American Century Companies’s Amphastar Pharmaceuticals AMPH Stock Holding History
Bought
Maintained
Sold
Other funds holding AMPH
American Century Companies's AMPH Position: Q2 2026 in Review
American Century Companies increased its Amphastar Pharmaceuticals (AMPH) stake by 16% in Q2 2026, buying an estimated $3.21M and bringing the position to 1,176,626 shares worth $23.7M. The position accounts for 0.01% of the portfolio, ranked #1212.
American Century Companies first reported a position in AMPH in Q2 2016 and has held it in 22 quarters since. The position peaked at $31M in Q3 2024. 210 funds tracked by Wall St. Rank hold AMPH as of Q2 2026.
- American Century Companies held 1,176,626 shares of Amphastar Pharmaceuticals worth $23.7M as of Q2 2026.
- American Century Companies bought 159,088 Amphastar Pharmaceuticals shares in Q2 2026, an estimated $3.21M.
- Amphastar Pharmaceuticals made up 0.01% of American Century Companies's portfolio in Q2 2026, its #1212 holding.
- American Century Companies first reported a position in Amphastar Pharmaceuticals in Q2 2016 and has held it in 22 quarters since.
- American Century Companies's Amphastar Pharmaceuticals position peaked at $31M in Q3 2024.
- 210 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q2 2026.
Based on American Century Companies's 13F filing for Q2 2026, filed 12 Aug 2026.