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Quarry LP’s Amphastar Pharmaceuticals AMPH Stock Holding History

Quarry LP’s Portfolio AMPH Stock Details AMPH Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-1,183
Closed -$31.5K – 2119
2025
Q3 		$31.5K Buy
+1,183
New +$30.5K 0.01% 1131
2024
Q3 		– Sell
-182
Closed -$7.28K – 1614
2024
Q2 		$7.28K Buy
+182
New +$7.54K ﹤0.01% 1410

Other funds holding AMPH

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
TD Asset Management
TD Asset Management Toronto, Ontario, Canada $115B AUM 41.58% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
EIP
Epoch Investment Partners New York $17.6B AUM 34.17% 1-Year Est. Return
BTW
Boston Trust Walden Boston, Massachusetts $13.1B AUM 24.63% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Quarry LP's AMPH Position: Q4 2025 in Review

Quarry LP sold out of Amphastar Pharmaceuticals (AMPH) in Q4 2025, closing a stake of 1,183 shares — an estimated $31.5K sold.

Quarry LP first reported a position in AMPH in Q2 2024 and held it in 2 quarters. The position peaked at $31.5K in Q3 2025. 235 funds tracked by Wall St. Rank hold AMPH as of Q4 2025.

  • Quarry LP reported no remaining Amphastar Pharmaceuticals position as of Q4 2025 after selling out during the quarter.
  • Quarry LP sold 1,183 Amphastar Pharmaceuticals shares in Q4 2025, an estimated $31.5K.
  • Quarry LP first reported a position in Amphastar Pharmaceuticals in Q2 2024 and held it in 2 quarters.
  • Quarry LP's Amphastar Pharmaceuticals position peaked at $31.5K in Q3 2025.
  • 235 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q4 2025.

Based on Quarry LP's 13F filing for Q4 2025, filed 13 Feb 2026.