SIR Capital Management’s NET Power NPWR Stock Holding History

SIR Capital Management’s Portfolio NPWR Stock Details NPWR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$161K	Hold	103,178	–	–	0.02%	88
2025 Q4	$235K	Hold	103,178	–	–	0.03%	80
2025 Q3	$311K	Sell	103,178 -196,900	-66%	-$526K	0.03%	78
2025 Q2	$741K	Hold	300,078	–	–	0.07%	85
2025 Q1	$789K	Sell	300,078 -108,300	-27%	-$764K	0.07%	71
2024 Q4	$4.32M	Sell	408,378 -8,260	-2%	-$80.9K	0.45%	55
2024 Q3	$2.92M	Buy	416,638 +317,855	+322%	+$2.67M	0.28%	56
2024 Q2	$971K	Buy	+98,783	New	+$1.05M	0.1%	76
2022 Q4	–	Sell	-400,000	Closed	-$3.94M	–	71
2022 Q3	$3.94M	Hold	400,000	–	–	0.67%	47
2022 Q2	$3.9M	Hold	400,000	–	–	0.54%	45
2022 Q1	$3.94M	Hold	400,000	–	–	0.69%	42
2021 Q4	$4M	Hold	400,000	–	–	0.63%	44
2021 Q3	$3.96M	Buy	+400,000	New	+$3.92M	0.58%	40

Other funds holding NPWR

ALS

Andrew L. Share $193M AUM 1.47% 1-Year Est. Return

HHAM

HITE Hedge Asset Management Braintree, Massachusetts $1.77B AUM 38.67% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

PEAK6 Chicago, Illinois $42.6B AUM 66.3% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return

Sourcerock Group Denver, Colorado $2.48B AUM 72.25% 1-Year Est. Return

Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Cohen & Steers New York $57.6B AUM 8.03% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

SIR Capital Management's NPWR Position: Q1 2026 in Review

SIR Capital Management held its NET Power (NPWR) position steady in Q1 2026 at 103,178 shares worth $161K. The position accounts for 0.02% of the portfolio, ranked #88.

SIR Capital Management first reported a position in NPWR in Q3 2021 and has held it in 13 quarters since. The position peaked at $4.32M in Q4 2024. 113 funds tracked by Wall St. Rank hold NPWR as of Q1 2026.

SIR Capital Management held 103,178 shares of NET Power worth $161K as of Q1 2026.
SIR Capital Management left its NET Power share count unchanged in Q1 2026.
NET Power made up 0.02% of SIR Capital Management's portfolio in Q1 2026, its #88 holding.
SIR Capital Management first reported a position in NET Power in Q3 2021 and has held it in 13 quarters since.
SIR Capital Management's NET Power position peaked at $4.32M in Q4 2024.
113 funds tracked by Wall St. Rank held NET Power as of Q1 2026.

Based on SIR Capital Management's 13F filing for Q1 2026, filed 15 May 2026.