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Frontier Capital Management’s Amphastar Pharmaceuticals AMPH Stock Holding History

Frontier 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
2025
Q2 		– Sell
-119,628
Closed -$3.47M – 295
2025
Q1 		$3.47M Sell
119,628
-3,732
-3% -$119K 0.04% 266
2024
Q4 		$4.58M Sell
123,360
-259
-0.2% -$11.8K 0.04% 256
2024
Q3 		$6M Sell
123,619
-1,149
-0.9% -$50.4K 0.06% 240
2024
Q2 		$4.99M Sell
124,768
-1,195
-0.9% -$49.5K 0.05% 250
2024
Q1 		$5.53M Sell
125,963
-1,574
-1% -$81.3K 0.05% 244
2023
Q4 		$7.89M Buy
127,537
+211
+0.2% +$11.1K 0.08% 211
2023
Q3 		$5.86M Sell
127,326
-18,570
-13% -$1.01M 0.06% 224
2023
Q2 		$8.38M Sell
145,896
-41,164
-22% -$1.82M 0.08% 210
2023
Q1 		$7.01M Sell
187,060
-16,911
-8% -$554K 0.07% 213
2022
Q4 		$5.72M Sell
203,971
-602
-0.3% -$17.5K 0.06% 226
2022
Q3 		$5.75M Sell
204,573
-1,090
-0.5% -$35.6K 0.07% 226
2022
Q2 		$7.16M Sell
205,663
-45,609
-18% -$1.63M 0.08% 227
2022
Q1 		$9.02M Sell
251,272
-936
-0.4% -$26.5K 0.08% 220
2021
Q4 		$5.87M Sell
252,208
-3,605
-1% -$73.7K 0.05% 248
2021
Q3 		$4.86M Buy
255,813
+70,834
+38% +$1.39M 0.04% 258
2021
Q2 		$3.73M Buy
+184,979
New +$3.49M 0.03% 276

Other funds holding AMPH

BlackRock
BlackRock New York $5.72T AUM 30.48% 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 $123B AUM 34.51% 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
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return
EIP
Epoch Investment Partners New York $16.5B AUM 24.3% 1-Year Est. Return
BTW
Boston Trust Walden Boston, Massachusetts $12.2B AUM 12.45% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

Frontier Capital Management's AMPH Position: Q2 2025 in Review

Frontier Capital Management sold out of Amphastar Pharmaceuticals (AMPH) in Q2 2025, closing a stake of 119,628 shares — an estimated $3.47M sold.

Frontier Capital Management first reported a position in AMPH in Q2 2021 and held it in 16 quarters. The position peaked at $9.02M in Q1 2022. 245 funds tracked by Wall St. Rank hold AMPH as of Q2 2025.

  • Frontier Capital Management reported no remaining Amphastar Pharmaceuticals position as of Q2 2025 after selling out during the quarter.
  • Frontier Capital Management sold 119,628 Amphastar Pharmaceuticals shares in Q2 2025, an estimated $3.47M.
  • Frontier Capital Management first reported a position in Amphastar Pharmaceuticals in Q2 2021 and held it in 16 quarters.
  • Frontier Capital Management's Amphastar Pharmaceuticals position peaked at $9.02M in Q1 2022.
  • 245 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q2 2025.

Based on Frontier Capital Management's 13F filing for Q2 2025, filed 14 Aug 2025.