EGM
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Engineers Gate Manager’s Amphastar Pharmaceuticals AMPH Stock Holding History

Engineers Gate Manager’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 		$609K Buy
+30,191
New +$609K 0.01% 1382
2025
Q3 		– Sell
-53,348
Closed -$1.22M – 2134
2025
Q2 		$1.22M Buy
53,348
+14,803
+38% +$367K 0.02% 1013
2025
Q1 		$1.12M Buy
38,545
+9,437
+32% +$301K 0.02% 1002
2024
Q4 		$1.08M Buy
29,108
+2,658
+10% +$122K 0.02% 964
2024
Q3 		$1.28M Sell
26,450
-9,245
-26% -$406K 0.03% 859
2024
Q2 		$1.43M Buy
35,695
+10,250
+40% +$425K 0.03% 726
2024
Q1 		$1.12M Buy
25,445
+14,391
+130% +$743K 0.03% 761
2023
Q4 		$684K Buy
11,054
+6,392
+137% +$336K 0.02% 1012
2023
Q3 		$214K Buy
+4,662
New +$254K 0.01% 1466
2023
Q2 		– Sell
-12,826
Closed -$481K – 1709
2023
Q1 		$481K Sell
12,826
-3,447
-21% -$113K 0.02% 999
2022
Q4 		$456K Buy
+16,273
New +$473K 0.03% 953
2022
Q1 		– Sell
-18,094
Closed -$421K – 1824
2021
Q4 		$421K Buy
+18,094
New +$370K 0.02% 1182
2021
Q3 		– Sell
-17,184
Closed -$346K – 1612
2021
Q2 		$346K Sell
17,184
-4,986
-22% -$93.9K 0.02% 1038
2021
Q1 		$406K Sell
22,170
-7,845
-26% -$146K 0.02% 1123
2020
Q4 		$604K Buy
30,015
+461
+2% +$8.97K 0.03% 867
2020
Q3 		$554K Sell
29,554
-22,544
-43% -$454K 0.03% 941
2020
Q2 		$1.17M Buy
52,098
+28,091
+117% +$514K 0.06% 530
2020
Q1 		$356K Buy
+24,007
New +$418K 0.03% 949
2018
Q3 		– Sell
-25,333
Closed -$387K – 892
2018
Q2 		$387K Buy
+25,333
New +$443K 0.03% 624

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

Engineers Gate Manager's AMPH Position: Q2 2026 in Review

Engineers Gate Manager opened a new position in Amphastar Pharmaceuticals (AMPH) in Q2 2026: 30,191 shares worth $609K. The stake represents 0.01% of the portfolio and ranks #1382 among its holdings. This is a return to the name: Engineers Gate Manager previously reported a position in AMPH as recently as Q2 2025.

Engineers Gate Manager first reported a position in AMPH in Q2 2018 and has held it in 19 quarters since. The position peaked at $1.43M in Q2 2024. 212 funds tracked by Wall St. Rank hold AMPH as of Q2 2026.

  • Engineers Gate Manager held 30,191 shares of Amphastar Pharmaceuticals worth $609K as of Q2 2026.
  • Amphastar Pharmaceuticals was a new Engineers Gate Manager position in Q2 2026.
  • Amphastar Pharmaceuticals made up 0.01% of Engineers Gate Manager's portfolio in Q2 2026, its #1382 holding.
  • Engineers Gate Manager first reported a position in Amphastar Pharmaceuticals in Q2 2018 and has held it in 19 quarters since.
  • Engineers Gate Manager's Amphastar Pharmaceuticals position peaked at $1.43M in Q2 2024.
  • 212 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q2 2026.

Based on Engineers Gate Manager's 13F filing for Q2 2026, filed 14 Aug 2026.