Amphastar Pharmaceutical (amph 2 03/15/29)

13F holders, Q4 2024 (December 31)
6holders +1
2new positions
1sold out
$2.27avg. 13F price*

At the end of Q4 2024, 6 institutions reported holding Amphastar Pharmaceutical (amph 2 03/15/29) in their 13F filings, up 1 from Q3 2024. 2 opened new positions and 1 sold out. The largest holders were Nomura Holdings Inc. ($1.1M), Sei Investments Co. ($287K) and Bank of New York Mellon Corp ($280K).

Company
Amphastar Pharmaceutical (amph 2 03/15/29)
CUSIP
03209RAB9
Latest filing quarter
Q2 2026

History

Number of 13F holders

0246810 Q3 2024: 5Q3 2024Q4 2024: 6Q4 2024Q1 2025: 8Q1 2025Q2 2025: 8Q2 2025Q3 2025: 10Q3 2025Q4 2025: 6Q4 2025Q1 2026: 5Q1 2026Q2 2026: 3Q2 2026

Total Exit/New Position Q3 2024 → Q4 2024

InstitutionsTotal Value
New Positions2$1.2M
Exits1$3K

All 13F filers, Q3 2024 → Q4 2024: 115,765 shares bought and 33,000 shares sold, net +82,765 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 6 holders

Nomura Holdings Inc. 0.01% New 30,765 $1.1M
Sei Investments Co. 0.00% No change 308,000 $287K
Bank of New York Mellon Corp 0.00% No change 300,000 $280K
Cetera Investment Advisers 0.00% New 85,000 $79K
Oppenheimer Asset Management Inc. 0.00% Reduce -8.0% 81,000 $75K
Stephens Inc. 0.00% Reduce -47.9% 25,000 $23K

"% of holder's portfolio" is AMPHASTAR PHARMACEUTICAL (AMPH 2 03/15/29)'s weight in each manager's 13F, not the share of Amphastar Pharmaceutical (amph 2 03/15/29) the manager owns.