Institutional Ownership
Amphastar Pharmaceuticals In
CUSIP 03209RAB9NOTE 2.000% 3/1AMPH.2.03/15/29Q1 2026
13D / 13G Filings
0
Schedule 13D/13G on record
Beneficial Filers
0
Distinct reporting persons
Largest Stake
—
Max % of class reported
Institutional Holders
5
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
Schedule 13D (activist) & 13G (passive) 5%+ ownership filings
No 13D/13G filings on record yet
Schedule 13D/13G beneficial-ownership filings from 2020–present are ingested from SEC EDGAR. Coverage expands as the backfill and daily crawler run.
Top Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Ssi Investment Management LLC | 358.0K | $323.5K |
| 2 | Bank Of New York Mellon Corp | 300.0K | $272.2K |
| 3 | Financial Sense Advisors, Inc. | 220.0K | $199.0K |
| 4 | Cetera Investment Advisers | 111.0K | $100.3K |
| 5 | Choreo, LLC | 37.0K | $33.5K |