DOSSIER · 13F Holders · Q2 2026
NPWR

NET POWER INC

129 institutions still hold NET POWER INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 64107A105·129 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$57M
visible holders
Holders
129
filers reporting
Concentration
28.70%
Share Andrew L. #1
top holder share
AI Holders Summary · Q2 2026

129 institutions reported NPWR in Q2 2026. Share Andrew L. leads at 28.7% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Share Andrew L.
CIK 0001693672
$16M9.8M8.43%Q2 2026
02
PEAK6 LLC
CIK 0001389958
$6M3.4M0.01%Q2 2026
03
HITE Hedge Asset Management LLC
CIK 0001568939
$5M2.9M0.26%Q2 2026
04
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
$5M2.8M0.01%Q2 2026
05
BlackRock, Inc.
CIK 0002012383
$4M2.4M0.00%Q2 2026
06
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$3M1.8M0.00%Q2 2026
07
Defiance ETFs, LLC
CIK 0001732541
$3M1.6M0.04%Q2 2026
08
Tidal Investments LLC
CIK 0001600064
$3M1.5M0.00%Q2 2026
09
Sourcerock Group LLC
CIK 0001822531
$2M1.4M0.12%Q2 2026
10
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$2M1.0M0.00%Q2 2026
11
COHEN & STEERS, INC.
CIK 0001284812
$1M892K0.00%Q1 2026
12
Argentarii, LLC
CIK 0002030055
$1M747K0.36%Q2 2026
13
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$1M661K0.00%Q2 2026
14
STATE STREET CORP
CIK 0000093751
$1M624K0.00%Q2 2026
15
UBS Group AG
CIK 0001610520
$1M611K0.00%Q2 2026
16
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$818K490K0.00%Q2 2026
17
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
$673K431K0.00%Q1 2026
18
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$643K385K0.00%Q2 2026
19
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$592K354K0.00%Q2 2026
20
NORTHERN TRUST CORP
CIK 0000073124· Index
$559K335K0.00%Q2 2026
Page 1 of 7
109 more holders available. Log in →
Insiders at NET POWER INC
Npeh, LlcAlexander RalphKelliher Joseph TVeltmann AlejandraPeterson Carol R.