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Fox Run Management’s Amprius Technologies AMPX Stock Holding History

Fox Run Management’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
-74,774
Closed -$590K – 885
2025
Q4 		$590K Buy
74,774
+42,251
+130% +$483K 0.09% 420
2025
Q3 		$342K Buy
+32,523
New +$256K 0.05% 638

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VCM
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Jane Street
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
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Fox Run Management's AMPX Position: Q1 2026 in Review

Fox Run Management sold out of Amprius Technologies (AMPX) in Q1 2026, closing a stake of 74,774 shares — an estimated $590K sold.

Fox Run Management first reported a position in AMPX in Q3 2025 and held it in 2 quarters. The position peaked at $590K in Q4 2025. 245 funds tracked by Wall St. Rank hold AMPX as of Q1 2026.

  • Fox Run Management reported no remaining Amprius Technologies position as of Q1 2026 after selling out during the quarter.
  • Fox Run Management sold 74,774 Amprius Technologies shares in Q1 2026, an estimated $590K.
  • Fox Run Management first reported a position in Amprius Technologies in Q3 2025 and held it in 2 quarters.
  • Fox Run Management's Amprius Technologies position peaked at $590K in Q4 2025.
  • 245 funds tracked by Wall St. Rank held Amprius Technologies as of Q1 2026.

Based on Fox Run Management's 13F filing for Q1 2026, filed 12 May 2026.