Commonwealth Equity Services
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Commonwealth Equity Services’s Amphastar Pharmaceuticals AMPH Stock Holding History

Commonwealth Equity Services’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
-8,742
Closed -$234K – 4309
2025
Q4 		$234K Buy
8,742
+882
+11% +$22.7K ﹤0.01% 3850
2025
Q3 		$209K Buy
+7,860
New +$203K ﹤0.01% 3919
2024
Q4 		– Sell
-5,651
Closed -$274K – 4092
2024
Q3 		$274K Sell
5,651
-4,539
-45% -$199K ﹤0.01% 3430
2024
Q2 		$408K Sell
10,190
-17
-0.2% -$704 ﹤0.01% 3016
2024
Q1 		$448K Buy
10,207
+5,246
+106% +$271K ﹤0.01% 2913
2023
Q4 		$307K Sell
4,961
-4,900
-50% -$257K ﹤0.01% 3145
2023
Q3 		$454K Buy
9,861
+2,674
+37% +$146K ﹤0.01% 2674
2023
Q2 		$413K Buy
+7,187
New +$319K ﹤0.01% 2779

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
TD Asset Management
TD Asset Management Toronto, Ontario, Canada $115B AUM 41.58% 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
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
BTW
Boston Trust Walden Boston, Massachusetts $13.1B AUM 24.63% 1-Year Est. Return

Commonwealth Equity Services's AMPH Position: Q1 2026 in Review

Commonwealth Equity Services sold out of Amphastar Pharmaceuticals (AMPH) in Q1 2026, closing a stake of 8,742 shares — an estimated $234K sold.

Commonwealth Equity Services first reported a position in AMPH in Q2 2023 and held it in 8 quarters. The position peaked at $454K in Q3 2023. 215 funds tracked by Wall St. Rank hold AMPH as of Q1 2026.

  • Commonwealth Equity Services reported no remaining Amphastar Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
  • Commonwealth Equity Services sold 8,742 Amphastar Pharmaceuticals shares in Q1 2026, an estimated $234K.
  • Commonwealth Equity Services first reported a position in Amphastar Pharmaceuticals in Q2 2023 and held it in 8 quarters.
  • Commonwealth Equity Services's Amphastar Pharmaceuticals position peaked at $454K in Q3 2023.
  • 215 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q1 2026.

Based on Commonwealth Equity Services's 13F filing for Q1 2026, filed 27 Apr 2026.