Clients
Deerfield Management serves 12 clients. The average client has about $1.59 billion with the firm.
- Pooled investment vehicles12 clients100%
Show client breakdownHide client breakdown
| Client type | Clients | Regulatory AUM | Share | Avg. per client |
|---|---|---|---|---|
| Pooled investment vehicles | 12 | $19,084,042,235 | 100.0% | $1.59B |
| Total | 12 | $19,084,042,235 | 100% | $1.59B |
- Clients
- 12
- Regulatory AUM
- $19,084,042,235
- Share
- 100.0%
- Avg. per client
- $1.59B
Total
- Clients
- 12
- Regulatory AUM
- $19,084,042,235
- Share
- 100%
- Avg. per client
- $1.59B
What it does
Deerfield Management provides portfolio management for pooled vehicles. It is paid through a percentage of assets and performance-based fees.
Deerfield Management advises 12 private funds.
100.0% of assets ($19.08B across 12 accounts) are managed with discretion. 25% of clients are outside the U.S., and 0 clients received advice without assets under management last fiscal year.
Custodians
Deerfield Management has custody of $19.08B for 12 clients.
- All other custodians$19.08B100%
Ownership and leadership
Deerfield Manager Holdings, LP owns 75% or more of Deerfield Management.
- Owns 75% or more of Deerfield Management Company, L.P.
Deerfield Manager Holdings, LP
Control person · since June 2025
- Owns 25% to 50% of Deerfield Manager Holdings, LP
James Flynn
Control person · since June 2025
Deerfield Ugp, LLC
General partner · Control person · since June 2025
Leadership
- James FlynnPresident
- Jonathan IslerChief Financial Officer, Funds
- Bryan SendrowskiChief Financial Officer
- Robert SnetikerGeneral Counsel and Chief Compliance Officer
Staff
- 189 employees
- 89 in advisory functions
Reported holdings
Deerfield Management’s reported 13F holdings total $9.59B across 82 positions, and the ten largest make up 53.2% of it.
- $9.59B
- Reported 13F value
- 82
- Positions
- 53.2%
- In the 10 largest
- +13.1%
- Value vs. prior quarter
- Nuvalent Inc.22.2%
- Brookdale SR Living Inc. · Note 3.500%10/16.1%
- Revolution Medicines Inc.4.7%
- Praxis Precision Medicines I3.4%
- Viatris Inc.3.3%
- Centene Corp. Del3.3%
- Revolution Medicines Inc. · Note 0.500% 5/02.6%
- United Therapeutics Corp. Del2.6%
- Arrowhead Pharmaceuticals IN · Note 1/12.5%
- Legend Biotech Corp. · Sponsored ADS2.5%
Together, the ten largest are 53.2% of reported value.
A 13F covers only exchange-traded long positions the firm holds with discretion, so this $9.59B is not its $19.08B in regulatory assets and does not represent any individual client's portfolio.
Fees
Deerfield Management is paid through a percentage of assets under management and performance-based fees.
Deerfield Management’s fee rates are not included in this profile. Find its brochure on the SEC’s site.
Offices and registrations
Besides its headquarters, Deerfield Management has 1 office, with 2 listed addresses across 2 states.
New Jersey · 1 listed address
- 300 Interpace Parkway (C3), Parsippany
New York · 1 listed address
- 345 Park Avenue South, 12th Floor, New YorkHQ
Other business names
Deerfield Management has reported 2 other business names to the SEC.
- Deerfield Discovery and Development (3DC)
- Deerfield Intelligence
Registration details
- Legal name
- Deerfield Management Company, L.P.
- Headquarters
- 345 Park Avenue South, 12th Floor, New York, NY 10010
- Phone
- 212-551-1600
- Website
- www.deerfield.com
- SEC file
- 801-73284
- Structure
- Delaware limited partnership
- Fiscal year end
- December
This directory does not report disciplinary history, for any firm or individual, in either direction. The SEC publishes the complete record, including any disciplinary events, and it is the authoritative place to check one. See this firm's record on adviserinfo.sec.gov
Common questions
How many clients does Deerfield Management have?
Deerfield Management has 12 clients and manages $19.1 billion for them, as of July 2026.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 31 July 2026
What services does Deerfield Management offer?
Deerfield Management provides portfolio management for pooled vehicles.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
How many financial advisors does Deerfield Management have?
Deerfield Management has 0 investment adviser representatives registered with state securities authorities, out of 189 employees, and 89 perform investment advisory functions. None are registered representatives of a broker-dealer or licensed insurance agents.
Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file
Who owns Deerfield Management?
Deerfield Management is owned through a holding company by James Flynn. Its direct owner is Deerfield Manager Holdings, LP (75% or more).
Source: Form ADV Part 1A, Schedules A and B, filed 31 July 2026
How does Deerfield Management get paid?
Deerfield Management is paid through a percentage of assets under management and performance-based fees. Its Form ADV lists no commissions among how it is paid.
Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file