Private fund adviser · New York, NY
Deerfield Management Company
Deerfield Management Company, L.P. · SEC-registered investment adviser · CRD 157876 · SEC 801-73284
At a glance
Deerfield Management Company is an SEC-registered investment adviser based in New York, New York, with $19.1 billion in regulatory assets under management as of its Form ADV filed July 31, 2026. Its largest client group by assets is pooled investment vehicles. By Form ADV it is a private fund adviser, ranked 381st of 4,686 private fund advisers and 896th of 17,210 SEC-registered advisers by assets.
Main office 212-551-1600deerfield.comLinkedInAs filed on Form ADV
- Regulatory AUM
- $19B
- Rank among private fund advisers
- #381 of 4,686
- Rank among all SEC RIAs
- #896 of 17,210
- Rank in New York
- #241 of 2,591
- Clients
- 12
- Accounts
- 12
- Discretionary
- 100% of AUM
- Employees
- 189
- Advisory staff
- 89
- Offices
- 2
Owners and executives on its Form ADV
- James E. FlynnPresident
- Jonathan D. IslerChief Financial Officer, Funds
- Bryan S. SendrowskiChief Financial Officer
- Robert T. SnetikerGeneral Counsel and Chief Compliance Officer
Custody and brokerage
Custodian
Deerfield Management Company’s Form ADV lists no custodian for separately managed accounts. Firms report one only when they manage $10 million or more in those accounts.
Who it serves
| Client type | Clients | Regulatory AUM | Share |
|---|---|---|---|
| Pooled investment vehicles | 12 | $19B | 100% |
Private funds
Deerfield Management Company reports 12 private funds with $19B in gross assets: hedge funds, private equity funds (Form ADV Item 7.B).
Disciplinary disclosures
Deerfield Management Company answers yes to 3 disclosure items in Item 11 of Form ADV (criminal, regulatory or civil matters involving the firm or its advisory affiliates). Read the details on the SEC’s adviser search ↗
Services
- Portfolio management for pooled investment vehicles
How it’s paid
- A percentage of assets under management
- Performance-based fees
Form ADV and brochures on the SEC’s adviser search ↗deerfield.com ↗
AtlasMembers
The full record on Deerfield Management Company
Ten years of SEC filings, its owners and contacts, and how it stacks up against its peers. Atlas members see all of it.
- Assets, accounts, clients and staff, ten years of filings
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- Growth over one, three and five years
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- Rank against 688 peers of its type and size
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- Owners and executives, with titles and stakes
- 4 namedLocked
- Main office, fax and compliance officer
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- Filing changes this year, with alerts
- 2Locked
Free while Atlas launches: create a free account and confirm your email. Every figure comes from SEC filings.
Background
Questions
How much does Deerfield Management Company manage?
Deerfield Management Company reports $19.1 billion in regulatory assets under management across 12 accounts, 100% of it on a discretionary basis, on its Form ADV filed July 31, 2026.
What kind of firm is Deerfield Management Company?
Deerfield Management Company is a private fund adviser by its Form ADV answers. Private funds are at least half of its business by assets.
Who are Deerfield Management Company’s clients?
By assets, its largest client types are pooled investment vehicles ($19.1 billion, 12 clients).
Does Deerfield Management Company manage private funds?
Yes. It reports 12 private funds with $19.2 billion in gross assets, including hedge funds, private equity funds.
Does Deerfield Management Company have any disciplinary history?
Deerfield Management Company answers yes to 3 disclosure items in Item 11 of Form ADV, which covers criminal, regulatory and civil matters involving the firm or its advisory affiliates. The details are on the SEC’s adviser search.
Where these numbers come from
Every figure is Deerfield Management Company’s own answer on its latest Form ADV, from the SEC’s registered-adviser list as of October 1, 2026: regulatory assets and accounts (Item 5.F), clients by type (5.D), employees (5.A and 5.B), compensation (5.E) and services (5.G). Custodians come from Schedule D 5.K(3) of its latest filing (2026-07-31), which lists those holding 10% or more of separately managed account assets and the amount at each. “Hybrid” means some employees are also registered representatives of a broker-dealer (Item 5.B(2)); affiliated broker-dealers are the related persons it lists in Item 7.A and Schedule D. Firm type comes from its own answers: broker-dealer firms are registered broker-dealers themselves (Item 6.A); private fund advisers manage mostly private funds (Item 7.B, 5.D); wealth managers manage at least half their assets for individuals (5.D). Ranks compare it by regulatory assets with every SEC-registered adviser and with firms of its type. Figures are as of the firm’s last annual update, so they can lag recent deals and market moves. Regulatory AUM counts assets the firm continuously supervises and can differ from what a firm markets.
Not an endorsement or a recommendation. Before hiring any adviser, read its Form ADV Part 2A brochure and check its record on the SEC’s adviser search. How to check a financial advisor →