HF
AMPH icon

HRT Financial’s Amphastar Pharmaceuticals AMPH Stock Holding History

HRT Financial’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 		$7.82M Buy
387,530
+331,349
+590% +$6.68M 0.01% 896
2026
Q1 		$1.1M Buy
+56,181
New +$1.37M ﹤0.01% 1998
2025
Q4 		– Sell
-77,746
Closed -$2.07M – 3125
2025
Q3 		$2.07M Buy
77,746
+35,666
+85% +$921K 0.01% 1130
2025
Q2 		$966K Sell
42,080
-44,284
-51% -$1.1M ﹤0.01% 1283
2025
Q1 		$2.5M Buy
+86,364
New +$2.76M 0.02% 720
2024
Q2 		– Sell
-18,608
Closed -$817K – 2168
2024
Q1 		$817K Buy
+18,608
New +$961K 0.01% 983
2023
Q4 		– Sell
-10,057
Closed -$462K – 2272
2023
Q3 		$462K Buy
10,057
+4,028
+67% +$220K ﹤0.01% 1447
2023
Q2 		$346K Sell
6,029
-25,918
-81% -$1.15M ﹤0.01% 1541
2023
Q1 		$1.2M Buy
31,947
+14,254
+81% +$467K 0.01% 859
2022
Q4 		$495K Buy
+17,693
New +$514K 0.01% 1433
2022
Q3 		– Sell
-12,340
Closed -$429K – 2745
2022
Q2 		$429K Buy
+12,340
New +$440K ﹤0.01% 1780
2021
Q4 		– Sell
-14,315
Closed -$272K – 3120
2021
Q3 		$272K Sell
14,315
-21,733
-60% -$426K ﹤0.01% 2474
2021
Q2 		$726K Buy
+36,048
New +$679K 0.01% 1450
2020
Q3 		– Sell
-11,654
Closed -$261K – 1863
2020
Q2 		$261K Buy
+11,654
New +$213K 0.01% 1044

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

HRT Financial's AMPH Position: Q2 2026 in Review

HRT Financial increased its Amphastar Pharmaceuticals (AMPH) stake by 590% in Q2 2026, buying an estimated $6.68M and bringing the position to 387,530 shares worth $7.82M. The position accounts for 0.01% of the portfolio, ranked #896.

HRT Financial first reported a position in AMPH in Q2 2020 and has held it in 14 quarters since. 212 funds tracked by Wall St. Rank hold AMPH as of Q2 2026.

  • HRT Financial held 387,530 shares of Amphastar Pharmaceuticals worth $7.82M as of Q2 2026.
  • HRT Financial bought 331,349 Amphastar Pharmaceuticals shares in Q2 2026, an estimated $6.68M.
  • Amphastar Pharmaceuticals made up 0.01% of HRT Financial's portfolio in Q2 2026, its #896 holding.
  • HRT Financial first reported a position in Amphastar Pharmaceuticals in Q2 2020 and has held it in 14 quarters since.
  • 212 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q2 2026.

Based on HRT Financial's 13F filing for Q2 2026, filed 14 Aug 2026.