Asset manager · New York, NY
Ruane Cunniff L.P.
Ruane, Cunniff & Goldfarb L.P. · SEC-registered investment adviser · CRD 285971 · SEC 801-111872
At a glance
Ruane Cunniff L.P. is an SEC-registered investment adviser based in New York, New York, with $10.5 billion in regulatory assets under management as of its Form ADV filed March 31, 2026. Its largest client group by assets is high-net-worth individuals, and it reports 1,138 individual clients. By Form ADV it is a asset manager, ranked 504th of 3,218 asset managers and 1,319th of 17,210 SEC-registered advisers by assets.
Main office 212-832-5280ruanecunniff.comLinkedInAs filed on Form ADV
- Regulatory AUM
- $11B
- Rank among asset managers
- #504 of 3,218
- Rank among all SEC RIAs
- #1,319 of 17,210
- Rank in New York
- #342 of 2,591
- Individual clients
- 1,138
- High-net-worth clients
- 1,138
- Accounts
- 1,213
- Discretionary
- 100% of AUM
- Employees
- 52
- Advisory staff
- 12
- Offices
- 2
Owners and executives on its Form ADV
- John B. HarrisManaging Director
- Patrick L. DennisChief Financial Officer
- Yau Dun Lee-CotoiaChief Compliance Officer
- JENNIFER E RuskChief Operating Officer
- Michael G BenwittGeneral Counsel
Custody and brokerage
Broker-dealer
Hybrid RIA
Ruane Cunniff L.P. is a hybrid RIA: 2 of its employees are also registered representatives of a broker-dealer.
Form ADV Part 1 doesn’t name an unaffiliated broker-dealer. The firm’s Part 2A brochure (Item 10) and each adviser’s record on the SEC’s adviser search do.
Who it serves
| Client type | Clients | Regulatory AUM | Share |
|---|---|---|---|
| High-net-worth individuals | 1,138 | $3.9B | 37% |
| Investment companies | 1 | $3.8B | 36% |
| Pension and profit sharing plans | 11 | $1.8B | 17% |
| Charitable organizations | 31 | $729M | 7% |
| Corporations or other businesses | 32 | $259M | 2% |
Disciplinary disclosures
Ruane Cunniff L.P. reports no disciplinary disclosures in Item 11 of Form ADV. Read the details on the SEC’s adviser search ↗
Services
- Portfolio management for individuals and small businesses
- Portfolio management for investment companies
- Portfolio management for businesses and institutions
How it’s paid
- A percentage of assets under management
Form ADV and brochures on the SEC’s adviser search ↗ruanecunniff.com ↗
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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, 8 years of filings
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Background
Questions
How much does Ruane Cunniff L.P. manage?
Ruane Cunniff L.P. reports $10.5 billion in regulatory assets under management across 1,213 accounts, 100% of it on a discretionary basis, on its Form ADV filed March 31, 2026.
What kind of firm is Ruane Cunniff L.P.?
Ruane Cunniff L.P. is a asset manager by its Form ADV answers. Most of its assets are managed for funds, institutions or other businesses rather than individuals.
Who are Ruane Cunniff L.P.’s clients?
By assets, its largest client types are high-net-worth individuals ($3.9 billion, 1,138 clients); investment companies ($3.8 billion, 1 clients); pension and profit sharing plans ($1.8 billion, 11 clients).
Does Ruane Cunniff L.P. have any disciplinary history?
Ruane Cunniff L.P. reports no disciplinary disclosures in Item 11 of its Form ADV. Check the SEC’s adviser search for the latest record.
Where these numbers come from
Every figure is Ruane Cunniff L.P.’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 (2026-03-31), 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 →