Net Power Inc.

NPWR

Exchange: NYSE
Industry: Electrical Industrial Apparatus
SEC CIK: 0001845437

SEC filings (opens in a new tab)

In the last 90 days, Net Power Inc. insiders filed 0 open-market purchases and 7 sales; 120 institutions reported holding it in 13F filings for Q2 2026, worth $64.1M in total; no superinvestor holds it.

Other share classesNPWR.WT

Q1 2024 vs. Q4 2023

How the institutions holding Net Power Inc. changed between Q4 2023 and Q1 2024.

All holders in Q1 2024 All holders in Q4 2023

13F holders of NPWR: Q4 2023 compared with Q1 2024
Measure	Q4 2023	Of which not filed for Q1 2024	Q1 2024	Change
Holders	70	1	77	+8
Shares	33.4M	2.99M	27.0M	−3.43M (−11.3%)
Value	$337.7M	$30.2M	$307.6M	+$137.4K (0.0%)

1 institution that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so the changes leave them out.

New holders (23)

Institutions that held Net Power Inc. at the end of Q1 2024 but not at the end of Q4 2023.

Institutions new to NPWR in Q1 2024
Institution	Shares	Value	% of portfolio
DME Capital Management, LPSuperinvestorGreenlight Capital	1,959,280	$22.3M	1.02%
Summit Partners Public Asset Management, LLC	975,000	$11.1M	0.53%
S&CO Inc	201,100	$2.29M	0.16%
Marshall Wace, LLP	178,560	$2.03M	0.00%
J. Goldman & Co LP	98,563	$1.12M	0.05%
Brevan Howard Capital Management LP	68,230	$777.1K	0.07%
Millennium Management LLC	51,071	$581.7K	0.00%
Covalis Capital LLP	49,430	$563.0K	0.07%
Citigroup Inc	49,298	$561.5K	0.00%
Marathon Trading Investment Management LLC	45,701	$520.5K	0.21%
ExodusPoint Capital Management, LP	41,318	$471.0K	0.01%
Susquehanna International Group, LLP	21,612	$246.2K	0.00%
Omers Administration Corp	17,600	$200.5K	0.00%
Balyasny Asset Management LLC	16,855	$192.0K	0.00%
K2 Principal Fund, L.P.	13,011	$148.2K	0.04%
Williams Jones Wealth Management, LLC.	11,250	$128.1K	0.00%
CTC Alternative Strategies, Ltd.	10,600	$120.7K	0.08%
CI Private Wealth, LLC	10,000	$113.9K	0.00%
Simplex Trading, LLC	8,587	$97.0K	0.00%
Pickering Energy Partners LP	3,100	$35.3K	0.39%
Group One Trading, L.P.	1,000	$11.4K	0.00%
Accordant Advisory Group Inc	200	$2.28K	0.00%
CWM, LLC	16	$0	0.00%

Sold out (15)

Institutions that held Net Power Inc. at the end of Q4 2023 and filed for Q1 2024 without it.

Institutions that sold out of NPWR in Q1 2024
Institution	Shares, Q4 2023	Value, Q4 2023
Clear Sky Advisers, LLC	188,162	$1.90M
Teilinger Capital Ltd.	100,000	$1.01M
Waldron Private Wealth LLC	39,714	$401.1K
Swiss National Bank	27,200	$274.7K
Jump Financial, LLC	19,512	$197.1K
Boothbay Fund Management, LLC	16,961	$171.3K
Bank of New York Mellon Corp	14,257	$144.0K
California State Teachers Retirement System	12,266	$123.9K
Credit Suisse AG	11,936	$120.6K
Y-Intercept (Hong Kong) Ltd	10,992	$111.0K
Virtu Financial LLC	10,459	$106.0K
Atom Investors LP	10,314	$104.2K
Belvedere Trading LLC	4,216	$42.6K
Zurcher Kantonalbank (Zurich Cantonalbank)	3,034	$30.6K
Tennessee Valley Asset Management Partners	1,593	$16.1K

Not filed for Q1 2024 yet (1)

Institutions that held Net Power Inc. at the end of Q4 2023 and haven't filed a 13F for Q1 2024. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding NPWR in Q4 2023 that haven't filed for Q1 2024
Institution	Shares, Q4 2023	Value, Q4 2023
Greenlight Capital Inc	2,992,110	$30.2M