NPWR NET Power Inc.

NYSE
$1.75

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.

Managers compared
144
filed both this quarter and last
Managers holding
134
+23 on the quarter
Buyers
86
33 opened new
Sellers
37
10 sold out entirely
Buyer share
69.9%
of managers who traded it
Breadth
+39.8
net buyers, as a share of those trading

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.

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Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest 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
Empowered Funds, LLC Sold Out 155.0K 0 -155.0K
GEODE CAPITAL MANAGEMENT, LLC Increased 860.4K 1.0M +145.6K
ARISTEIA CAPITAL, L.L.C. New 0 111.9K +111.9K
GOLDMAN SACHS GROUP INC Reduced 260.6K 151.4K -109.2K
Arosa Capital Management LP New 0 106.2K +106.2K
Sourcerock Group LLC Reduced 1.5M 1.4M -104.0K
MOORE CAPITAL MANAGEMENT, LP Increased 85.0K 185.0K +100.0K
LOS ANGELES CAPITAL MANAGEMENT LLC New 0 96.4K +96.4K
SUSQUEHANNA INTERNATIONAL GROUP, LLP Increased 171.4K 261.0K +89.6K
HITE Hedge Asset Management LLC Increased 2.8M 2.9M +89.2K
MORGAN STANLEY Increased 183.8K 270.7K +86.9K
SIMPLEX TRADING, LLC New 0 77.6K +77.6K
XTX Topco Ltd Increased 12.1K 73.9K +61.9K
HRT FINANCIAL LP New 0 60.6K +60.6K
DIMENSIONAL FUND ADVISORS LP Increased 103.1K 163.4K +60.3K
VANGUARD PORTFOLIO MANAGEMENT LLC Increased 264.7K 324.6K +59.9K
JANE STREET GROUP, LLC Sold Out 52.5K 0 -52.5K
K2 PRINCIPAL FUND, L.P. New 0 46.2K +46.2K
BOOTHBAY FUND MANAGEMENT, LLC Increased 296.0K 340.7K +44.7K
NORTHERN TRUST CORP Increased 292.0K 334.8K +42.8K
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC Reduced 184.1K 141.9K -42.2K
IMC-Chicago, LLC New 0 41.4K +41.4K
Jain Global LLC New 0 34.8K +34.8K
TUDOR INVESTMENT CORP ET AL Reduced 431.2K 397.5K -33.6K
VANGUARD FIDUCIARY TRUST CO Increased 249.0K 282.4K +33.4K
Thomas J. Herzfeld Advisors, Inc. New 0 32.8K +32.8K
Polymer Capital Management (US) LLC Reduced 50.9K 18.7K -32.2K
Russell Investments Group, Ltd. Increased 2.8K 33.5K +30.7K
CANADA PENSION PLAN INVESTMENT BOARD New 0 29.7K +29.7K
Ionic Capital Management LLC New 0 29.0K +29.0K
Quadrature Capital Ltd New 0 26.9K +26.9K
Family Manage LLC Sold Out 26.2K 0 -26.2K
Virtu Financial LLC New 0 26.0K +26.0K
Teilinger Capital Ltd. New 0 25.0K +25.0K
Cambridge Investment Research Advisors, Inc. New 0 22.7K +22.7K

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.