Mangrove Partners’s Amprius Technologies AMPX Stock Holding History

Mangrove Partners’s Portfolio AMPX Stock Details AMPX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-116,624	Closed	-$920K	–	435
2025 Q4	$920K	Buy	+116,624	New	+$1.33M	0.08%	126

Other funds holding AMPX

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Jane Street New York $777B AUM 61.18% 1-Year Est. Return

DCM

Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return

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

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

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

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Mangrove Partners's AMPX Position: Q1 2026 in Review

Mangrove Partners sold out of Amprius Technologies (AMPX) in Q1 2026, closing a stake of 116,624 shares — an estimated $920K sold.

Mangrove Partners first reported a position in AMPX in Q4 2025 and held it in 1 quarter. The position peaked at $920K in Q4 2025. 245 funds tracked by Wall St. Rank hold AMPX as of Q1 2026.

Mangrove Partners reported no remaining Amprius Technologies position as of Q1 2026 after selling out during the quarter.
Mangrove Partners sold 116,624 Amprius Technologies shares in Q1 2026, an estimated $920K.
Mangrove Partners first reported a position in Amprius Technologies in Q4 2025 and held it in 1 quarter.
Mangrove Partners's Amprius Technologies position peaked at $920K in Q4 2025.
245 funds tracked by Wall St. Rank held Amprius Technologies as of Q1 2026.

Based on Mangrove Partners's 13F filing for Q1 2026, filed 15 May 2026.