Deerfield Management
Superinvestor profile · Rank #53 by reported 13F value (2026 Q2 filers) · CIK 0001009258 · All profiles
Founded 1994New York City, NYHealthcare-focused investing across public equity, venture capital, private equity and private creditKey person: James Flynn
Reported 13F value
$9.6B
Period 2026-06-30 · Filed 2026-08-14
Positions
82
Top 10 = 53.2% of value
Clone performance
Withheld
Price coverage too low — see note
Latest-quarter activity
13 new · 13 exited
14 increased · 12 decreased
Clone performance withheld for this manager. Only 64.2% of the latest filing's reported value sits inside our price history, and on average 60% of each historical segment's weight is unpriced as well; the rest is mostly non-U.S. listings and small-cap names we cannot price reliably. A clone computed from the priced minority would misrepresent the disclosed portfolio, so we do not publish one. The snapshot, holdings and filing history below are complete as reported. Evidence: filing-by-filing dossier (PDF) · Methodology (PDF)
Top holdings — 2026 Q2 filing
| Ticker | Company | Weight | Reported value |
|---|---|---|---|
| Nuvalent Inc | 22.22% | $2.1B | |
| BKD | Brookdale Sr Living Inc | 6.11% | $586M |
| RVMD | Revolution Medicines Inc | 4.67% | $448M |
| PRAX | Praxis Precision Medicines I | 3.36% | $323M |
| VTRS | Viatris Inc | 3.35% | $321M |
| CNC | Centene Corp Del | 3.28% | $315M |
| RVMD | Revolution Medicines Inc | 2.63% | $252M |
| UTHR | United Therapeutics Corp Del | 2.58% | $248M |
| ARWR | Arrowhead Pharmaceuticals In | 2.51% | $241M |
| LEGN | Legend Biotech Corp | 2.45% | $235M |
As reported on the 2026-06-30 Form 13F (filed 2026-08-14). Full holdings and quarter changes: holdings page.
Filing history in this profile
Every clone input traces to one of these SEC filings. 64.2% of the latest filing's reported value is covered by our price history; the remainder is mostly non-U.S. listings, recent IPOs or delisted names and is excluded from the clone.
Background (founded / HQ / style) source: https://en.wikipedia.org/wiki/Deerfield_Management — Founded in 1994 by Arnold Snider with $17 million; a Tiger Cub firm. James Flynn joined in 2000 and is CEO. Headquarters at 345 Park Avenue South / Cure campus, New York City.