Vanguard Asset Management
AMPH icon

Vanguard Asset Management’s Amphastar Pharmaceuticals AMPH Stock Holding History

Vanguard Asset 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
Q3 		$595K Hold
23,052
– – ﹤0.01% 2103
2026
Q2 		$465K Hold
23,052
– – ﹤0.01% 2209
2026
Q1 		$452K Buy
+23,052
New +$564K ﹤0.01% 2144

Other funds holding AMPH

BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $229B AUM 33.35% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
Marshall Wace
Marshall Wace London, United Kingdom $114B AUM 35.47% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $33.9B AUM 47.7% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM
LSV Asset Management
LSV Asset Management Chicago, Illinois $54.1B AUM 39.29% 1-Year Est. Return

Vanguard Asset Management's AMPH Position: Q3 2026 in Review

Vanguard Asset Management held its Amphastar Pharmaceuticals (AMPH) position steady in Q3 2026 at 23,052 shares worth $595K. The position accounts for ﹤0.01% of the portfolio, ranked #2103.

Vanguard Asset Management first reported a position in AMPH in Q1 2026 and has held it in 3 quarters since. 175 funds tracked by Wall St. Rank hold AMPH as of Q3 2026.

  • Vanguard Asset Management held 23,052 shares of Amphastar Pharmaceuticals worth $595K as of Q3 2026.
  • Vanguard Asset Management left its Amphastar Pharmaceuticals share count unchanged in Q3 2026.
  • Amphastar Pharmaceuticals made up ﹤0.01% of Vanguard Asset Management's portfolio in Q3 2026, its #2103 holding.
  • Vanguard Asset Management first reported a position in Amphastar Pharmaceuticals in Q1 2026 and has held it in 3 quarters since.
  • 175 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q3 2026.

Based on Vanguard Asset Management's 13F filing for Q3 2026, filed 13 Nov 2026.