# AMPHASTAR PHARMACEUTICALS IN NOTE 2.000% 3/1

AMPHASTAR PHARMACEUTICALS IN NOTE 2.000% 3/1 is a security (CUSIP 03209RAB9) tracked across SEC portfolio filings. 38 institutional managers reported $328.3M on Form 13F as of 2026-06-30; 3 registered fund positions totaling $15.6M via N-PORT as of 2026-04-30.

## Summary

- Issuer: AMPHASTAR PHARMACEUTICALS IN
- Class: NOTE 2.000% 3/1
- CUSIP: 03209RAB9
- Asset category: DBT
- 13F holders: 38
- 13F value: $328.3M
- 13F period: 2026-06-30
- N-PORT fund positions: 3
- N-PORT value: $15.6M
- N-PORT report: 2026-04-30

## Top institutional holders (Form 13F)

_Showing 15 of 38 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| Context Capital Management, LLC | LAJOLLA, CA | $85.2M | 93,631,000 |
| Linden Advisors LP | New York, NY | $84.6M | 93,574,000 |
| CAMDEN ASSET MANAGEMENT L P /CA | Los Angeles, CA | $37.8M | 41,827,000 |
| OAKTREE CAPITAL MANAGEMENT LP | LOS ANGELES, CA | $34.5M | 38,036,000 |
| Wellesley Asset Management | WELLESLEY, MA | $23.6M | 26,026,000 |
| [Empyrean Capital Partners, LP](https://search.stillhousedata.com/firm/138978) | LOS ANGELES, CA | $18.2M | 20,265,000 |
| MORGAN STANLEY | NEW YORK, NY | $6.0M | 6,600,000 |
| Russell Investments Group, Ltd. | Seattle, WA | $5.5M | 6,007,000 |
| BlackRock, Inc. | New York, NY | $5.0M | 5,525,000 |
| [Chicago Capital Management, LLC](https://search.stillhousedata.com/firm/175453) | CHICAGO, IL | $5.0M | 5,440 |
| [SILVERBACK ASSET MANAGEMENT LLC](https://search.stillhousedata.com/firm/141407) | CHAPEL HILL, NC | $4.6M | 5,080,000 |
| [Calamos Advisors LLC](https://search.stillhousedata.com/firm/105758) | NAPERVILLE, IL | $4.5M | 5,000,000 |
| ADVENT CAPITAL MANAGEMENT /DE/ | NEW YORK, NY | $3.7M | 4,055,000 |
| FMR LLC | BOSTON, MA | $3.4M | 3,803,000 |
| Pinnacle Holdings, LLC | TULSA, OK | $1.9M | 2,055,000 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Calamos Market Neutral Income Fund](https://search.stillhousedata.com/fund/S000004062) | CALAMOS INVESTMENT TRUST/IL | $9.1M | 5.18% |
| [Miller Convertible Bond Fund](https://search.stillhousedata.com/fund/S000020099) | Miller Investment Trust | $3.8M | 101.91% |
| [Global Opportunities Portfolio](https://search.stillhousedata.com/fund/S000027417) | Global Opportunities Portfolio | $2.7M | 1.98% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/03209rab9.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.