Athyrium Capital Management LP is an SEC-registered investment adviser based in New York, NY that reports managing 7 hedge funds on Form ADV. It reports $2.5 billion in regulatory assets under management. Its private funds, of all types, hold $2.5 billion in gross assets. Over a longer period they returned an estimated -23.1% from Q3 2024 to Q3 2024, compared with +5.4% for the S&P 500, based on 13F filings.
- Regulatory assets under management
- $2.5 billionForm ADV Item 5.F
- Gross assets of private funds
- $2.5 billionAll private fund types, Form ADV
- Hedge funds managed
- 78 private funds in total
- Employees
- 20Form ADV Item 5.A
- Registration
- SEC-registered adviserCRD 161528
- Latest Form ADV
- 09/08/2026Disciplinary disclosures: none reported
Estimated 13F portfolio performance
| Quarter | Est. 13F return | S&P 500 |
|---|---|---|
| Q3 2024 | -23.1% | +5.4% |
Estimate of the firm's disclosed long U.S. stock portfolio from its quarterly 13F filings, holding each quarter-end portfolio to the next quarter-end at prices implied by all 13F filers. It is a price return before dividends and fees, ignores shorts, options, bonds, cash and trading within the quarter, and is not the return of any fund. Disclosures
Largest disclosed holdings
- 74319f305$5.5 million
- Puma Biotechnology Inc$3.2 million
As of 2024-09-30, from 13F filing by Athyrium Capital Management, LP.
From SEC filings. Firm data comes from the SEC's Form ADV data as of Oct 2, 2026; performance estimates come from Form 13F. HedgeMountain has not verified this information, and it is not an offer, solicitation or recommendation. Full disclosures