Qube Research & Technologies (QRT)
AMPH icon

Qube Research & Technologies (QRT)’s Amphastar Pharmaceuticals AMPH Stock Holding History

Qube Research & Technologies (QRT)’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
-111,439
Closed -$2.98M – 3509
2025
Q4 		$2.98M Sell
111,439
-129,773
-54% -$3.34M ﹤0.01% 2054
2025
Q3 		$6.43M Sell
241,212
-228,280
-49% -$5.89M 0.01% 1603
2025
Q2 		$10.8M Buy
469,492
+210,511
+81% +$5.22M 0.01% 1242
2025
Q1 		$7.51M Buy
258,981
+143,689
+125% +$4.59M 0.01% 1306
2024
Q4 		$4.28M Sell
115,292
-1,386
-1% -$63.4K 0.01% 1567
2024
Q3 		$5.66M Sell
116,678
-89,541
-43% -$3.93M 0.01% 1325
2024
Q2 		$8.25M Buy
206,219
+80,384
+64% +$3.33M 0.01% 1013
2024
Q1 		$5.53M Buy
125,835
+70,431
+127% +$3.64M 0.01% 1178
2023
Q4 		$3.43M Sell
55,404
-46,920
-46% -$2.46M 0.01% 1245
2023
Q3 		$4.71M Buy
102,324
+96,167
+1,562% +$5.25M 0.01% 959
2023
Q2 		$354K Buy
+6,157
New +$273K ﹤0.01% 1617
2023
Q1 		– Sell
-61,271
Closed -$1.72M – 2510
2022
Q4 		$1.72M Sell
61,271
-20,521
-25% -$596K 0.01% 1004
2022
Q3 		$2.3M Buy
81,792
+22,559
+38% +$737K 0.01% 872
2022
Q2 		$2.06M Buy
59,233
+10,409
+21% +$371K 0.02% 793
2022
Q1 		$1.75M Buy
+48,824
New +$1.38M 0.01% 865

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

Qube Research & Technologies (QRT)'s AMPH Position: Q1 2026 in Review

Qube Research & Technologies (QRT) sold out of Amphastar Pharmaceuticals (AMPH) in Q1 2026, closing a stake of 111,439 shares — an estimated $2.98M sold.

Qube Research & Technologies (QRT) first reported a position in AMPH in Q1 2022 and held it in 15 quarters. The position peaked at $10.8M in Q2 2025. 215 funds tracked by Wall St. Rank hold AMPH as of Q1 2026.

  • Qube Research & Technologies (QRT) reported no remaining Amphastar Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
  • Qube Research & Technologies (QRT) sold 111,439 Amphastar Pharmaceuticals shares in Q1 2026, an estimated $2.98M.
  • Qube Research & Technologies (QRT) first reported a position in Amphastar Pharmaceuticals in Q1 2022 and held it in 15 quarters.
  • Qube Research & Technologies (QRT)'s Amphastar Pharmaceuticals position peaked at $10.8M in Q2 2025.
  • 215 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q1 2026.

Based on Qube Research & Technologies (QRT)'s 13F filing for Q1 2026, filed 15 May 2026.