Ardsley Advisory Partners’s NET Power NPWR Stock Holding History

Ardsley Advisory Partners’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
2025 Q4	–	Sell	-107,817	Closed	-$325K	–	171
2025 Q3	$325K	Buy	+107,817	New	+$288K	0.04%	120

Other funds holding NPWR

ALS

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

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

CenterBook Partners Greenwich, Connecticut $2.04B AUM 35.27% 1-Year Est. Return

Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return

Sourcerock Group Denver, Colorado $1.92B AUM 45.54% 1-Year Est. Return

PEAK6 Chicago, Illinois $48.6B AUM 40.56% 1-Year Est. Return

Cohen & Steers New York $63.2B AUM 17.15% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Ardsley Advisory Partners's NPWR Position: Q4 2025 in Review

Ardsley Advisory Partners sold out of NET Power (NPWR) in Q4 2025, closing a stake of 107,817 shares — an estimated $325K sold.

Ardsley Advisory Partners first reported a position in NPWR in Q3 2025 and held it in 1 quarter. The position peaked at $325K in Q3 2025. 114 funds tracked by Wall St. Rank hold NPWR as of Q4 2025.

Ardsley Advisory Partners reported no remaining NET Power position as of Q4 2025 after selling out during the quarter.
Ardsley Advisory Partners sold 107,817 NET Power shares in Q4 2025, an estimated $325K.
Ardsley Advisory Partners first reported a position in NET Power in Q3 2025 and held it in 1 quarter.
Ardsley Advisory Partners's NET Power position peaked at $325K in Q3 2025.
114 funds tracked by Wall St. Rank held NET Power as of Q4 2025.

Based on Ardsley Advisory Partners's 13F filing for Q4 2025, filed 17 Feb 2026.