219.0K | 0 | -219.0K |
| Caption Management, LLC | Increased | 19.9K | 236.8K | +216.9K |
| D. E. Shaw & Co., Inc. | Increased | 235.4K | 427.5K | +192.1K |
| Saba Capital Management, L.P. | New | 0 | 181.0K | +181.0K |
| COHEN & STEERS, INC. | Increased | 892.1K | 1.1M | +179.6K |
| WOLVERINE ASSET MANAGEMENT LLC | New | 0 | 168.9K | +168.9K |
| Squarepoint Ops LLC | Sold Out | 166.2K | 0 | -166.2K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 1.6M | 1.8M | +158.6K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.