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GSA Capital Partners’s Amphastar Pharmaceuticals AMPH Stock Holding History

GSA Capital Partners’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
Q3 		– Sell
-57,057
Closed -$1.31M – 1628
2025
Q2 		$1.31M Buy
57,057
+11,760
+26% +$292K 0.09% 301
2025
Q1 		$1.31M Buy
45,297
+27,863
+160% +$890K 0.12% 221
2024
Q4 		$647K Buy
17,434
+11,185
+179% +$511K 0.05% 712
2024
Q3 		$303K Buy
+6,249
New +$274K 0.02% 1208
2023
Q2 		– Sell
-21,852
Closed -$819K – 1488
2023
Q1 		$819K Buy
+21,852
New +$716K 0.08% 429
2021
Q2 		– Sell
-34,425
Closed -$631K – 1298
2021
Q1 		$631K Buy
+34,425
New +$640K 0.1% 243
2018
Q3 		– Sell
-33,000
Closed -$504K – 1613
2018
Q2 		$504K Buy
+33,000
New +$577K 0.03% 1149
2017
Q4 		– Sell
-22,400
Closed -$400K – 1539
2017
Q3 		$400K Buy
+22,400
New +$368K 0.03% 1094
2017
Q1 		– Sell
-56,544
Closed -$1.04M – 1726
2016
Q4 		$1.04M Buy
56,544
+38,444
+212% +$748K 0.06% 544
2016
Q3 		$343K Buy
+18,100
New +$329K 0.02% 1285
2016
Q1 		– Sell
-11,500
Closed -$164K – 1647
2015
Q4 		$164K Sell
11,500
-986
-8% -$13K 0.01% 1678
2015
Q3 		$146K Buy
+12,486
New +$187K 0.01% 1620
2015
Q2 		– Sell
-14,400
Closed -$215K – 1927
2015
Q1 		$215K Sell
14,400
-15,900
-52% -$213K 0.01% 1891
2014
Q4 		$352K Buy
+30,300
New +$330K 0.02% 1170

Other funds holding AMPH

BlackRock
BlackRock New York $6.73T AUM 46.02% 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 $115B AUM 41.58% 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 $3.38T AUM 44.17% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
BTW
Boston Trust Walden Boston, Massachusetts $13.1B AUM 24.63% 1-Year Est. Return
EIP
Epoch Investment Partners New York $17.6B AUM 34.17% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return

GSA Capital Partners's AMPH Position: Q3 2025 in Review

GSA Capital Partners sold out of Amphastar Pharmaceuticals (AMPH) in Q3 2025, closing a stake of 57,057 shares — an estimated $1.31M sold.

GSA Capital Partners first reported a position in AMPH in Q4 2014 and held it in 14 quarters. The position peaked at $1.31M in Q1 2025. 243 funds tracked by Wall St. Rank hold AMPH as of Q3 2025.

  • GSA Capital Partners reported no remaining Amphastar Pharmaceuticals position as of Q3 2025 after selling out during the quarter.
  • GSA Capital Partners sold 57,057 Amphastar Pharmaceuticals shares in Q3 2025, an estimated $1.31M.
  • GSA Capital Partners first reported a position in Amphastar Pharmaceuticals in Q4 2014 and held it in 14 quarters.
  • GSA Capital Partners's Amphastar Pharmaceuticals position peaked at $1.31M in Q1 2025.
  • 243 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q3 2025.

Based on GSA Capital Partners's 13F filing for Q3 2025, filed 7 Nov 2025.