NET Power Inc. (NPWR) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

77,883,000Shares Outstanding

35,444,392Shares held by institutions

$57,419,915Value of institutional holdings

45.51%Institutional ownership %

11.12%Shares Changed QoQ

111No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

NET Power Inc. (NYSE:NPWR) appears in 111 institutional 13F filings for the quarter ending December 2025.

These investors collectively held 43.4% of NET Power's outstanding shares in December 2025, up from 42.1% in September 2025.
They increased total shares held in NPWR by 6.2% quarter over quarter, and investors in NET Power decreased 0.89% from a year ago.
Activity in NPWR broke down as 52 buyers, 38 sellers, and 21 unchanged among 111 total holders.
The aggregate institutional position in NET Power amounted to 33.79Mn shares as of December 2025, up by 1.97Mn shares quarter on quarter, and up 1.88Mn shares year over year.
As of December 31, 2025, Share Andrew L. held the largest stake in NET Power with 9.77Mn shares, accounting for 12.54% of total shares outstanding.
Top purchasers of NPWR stock for the quarter ending December 2025 included PEAK6 LLC (2.69Mn), Sourcerock Group LLC (1.5Mn), Empowered Funds, LLC (666.26K), CenterBook Partners LP (599.72K), JANE STREET GROUP, LLC (451.76K).
Top sellers of NPWR stock for the quarter ending December 2025 included ADAGE CAPITAL PARTNERS GP, L.L.C. (969.87K), Morgan Stanley (632.67K), Jpmorgan Chase & Co (393.05K), UBS Group AG (365.96K), Bank Of America Corp /De/ (281.54K).
NET Power's 10 largest shareholders as of December 2025 include Share Andrew L. (9.77Mn), PEAK6 LLC (2.69Mn), MILLENNIUM MANAGEMENT LLC (2.28Mn), VANGUARD GROUP INC (2.02Mn), BlackRock, Inc. (2.0Mn), CenterBook Partners LP (1.85Mn), ADAGE CAPITAL PARTNERS GP, L.L.C. (1.54Mn), Sourcerock Group LLC (1.5Mn), Cohen & Steers, Inc. (944.59K), Empowered Funds, LLC (889.47K) per Business Quant data.

111 Institutional Holders

35,444,392 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Share Andrew L.	31 Dec, 2025	9,767,500	-170,000	-1.71%	$22,269,900.00
PEAK6 LLC	31 Dec, 2025	2,694,078	2,694,078	0.00%	$6,142,498.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	2,276,592	-88,654	-3.75%	$5,190,630.00
VANGUARD GROUP INC	31 Dec, 2025	2,017,263	231,669	12.97%	$4,599,360.00
BlackRock, Inc.	31 Dec, 2025	1,995,226	-52,554	-2.57%	$4,549,115.00
CenterBook Partners LP	31 Dec, 2025	1,848,073	599,725	48.04%	$4,213,606.00
ADAGE CAPITAL PARTNERS GP, L.L.C.	31 Dec, 2025	1,540,000	-969,868	-38.64%	$3,511,200.00
Sourcerock Group LLC	31 Dec, 2025	1,496,482	1,496,482	0.00%	$3,411,979.00
Cohen & Steers, Inc.	31 Dec, 2025	944,587	-6,124	-0.64%	$2,154.00
Empowered Funds, LLC	31 Dec, 2025	889,468	666,264	298.50%	$2,027,988.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	831,547	-42,972	-4.91%	$1,896,235.00
HITE Hedge Asset Management LLC	31 Dec, 2025	749,091	-227,337	-23.28%	$1,707,927.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	728,459	-93,334	-11.36%	$1,660,887.00
JANE STREET GROUP, LLC	31 Dec, 2025	720,560	451,765	168.07%	$1,642,877.00
Nuveen, LLC	31 Dec, 2025	702,391	0	0.00%	$1,601,451.00
Goldman Sachs Group Inc	31 Dec, 2025	607,324	328,899	118.13%	$1,384,698.00
State Street Corp	31 Dec, 2025	603,694	9,001	1.51%	$1,376,422.00
Morgan Stanley	31 Dec, 2025	303,697	-632,671	-67.57%	$692,428.00
BOOTHBAY FUND MANAGEMENT, LLC	31 Dec, 2025	300,545	300,545	0.00%	$685,243.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	274,327	-242,181	-46.89%	$625,465.00

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