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AlphaQuest’s Amphastar Pharmaceuticals AMPH Stock Holding History

AlphaQuest’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
2026
Q1 		– Sell
-7,720
Closed -$207K – 113
2025
Q4 		$207K Sell
7,720
-855
-10% -$22K 0.01% 1432
2025
Q3 		$229K Sell
8,575
-20,307
-70% -$524K 0.01% 1328
2025
Q2 		$663K Buy
28,882
+17,289
+149% +$429K 0.07% 473
2025
Q1 		$336K Buy
11,593
+6,731
+138% +$215K 0.04% 707
2024
Q4 		$181K Sell
4,862
-2,724
-36% -$125K 0.02% 899
2024
Q3 		$368K Buy
7,586
+3,237
+74% +$142K 0.03% 805
2024
Q2 		$174K Buy
4,349
+4,348
+434,800% +$180K 0.02% 793
2024
Q1 		$44 Buy
+1
New +$52 ﹤0.01% 1611

Other funds holding AMPH

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
TD Asset Management
TD Asset Management Toronto, Ontario, Canada $123B AUM 34.51% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
BTW
Boston Trust Walden Boston, Massachusetts $12.2B AUM 12.45% 1-Year Est. Return

AlphaQuest's AMPH Position: Q1 2026 in Review

AlphaQuest sold out of Amphastar Pharmaceuticals (AMPH) in Q1 2026, closing a stake of 7,720 shares — an estimated $207K sold.

AlphaQuest first reported a position in AMPH in Q1 2024 and held it in 8 quarters. The position peaked at $663K in Q2 2025. 215 funds tracked by Wall St. Rank hold AMPH as of Q1 2026.

  • AlphaQuest reported no remaining Amphastar Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
  • AlphaQuest sold 7,720 Amphastar Pharmaceuticals shares in Q1 2026, an estimated $207K.
  • AlphaQuest first reported a position in Amphastar Pharmaceuticals in Q1 2024 and held it in 8 quarters.
  • AlphaQuest's Amphastar Pharmaceuticals position peaked at $663K in Q2 2025.
  • 215 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q1 2026.

Based on AlphaQuest's 13F filing for Q1 2026.