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NET Power Inc (NPWR)

CUSIP: 64107A105 | NYSE | Industrials · Specialty Industrial Machinery | Micro Cap | 270 institutional holders

Quarters

Q3 2026Q2 2026Q1 2026Q4 2025Q3 2025
CompareDetailedHistoricalFundsOptions13D/13GPeersTargetingTrading SummaryProfile

Beneficial Ownership — 13D / 13G

Full history →

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13D/A8 Rivers Capital, LLC
with 8Rch, LLC
18,972,78017.9%−1,722,100Aug 13, 2026No 13F filer matched
13D/ANpeh, LLC21,984,66021.0%

Institutional Holders — Q3 2026

Argentarii, LLC746,799
0.3% of portfolio›$1.1M
MRA Advisory Group214,893
0.1% of portfolio›$320.2K
Dimensional Fund Advisors LP109,463
0.0% of portfolio›$163.2K
Bank of New York Mellon Corp95,353
0.0% of portfolio›$142.1K
Imc-Chicago, LLC29,149
0.0% of portfolio›$43.4K
Clear Harbor Asset Management, LLC27,500
0.0% of portfolio›$41.0K
Integrity Alliance, Llc.17,400
0.0% of portfolio›$25.9K
Legacy Advisors, LLC16,393
0.0% of portfolio›$24.4K
Simplex Trading, LLC11,373
0.0% of portfolio›$16.9K
Cambridge Investment Research Advisors, Inc.11,339
0.0% of portfolio›$17
Truist Financial Corp10,000
0.0% of portfolio›$14.9K
Lanark Financial, Inc.6,340
0.0% of portfolio›$9.4K
Fifth Third Bancorp5,000
0.0% of portfolio›$7.5K
Citigroup Inc2,092
0.0% of portfolio›$3.1K
EverSource Wealth Advisors, LLC1,034
0.0% of portfolio›$1.5K
Essential Partners LLC901
0.0% of portfolio›$1.3K
Sterling Capital Management LLC823
0.0% of portfolio›$1.2K
Fortitude Family Office, LLC523
0.0% of portfolio›$779
Gamma Investing LLC446
0.0% of portfolio›$665
SBI Securities Co., Ltd.405
0.0% of portfolio›$603
Nisa Investment Advisors, LLC229
0.0% of portfolio›$341
Farther Finance Advisors, LLC116
0.0% of portfolio›$173
IFP Advisors, Inc85
0.0% of portfolio›$127
Silver Grove Financial Group, Inc.48
0.0% of portfolio›$72
Caitong International Asset Management Co., Ltd34
0.0% of portfolio›$51
SJS Investment Consulting Inc.8
0.0% of portfolio›$12
StyleTurnoverLocationFiled
Argentarii, LLC
746,799$1.1M0.3%GrowthLowCincinnati, OH2026-10-28
MRA Advisory Group
214,893$320.2K0.1%ETFMediumParsippany, NJ2026-10-07
Dimensional Fund Advisors LP
109,463$163.2K0.0%IndexLowAustin, TX2026-11-04
Bank of New York Mellon Corp
95,353$142.1K0.0%CoreLowNew York, NY2026-11-05
Imc-Chicago, LLC
29,149$43.4K0.0%GARPVery HighChicago, IL2026-11-05
Clear Harbor Asset Management, LLC
27,500$41.0K0.0%CoreLowStamford, CT2026-11-05
Integrity Alliance, Llc.
17,400$25.9K0.0%ETFMediumUrbandale, IA2026-10-29
Legacy Advisors, LLC
16,393$24.4K0.0%ETFLowPlymouth Meeting, PA2026-10-19
Simplex Trading, LLC
11,373$16.9K0.0%CoreVery HighChicago, IL2026-11-04
Cambridge Investment Research Advisors, Inc.
11,339$170.0%ETFLowFairfield, IA2026-11-02
Truist Financial Corp
10,000$14.9K0.0%CoreLowCharlotte, NC2026-10-30
Lanark Financial, Inc.
6,340$9.4K0.0%CoreMediumBirmingham, AL2026-10-26
Fifth Third Bancorp
5,000$7.5K0.0%IndexVery LowCincinnati, OH2026-11-05
Citigroup Inc
2,092$3.1K0.0%CoreMediumNew York, NY2026-11-04
EverSource Wealth Advisors, LLC
1,034$1.5K0.0%CoreMediumBirmingham, AL2026-11-04
Essential Partners LLC
901$1.3K0.0%ValueMediumRancho Santa Fe, CA2026-10-14
Sterling Capital Management LLC
823$1.2K0.0%GARPMediumCharlotte, NC2026-10-22
Fortitude Family Office, LLC
523$7790.0%ETFMediumScottsdale, AZ2026-10-14
Gamma Investing LLC
446$6650.0%IndexVery LowFoster City, CA2026-10-08
SBI Securities Co., Ltd.
405$6030.0%Agg GrowthLowTokyo, Mexico2026-10-22
Nisa Investment Advisors, LLC
229$3410.0%IndexVery LowSt. Louis, MO2026-10-20
Farther Finance Advisors, LLC
116$1730.0%IndexLowSan Francisco, CA2026-10-08
IFP Advisors, Inc
85$1270.0%GrowthLowTampa, FL2026-10-16
Silver Grove Financial Group, Inc.
48$720.0%CoreMediumOrchard Park, NY2026-11-05
Caitong International Asset Management Co., Ltd
34$510.0%GrowthVery HighHong Kong, South Korea2026-10-29
SJS Investment Consulting Inc.
8$120.0%ETFVery LowSylvania, OH2026-10-26
−1,295,220
Jan 26, 2026
No 13F filer matched
13D/ACynda Beauchamp00.0%Fell below 5%Nov 2, 2025No 13F filer matched
13D/ATillandsia, Inc.00.0%No shares heldOct 27, 2025No 13F filer matched
13D/A8 Rivers Capital, LLC18,972,780
17.9% of class · Aug 13, 2026−1,722,100
with 8Rch, LLC
No 13F filer matched
13D/ANpeh, LLC21,984,660
21.0% of class · Jan 26, 2026−1,295,220
No 13F filer matched
13D/ACynda Beauchamp0
0.0% of class · Nov 2, 2025Fell below 5%
No 13F filer matched
13D/ATillandsia, Inc.0
0.0% of class · Oct 27, 2025No shares held
No 13F filer matched