Broker-dealer firm · New York, NY
Oppenheimer & Co. Inc.
SEC-registered investment adviser · CRD 249 · SEC 801-887
At a glance
Oppenheimer & Co. Inc. is an SEC-registered investment adviser based in New York, New York, with $36.7 billion in regulatory assets under management as of its Form ADV filed September 30, 2026. Its largest client group by assets is individuals, and it reports 37,047 individual clients. By Form ADV it is a broker-dealer firm, ranked 32nd of 391 broker-dealer firms and 555th of 17,210 SEC-registered advisers by assets.
Main office 212-668-8000oppenheimer.comAs filed on Form ADV
- Regulatory AUM
- $37B
- Rank among broker-dealer firms
- #32 of 391
- Rank among all SEC RIAs
- #555 of 17,210
- Rank in New York
- #142 of 2,591
- Individual clients
- 37,047
- High-net-worth clients
- 1,229
- Accounts
- 39,036
- Discretionary
- 39% of AUM
- Employees
- 2,806
- Advisory staff
- 1,219
- Offices
- 110
Owners and executives on its Form ADV
- Albert Grinsfelder LowenthalExecutive Chairman-Director-Owns 100% of Phase II Fin'l
- Dennis Patrick McNamaraE.v.p./clo/secretary
- Robert Steven LowenthalCeo-President-Director
- Peter John GiordanoManaging Director-Chief Administrative Officer
- Edward Patrick HarringtonExecutive Vice President - Private Client Services
- Leon E Molokie JrExecutive Vice President - Chief Operations Officer
- Brad Michael WatkinsDirector-Executive Vice President-Cfo
- Thomas Edward CassidyManaging Director/director
- Dominic Thomas ValentinoChief Compliance Officer
Custody and brokerage
Broker-dealer
Hybrid RIA
Oppenheimer & Co. Inc. is a hybrid RIA: 1,764 of its employees are also registered representatives of a broker-dealer. It names affiliated broker-dealers: Oppenheimer Europe LTD, Oppenheimer Investments Asia Limited and Oppenheimer Israel (opco) LTD.
- Oppenheimer Europe LTD
- Oppenheimer Investments Asia Limited
- Oppenheimer Israel (opco) LTD
Its Form ADV brochure (filed September 2026) names Oppenheimer & Co. as the broker-dealer its advisers are registered with.
In their capacity as registered representatives of Oppenheimer , Financial Advisors may indirectly receive a portion of client commissions paid to Oppenheimer.
Who it serves
| Client type | Clients | Regulatory AUM | Share |
|---|---|---|---|
| Individuals | 35,818 | $17B | 46% |
| Other | 1,214 | $11B | 30% |
| High-net-worth individuals | 1,229 | $5.7B | 16% |
| Corporations or other businesses | 304 | $2.0B | 5% |
| Pension and profit sharing plans | 267 | $460M | 1% |
| Charitable organizations | 191 | $421M | 1% |
| Insurance companies | 12 | $142M | <1% |
| State or municipal government entities | 1 | $0M | <1% |
Disciplinary disclosures
Oppenheimer & Co. Inc. answers yes to 104 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
- Financial planning
- Portfolio management for individuals and small businesses
- Portfolio management for businesses and institutions
- Pension consulting
- Selecting other advisers
How it’s paid
- A percentage of assets under management
- Fixed fees
- Commissions
Form ADV and brochures on the SEC’s adviser search ↗oppenheimer.com ↗
AtlasMembers
The full record on Oppenheimer & Co. Inc.
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 38 peers of its type and size
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- Owners and executives, with titles and stakes
- 9 namedLocked
- Main office, fax and compliance officer
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- Filing changes this year, with alerts
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Free while Atlas launches: create a free account and confirm your email. Every figure comes from SEC filings.
Background
Questions
How much does Oppenheimer & Co. Inc. manage?
Oppenheimer & Co. Inc. reports $36.7 billion in regulatory assets under management across 39,036 accounts, 39% of it on a discretionary basis, on its Form ADV filed September 30, 2026.
What kind of firm is Oppenheimer & Co. Inc.?
Oppenheimer & Co. Inc. is a broker-dealer firm by its Form ADV answers. The firm is itself registered as a broker-dealer as well as an investment adviser. A public reporting company controls it.
Who are Oppenheimer & Co. Inc.’s clients?
By assets, its largest client types are individuals ($16.8 billion, 35,818 clients); other ($11.1 billion, 1,214 clients); high-net-worth individuals ($5.7 billion, 1,229 clients).
Does Oppenheimer & Co. Inc. have any disciplinary history?
Oppenheimer & Co. Inc. answers yes to 104 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 Oppenheimer & Co. Inc.’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 (2026-09-30), 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 →