Brevan Howard Capital Management’s Amphastar Pharmaceuticals AMPH Stock Holding History

Brevan Howard Capital Management’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	$690K	Buy	34,201 +22,587	+194%	+$456K	0.01%	1267
2026 Q1	$228K	Sell	11,614 -8,851	-43%	-$217K	﹤0.01%	1814
2025 Q4	$548K	Buy	20,465 +6,976	+52%	+$180K	0.01%	1062
2025 Q3	$359K	Sell	13,489 -35,431	-72%	-$915K	﹤0.01%	1464
2025 Q2	$1.12M	Buy	48,920 +40,335	+470%	+$1M	0.01%	1009
2025 Q1	$249K	Buy	8,585 +1,680	+24%	+$53.7K	﹤0.01%	916
2024 Q4	$256K	Buy	+6,905	New	+$316K	﹤0.01%	832
2024 Q2	–	Sell	-5,514	Closed	-$242K	–	1044
2024 Q1	$242K	Buy	+5,514	New	+$285K	﹤0.01%	729

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 $3.38T AUM 44.17% 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

Brevan Howard Capital Management's AMPH Position: Q2 2026 in Review

Brevan Howard Capital Management increased its Amphastar Pharmaceuticals (AMPH) stake by 194% in Q2 2026, buying an estimated $456K and bringing the position to 34,201 shares worth $690K. The position accounts for 0.01% of the portfolio, ranked #1267.

Brevan Howard Capital Management first reported a position in AMPH in Q1 2024 and has held it in 8 quarters since. The position peaked at $1.12M in Q2 2025. 211 funds tracked by Wall St. Rank hold AMPH as of Q2 2026.

Brevan Howard Capital Management held 34,201 shares of Amphastar Pharmaceuticals worth $690K as of Q2 2026.
Brevan Howard Capital Management bought 22,587 Amphastar Pharmaceuticals shares in Q2 2026, an estimated $456K.
Amphastar Pharmaceuticals made up 0.01% of Brevan Howard Capital Management's portfolio in Q2 2026, its #1267 holding.
Brevan Howard Capital Management first reported a position in Amphastar Pharmaceuticals in Q1 2024 and has held it in 8 quarters since.
Brevan Howard Capital Management's Amphastar Pharmaceuticals position peaked at $1.12M in Q2 2025.
211 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q2 2026.

Based on Brevan Howard Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.