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CX Institutional’s Amphastar Pharmaceuticals AMPH Stock Holding History

CX Institutional’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 		$25K Sell
1,259
-1,714
-58% -$34.6K ﹤0.01% 1118
2026
Q1 		$58K Sell
2,973
-61,150
-95% -$1.5M ﹤0.01% 948
2025
Q4 		$1.72M Buy
64,123
+807
+1% +$20.8K 0.05% 224
2025
Q3 		$1.69M Sell
63,316
-199,967
-76% -$5.16M 0.05% 226
2025
Q2 		$6.04M Buy
263,283
+181,136
+221% +$4.49M 0.21% 117
2025
Q1 		$2.38M Buy
+82,147
New +$2.62M 0.09% 180

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

CX Institutional's AMPH Position: Q2 2026 in Review

CX Institutional reduced its Amphastar Pharmaceuticals (AMPH) stake by 58% in Q2 2026, selling an estimated $34.6K and leaving 1,259 shares worth $25K. The position accounts for ﹤0.01% of the portfolio, ranked #1118.

CX Institutional first reported a position in AMPH in Q1 2025 and has held it in 6 quarters since. The position peaked at $6.04M in Q2 2025. 210 funds tracked by Wall St. Rank hold AMPH as of Q2 2026.

  • CX Institutional held 1,259 shares of Amphastar Pharmaceuticals worth $25K as of Q2 2026.
  • CX Institutional sold 1,714 Amphastar Pharmaceuticals shares in Q2 2026, an estimated $34.6K.
  • Amphastar Pharmaceuticals made up ﹤0.01% of CX Institutional's portfolio in Q2 2026, its #1118 holding.
  • CX Institutional first reported a position in Amphastar Pharmaceuticals in Q1 2025 and has held it in 6 quarters since.
  • CX Institutional's Amphastar Pharmaceuticals position peaked at $6.04M in Q2 2025.
  • 210 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q2 2026.

Based on CX Institutional's 13F filing for Q2 2026, filed 2 Jul 2026.