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DaveManuel.com · Institutional Ownership · Who Owns It

NET POWER INC (NPWR)

Institutional ownership reported to the SEC as of Q2 2026, across 14 quarters.

122
Reporting holders
$67.3M
Reported value
4.4%
Calls
0.3%
Puts
+9
Holder change

Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.

Holders

Download these holders as CSV

FilerValueShares Their book Held Change
Share Andrew L.$16.3M9,767,5008.43%13qHELD
PEAK6 LLC$5.7M
incl. $2.4M options CALL
1,985,7540.01%7qHELD
HITE Hedge Asset Management LLC$4.8M2,852,6700.26%13q+3.2%+$149.0K
ADAGE CAPITAL PARTNERS GP, L.L.C.$4.7M2,840,0000.01%13q+84.4%+$2.2M
BlackRock, Inc.$4.0M2,416,2940.00%8q+12.8%+$456.5K
VANGUARD CAPITAL MANAGEMENT LLC$3.0M1,802,3720.00%2q+9.6%+$264.8K
Defiance ETFs, LLC$2.6M1,555,8370.04%2q+191.8%+$1.7M
Tidal Investments LLC$2.6M1,546,5620.00%4q+190.0%+$1.7M
Sourcerock Group LLC$2.3M1,400,1100.12%3q-6.9%-$173.7K
GEODE CAPITAL MANAGEMENT, LLC$1.7M1,006,0140.00%12q+16.9%+$243.3K
COHEN & STEERS, INC.$1.5M888,9540.00%13qHELD
GSA CAPITAL PARTNERS LLP$1.4M851,2960.09%2q+357.1%+$1.1M
Argentarii, LLC$1.2M746,7990.36%7qHELD
TWO SIGMA INVESTMENTS, LP$1.1M660,5700.00%7q-38.9%-$700.9K
STATE STREET CORP$1.0M624,2380.00%12q+1.7%+$17.9K
UBS Group AG$1.0M610,9610.00%12q+65.2%+$402.6K
SUSQUEHANNA INTERNATIONAL GROUP, LLP$817.5K
incl. $381.6K options CALL+PUT
261,0270.00%7q+52.3%+$280.6K
D. E. Shaw & Co., Inc.$688.9K412,5020.00%5q+75.2%+$295.8K
TUDOR INVESTMENT CORP ET AL$663.9K397,5150.00%3q-7.8%-$56.2K
AQR CAPITAL MANAGEMENT LLC$643.4K385,2830.00%5q+151.0%+$387.1K
RENAISSANCE TECHNOLOGIES LLC$591.5K354,2060.00%3q-49.7%-$583.8K
NORTHERN TRUST CORP$559.1K334,8140.00%12q+14.7%+$71.5K
VANGUARD PORTFOLIO MANAGEMENT LLC$542.1K324,6110.00%2q+22.6%+$100.1K
Nuveen, LLC$482.4K288,8760.00%6q-59.5%-$709.6K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC$481.4K288,2760.00%12q+7.0%+$31.3K
VANGUARD FIDUCIARY TRUST CO$471.7K282,4410.00%2q+13.4%+$55.8K
MORGAN STANLEY$452.1K270,7360.00%13q+47.3%+$145.2K
BOOTHBAY FUND MANAGEMENT, LLC$439.7K263,2980.01%3q-11.0%-$54.5K
FEDERATED HERMES, INC.$414.5K248,2080.00%5q+2.7%+$11.0K
SHELTON CAPITAL MANAGEMENT$334.5K200,3000.01%12qHELD
DIMENSIONAL FUND ADVISORS LP$272.9K163,4430.00%8q+58.5%+$100.7K
GOLDMAN SACHS GROUP INC$252.8K151,3650.00%11q-41.9%-$182.4K
CITADEL ADVISORS LLC$252.7K CALL+PUToptions only0.00%11qOPTIONS
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC$236.9K141,8820.00%2q-22.9%-$70.5K
Janney Montgomery Scott LLC$222.0K133,0000.00%5qHELD
Caption Management, LLC$204.5K122,4520.00%6q+516.0%+$171.3K
ALLIANCEBERNSTEIN L.P.$183.6K117,6800.00%5q+15.7%+$25.0K
SIR Capital Management, L.P.$183.1K109,6510.02%9q+6.3%+$10.8K
LOS ANGELES CAPITAL MANAGEMENT LLC$161.0K96,4300.00%newNEW
MOORE CAPITAL MANAGEMENT, LP$141.9K85,0000.00%7qHELD
Bank of New York Mellon Corp$140.0K83,8210.00%9qHELD
SIMPLEX TRADING, LLC$129.6K77,6040.00%newNEW
XTX Topco Ltd$123.5K73,9440.00%7q+511.6%+$103.3K
JANE STREET GROUP, LLC$122.7K CALL+PUToptions only0.00%11qOPTIONS
HRT FINANCIAL LP$101.0K60,6200.00%newNEW
LPL Financial LLC$95.3K57,0740.00%12q+7.6%+$6.8K
DEUTSCHE BANK AG\$93.6K56,0640.00%9q+3.5%+$3.2K
Qube Research & Technologies Ltd$93.2K55,8250.00%2q+52.6%+$32.1K
RHUMBLINE ADVISERS$90.0K53,9190.00%9q+9.8%+$8.0K
IMC-Chicago, LLC$69.2K41,4490.00%newNEW
OSAIC HOLDINGS, INC.$68.1K40,7850.00%13qHELD
MILLENNIUM MANAGEMENT LLC$63.2K37,8440.00%10q-94.5%-$1.1M
WELLS FARGO & COMPANY/MN$59.1K35,3830.00%13q+22.8%+$11.0K
Jain Global LLC$58.1K34,8190.00%newNEW
Russell Investments Group, Ltd.$55.9K33,5030.00%6q+1091.4%+$51.3K
SIG BROKERAGE, LP$53.3K31,9420.00%5qHELD
CANADA PENSION PLAN INVESTMENT BOARD$49.6K29,7000.00%newNEW
LMR Partners LLP$48.1K28,7940.00%3q-19.7%-$11.8K
Quadrature Capital Ltd$45.0K26,9340.00%newNEW
BANK OF AMERICA CORP /DE/$45.0K26,9300.00%13q-23.2%-$13.6K
Virtu Financial LLC$43.0K26,0270.00%newNEW
Cambridge Investment Research Advisors, Inc.$38.0K22,6780.00%newNEW
TWO SIGMA SECURITIES, LLC$36.8K22,0600.00%newNEW
Invesco Ltd.$36.8K22,0430.00%5q+95.3%+$18.0K
CAPTRUST FINANCIAL ADVISORS$33.1K19,8460.00%3q+37.6%+$9.1K
CITIGROUP INC$32.8K19,6520.00%10q+1139.1%+$30.2K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.$32.5K19,4540.00%8q+28.7%+$7.2K
Polymer Capital Management (US) LLC$31.3K18,7310.00%3q-63.2%-$53.8K
GROUP ONE TRADING LLC$31.2K18,6720.00%5q+26.4%+$6.5K
Mariner, LLC$31.0K18,5520.00%newNEW
JPMORGAN CHASE & CO$30.4K18,2110.00%12q+7.7%+$2.2K
INTEGRITY ALLIANCE, LLC.$29.1K17,4000.00%3qHELD
Kapstone Financial Advisors LLC$29.1K17,3950.01%7qHELD
PRICE T ROWE ASSOCIATES INC /MD/$29.0K17,0280.00%6qHELD
Legacy Advisors, LLC$27.4K16,4130.00%4qHELD
Engineers Gate Manager LP$27.2K16,2610.00%8q-47.5%-$24.5K
IEQ CAPITAL, LLC$27.1K16,2070.00%newNEW
MERCER GLOBAL ADVISORS INC /ADV$26.8K16,0470.00%newNEW
Point72 Asset Management, L.P.$25.6K15,3400.00%3q-55.0%-$31.3K
SEI INVESTMENTS CO$21.5K12,8540.00%6qHELD
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC$21.1K13,5280.00%newNEW
ROYAL BANK OF CANADA$21.0K12,8310.00%13q+187.2%+$13.7K
Creative Planning$20.4K12,2170.00%newNEW
Private Advisor Group, LLC$20.4K12,2000.00%2qHELD
Vanguard Global Advisers, LLC$20.3K12,1720.00%2qHELD
Aigen Investment Management, LP$19.7K11,8120.01%newNEW
Focus Partners Wealth$18.1K10,8630.00%newNEW
INTECH INVESTMENT MANAGEMENT LLC$18.0K10,7860.00%7qHELD
TRUIST FINANCIAL CORP$16.7K10,0000.00%13qHELD
BARCLAYS PLC$14.9K8,9480.00%11q+1.2%
Arax Advisory Partners$14.9K8,9430.00%2q+7290.9%+$14.7K
Tower Research Capital LLC (TRC)$12.2K7,3320.00%11q-31.0%-$5.5K
LANARK FINANCIAL, INC.$10.6K6,3400.00%12qHELD
NEW YORK STATE COMMON RETIREMENT FUND$8.5K5,1000.00%9qHELD
FIFTH THIRD BANCORP$8.3K5,0000.00%13qHELD
Police & Firemen's Retirement System of New Jersey$7.1K4,2520.00%7qHELD
Legal & General Group Plc$5.2K3,0950.00%9qHELD
Quarry LP$3.8K2,2570.00%newNEW
Ameritas Investment Partners, Inc.$3.5K2,0720.00%9qHELD
FMR LLC$3.3K1,9510.00%9q-4.5%

Showing the largest 100 of 122 reported holders.

What the company announced

Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.

FiledEvent dateWhatSource
2026-10-222026-10-16Material agreement enteredfiling
2026-09-112026-09-08Material agreement enteredfiling
2026-09-032026-08-31Acquisition or disposal completed Material agreement enteredfiling

What the insiders did

Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.

Ten percent owners and entities

Usually an institution that crossed a reporting threshold, or a company taking a strategic stake, rather than an individual with a view.

DateInsiderRoleSideSharesValue
2026-08-148 Rivers Capital, LLC10% ownerSold507,100$990.5K
2026-08-14NPEH, LLC10% ownerSold507,100$990.5K
2026-05-128 Rivers Capital, LLC10% ownerSold400,000$975.6K
2026-05-12NPEH, LLC10% ownerSold400,000$975.6K
2026-08-258 Rivers Capital, LLC10% ownerSold201,550$384.3K
2026-08-25NPEH, LLC10% ownerSold201,550$384.3K

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.

QuarterHoldersValue SharesNewAdded TrimmedOptions
Q3 202615$1.5M1,005,3952440.0%
Q2 2026122$67.3M38,420,5541947274.7%
Q1 2026113$56.2M35,213,0401337312.2%
Q4 2025115$80.1M34,709,8792525391.2%
Q3 2025102$109.5M32,685,40716322910.1%
Q2 202597$83.4M30,202,10418372210.5%
Q1 2025108$83.4M30,935,7772438252.4%
Q4 2024114$352.3M31,708,0492839204.7%
Q3 202491$215.6M30,701,3071731190.2%
Q2 202493$293.8M29,761,4193124190.4%
Q1 202476$310.3M27,197,8322019180.2%
Q4 202370$339.0M33,523,8582520110.1%
Q3 202358$486.7M32,233,9482214100.0%
Q2 202342$238.5M18,347,20441000.0%