INTECH Investment Management’s Amphastar Pharmaceuticals AMPH Stock Holding History

INTECH Investment 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 Q1	$474K	Sell	24,207 -39,025	-62%	-$955K	﹤0.01%	1353
2025 Q4	$1.69M	Buy	63,232 +12,072	+24%	+$311K	0.02%	823
2025 Q3	$1.36M	Buy	51,160 +89	+0.2%	+$2.3K	0.01%	1006
2025 Q2	$1.17M	Sell	51,071 -9,218	-15%	-$229K	0.01%	1107
2025 Q1	$1.75M	Buy	60,289 +18,133	+43%	+$579K	0.02%	841
2024 Q4	$1.57M	Buy	42,156 +29,167	+225%	+$1.33M	0.02%	859
2024 Q3	$630K	Buy	12,989 +2,331	+22%	+$102K	0.01%	1097
2024 Q2	$426K	Buy	+10,658	New	+$442K	0.01%	856

Other funds holding AMPH

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

TD Asset Management Toronto, Ontario, Canada $123B AUM 34.51% 1-Year Est. Return

Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return

Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

BTW

Boston Trust Walden Boston, Massachusetts $12.2B AUM 12.45% 1-Year Est. Return

INTECH Investment Management's AMPH Position: Q1 2026 in Review

INTECH Investment Management reduced its Amphastar Pharmaceuticals (AMPH) stake by 62% in Q1 2026, selling an estimated $955K and leaving 24,207 shares worth $474K. The position accounts for ﹤0.01% of the portfolio, ranked #1353.

INTECH Investment Management first reported a position in AMPH in Q2 2024 and has held it in 8 quarters since. The position peaked at $1.75M in Q1 2025. 215 funds tracked by Wall St. Rank hold AMPH as of Q1 2026.

INTECH Investment Management held 24,207 shares of Amphastar Pharmaceuticals worth $474K as of Q1 2026.
INTECH Investment Management sold 39,025 Amphastar Pharmaceuticals shares in Q1 2026, an estimated $955K.
Amphastar Pharmaceuticals made up ﹤0.01% of INTECH Investment Management's portfolio in Q1 2026, its #1353 holding.
INTECH Investment Management first reported a position in Amphastar Pharmaceuticals in Q2 2024 and has held it in 8 quarters since.
INTECH Investment Management's Amphastar Pharmaceuticals position peaked at $1.75M in Q1 2025.
215 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q1 2026.

Based on INTECH Investment Management's 13F filing for Q1 2026, filed 8 May 2026.