ACM
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Aster Capital Management’s Amphastar Pharmaceuticals AMPH Stock Holding History

Aster Capital Management’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
Q2 		$4.8K Buy
+238
New +$4.8K ﹤0.01% 727
2026
Q1 		– Sell
-200
Closed -$5.36K – 836
2025
Q4 		$5.36K Buy
+200
New +$5.15K ﹤0.01% 859
2025
Q1 		– Sell
-2,869
Closed -$107K – 1233
2024
Q4 		$107K Buy
+2,869
New +$131K 0.04% 375

Other funds holding AMPH

BlackRock
BlackRock New York $6.73T AUM 46.02% 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 $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Aster Capital Management's AMPH Position: Q2 2026 in Review

Aster Capital Management opened a new position in Amphastar Pharmaceuticals (AMPH) in Q2 2026: 238 shares worth $4.8K. The stake represents ﹤0.01% of the portfolio and ranks #727 among its holdings. This is a return to the name: Aster Capital Management previously reported a position in AMPH as recently as Q4 2025.

Aster Capital Management first reported a position in AMPH in Q4 2024 and has held it in 3 quarters since. The position peaked at $107K in Q4 2024. 211 funds tracked by Wall St. Rank hold AMPH as of Q2 2026.

  • Aster Capital Management held 238 shares of Amphastar Pharmaceuticals worth $4.8K as of Q2 2026.
  • Amphastar Pharmaceuticals was a new Aster Capital Management position in Q2 2026.
  • Amphastar Pharmaceuticals made up ﹤0.01% of Aster Capital Management's portfolio in Q2 2026, its #727 holding.
  • Aster Capital Management first reported a position in Amphastar Pharmaceuticals in Q4 2024 and has held it in 3 quarters since.
  • Aster Capital Management's Amphastar Pharmaceuticals position peaked at $107K in Q4 2024.
  • 211 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q2 2026.

Based on Aster Capital Management's 13F filing for Q2 2026, filed 13 Aug 2026.