Quadrature Capital’s Amphastar Pharmaceuticals AMPH Stock Holding History

Quadrature Capital’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	$599K	Buy	+30,561	New	+$748K	0.01%	732

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

Quadrature Capital's AMPH Position: Q1 2026 in Review

Quadrature Capital opened a new position in Amphastar Pharmaceuticals (AMPH) in Q1 2026: 30,561 shares worth $599K. The stake represents 0.01% of the portfolio and ranks #732 among its holdings.

215 funds tracked by Wall St. Rank hold AMPH as of Q1 2026.

Quadrature Capital held 30,561 shares of Amphastar Pharmaceuticals worth $599K as of Q1 2026.
Amphastar Pharmaceuticals was a new Quadrature Capital position in Q1 2026.
Amphastar Pharmaceuticals made up 0.01% of Quadrature Capital's portfolio in Q1 2026, its #732 holding.
215 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q1 2026.

Based on Quadrature Capital's 13F filing for Q1 2026, filed 15 May 2026.