Jump Financial’s Amphastar Pharmaceuticals AMPH Stock Holding History

Jump 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	$1.15M	Buy	+56,781	New	+$1.15M	0.01%	1122
2026 Q1	–	Sell	-7,800	Closed	-$209K	–	1853
2025 Q4	$209K	Buy	+7,800	New	+$201K	﹤0.01%	1729
2025 Q3	–	Sell	-63,334	Closed	-$1.45M	–	1763
2025 Q2	$1.45M	Buy	+63,334	New	+$1.57M	0.02%	829
2023 Q4	–	Sell	-37,276	Closed	-$1.71M	–	1753
2023 Q3	$1.71M	Buy	+37,276	New	+$2.03M	0.06%	435
2022 Q2	–	Sell	-51,304	Closed	-$1.84M	–	1589
2022 Q1	$1.84M	Buy	51,304 +22,504	+78%	+$638K	0.08%	314
2021 Q4	$671K	Buy	28,800 +4,800	+20%	+$98.2K	0.04%	527
2021 Q3	$456K	Sell	24,000 -13,700	-36%	-$268K	0.03%	508
2021 Q2	$760K	Buy	+37,700	New	+$710K	0.07%	339

Other funds holding AMPH

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Jump Financial's AMPH Position: Q2 2026 in Review

Jump Financial opened a new position in Amphastar Pharmaceuticals (AMPH) in Q2 2026: 56,781 shares worth $1.15M. The stake represents 0.01% of the portfolio and ranks #1122 among its holdings. This is a return to the name: Jump Financial previously reported a position in AMPH as recently as Q4 2025.

Jump Financial first reported a position in AMPH in Q2 2021 and has held it in 8 quarters since. The position peaked at $1.84M in Q1 2022. 211 funds tracked by Wall St. Rank hold AMPH as of Q2 2026.

Jump Financial held 56,781 shares of Amphastar Pharmaceuticals worth $1.15M as of Q2 2026.
Amphastar Pharmaceuticals was a new Jump Financial position in Q2 2026.
Amphastar Pharmaceuticals made up 0.01% of Jump Financial's portfolio in Q2 2026, its #1122 holding.
Jump Financial first reported a position in Amphastar Pharmaceuticals in Q2 2021 and has held it in 8 quarters since.
Jump Financial's Amphastar Pharmaceuticals position peaked at $1.84M in Q1 2022.
211 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q2 2026.

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