Oppenheimer Asset Management Inc.
- Regulatory AUM
- $21.3B
- Discretionary
- $16.3B
- Clients
- 43,537
- Avg AUM / client
- $490K
- Accounts
- 43,537
- Employees
- 129
AUM over time
Annual snapshots from Form ADV filings · as of Jul 01, 2026
Asset allocation (SMA assets by investment type)
as of Jul 01, 2026Share of SMA assets by investment vehicle type, as filed in Form ADV Item 5.K. Dollar figures are percentages applied to total regulatory AUM.
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Individuals (non-high net worth) | 39,766 | $13.1B | 61.5% |
| High net worth individuals | 2,034 | $4.4B | 20.4% |
| Pooled investment vehicles (non-investment companies) | 3 | $82.6M | 0.39% |
| Pension and profit sharing plans | 470 | $401M | 1.88% |
| Charitable organizations | 252 | $760M | 3.56% |
| State or municipal government entities | 6 | $7.0M | 0.03% |
| Corporations and other businesses | 765 | $1.6B | 7.49% |
| Other | 241 | $1.0B | 4.69% |
Retirement plan clients
Plans that reported this firm as an investment service provider on Form 5500 Schedule C.
| Plan | Location | Plan year |
|---|---|---|
| Foley & Lardner Llp Defined Contribution Retirement Plan Foley & Lardner Llp | 2024 |
People (14)
roster as of Jul 20, 2026| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Lowenthal, Albert, Grinsfelder | Chairman/Ceo | Oct 1985 (41y) | 75% or more of Phase Ii Financial Ltd (indirect) | |
| Mcnamara, Dennis, Patrick | Secretary/Director | Jan 2003 (24y) | Less than 5% | |
| Kaback, Deborah | Chief Legal Officer | Jun 2003 (23y) | Less than 5% | |
| Mckigney, Bryan, Edward | President/Director | Apr 2015 (11y) | Less than 5% | |
| Siegel, Douglas, Thornley | Global Compliance Officer | Feb 2016 (11y) | Less than 5% | |
| Robert Steven Lowenthal | Director | Apr 2018 (8y) | Less than 5% | |
| Montuschi, Mark, Ercole | Chief Operations Officer | Mar 2020 (6y) | Less than 5% | |
| Brian Alan Roth | Ia Cco | Mar 2021 (5y) | Less than 5% | |
| Watkins, Brad, Michael | Senior Vice President Cfo | Aug 2022 (4y) | Less than 5% | |
| Peter Michael Cadaret | Registered representative | Aug 2005 (21y) | ||
| Leo John Dierckman | Registered representative | Jan 2007 (20y) | ||
| Michael Dewayne Richman | Registered representative | CFA | Jan 2007 (20y) | |
| Elizabeth Cicolello Messina | Registered representative | Jan 2026 (1y) | ||
| Maurice Gordon Stuffmann | Registered representative | Jan 2026 (1y) |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| E.A. Viner International Co. | Direct Parent | Oct 1986 | A | 75% or more |
| Oppenheimer Holdings Inc | Ultimate Parent | Oct 1983 | B | 75% or more of Ea Viner International Co (indirect) |
| Phase Ii Financial Ltd | Holding Company | Oct 1985 | B | 50% – 75% of Oppenheimer Holdings Inc (indirect) |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Retirement plans served (1)
| Plan | Sponsor | Participants | Plan assets | As of |
|---|---|---|---|---|
| Foley & Lardner Llp Defined Contribution Retirement Plan | Foley & Lardner Llp | 2,109 | $1.7B | 02/01/2024 |
From Form 5500 service-provider disclosures.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 07/01/2026 | 2.48 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
Allegations: WITHOUT ADMITTING OR DENYING THE FINDINGS, THE FIRM CONSENTED TO THE SANCTIONS AND TO THE ENTRY OF FINDINGS THAT IT VIOLATED NYSE ARCA RULE 11.1(B). THE FINDINGS STATED THAT THE FIRM FAILED TO OBTAIN THE MOST ADVANTAGEOUS TERMS FOR A CUSTOMER OPTIONS ORDER, AND ALSO FAILED TO OBTAIN THE AGREEMENT OF ITS CUSTOMER PRIOR TO INSTRUCTING THE FLOOR BROKER TO NULLIFY AND ADJUST THE TRADE. THE FINDINGS ALSO STATED THAT THE FIRM FAILED TO ESTABLISH AND MAINTAIN SUPERVISORY SYSTEMS AND WRITTEN SUPERVISORY PROCEDURES (WSPS) REASONABLY DESIGNED TO ENSURE COMPLIANCE WITH ITS OBLIGATIONS FOR CERTAIN CUSTOMER OPTIONS ORDERS. THE FIRM DID NOT HAVE POLICIES OR PROCEDURES IN PLACE REGARDING ITS OBLIGATIONS FOR THE HANDLING OF NOT-HELD ORDERS, INCLUDING WITH RESPECT TO TRADE NULLIFICATION. ACCORDINGLY, THE FIRM VIOLATED NYSE ARCA RULES 11.18(B) AND (C). Status: Final Sanction Detail: THE FIRM WAS CENSURED AND FINED $90,000. IN CONNECTION WITH NYSE REGULATION'S INVESTIGATION, THE FIRM OFFERED THE CUSTOMER RESTITUTION IN THE AMOUNT OF $25,400. Summary: WITHOUT ADMITTING OR DENYING THE FINDINGS, THE FIRM CONSENTED TO THE SANCTIONS AND TO THE ENTRY OF FINDINGS THAT IT VIOLATED NYSE ARCA RULE 11.1(B). THE FINDINGS STATED THAT THE FIRM FAILED TO OBTAIN THE MOST ADVANTAGEOUS TERMS FOR A CUSTOMER OPTIONS ORDER, AND ALSO FAILED TO OBTAIN THE AGREEMENT OF ITS CUSTOMER PRIOR TO INSTRUCTING THE FLOOR BROKER TO NULLIFY AND ADJUST THE TRADE. THE FINDINGS ALSO STATED THAT THE FIRM FAILED TO ESTABLISH AND MAINTAIN SUPERVISORY SYSTEMS AND WRITTEN SUPERVISORY PROCEDURES (WSPS) REASONABLY DESIGNED TO ENSURE COMPLIANCE WITH ITS OBLIGATIONS FOR CERTAIN CUSTOMER OPTIONS ORDERS. THE FIRM DID NOT HAVE POLICIES OR PROCEDURES IN PLACE REGARDING ITS OBLIGATIONS FOR THE HANDLING OF NOT-HELD ORDERS, INCLUDING WITH RESPECT TO TRADE NULLIFICATION. ACCORDINGLY, THE FIRM VIOLATED NYSE ARCA RULES 11.18(B) AND (C). THE FIRM WAS CENSURED AND FINED $90,000. IN CONNECTION WITH NYSE REGULATION'S INVESTIGATION, THE FIRM OFFERED THE CUSTOMER RESTITUTION IN THE AMOUNT OF $25,400.
Allegations: SEC ADMIN RELEASE IA 5137, MARCH 11, 2019: THE SECURITIES AND EXCHANGE COMMISSION DEEMS IT APPROPRIATE AND IN THE PUBLIC INTEREST THAT PUBLIC ADMINISTRATIVE AND CEASE-AND-DESIST PROCEEDINGS BE INSTITUTED AGAINST OPPENHEIMER & CO. INC. AND ITS AFFILIATE OPPENHEIMER ASSET MANAGEMENT INC. (TOGETHER, "RESPONDENTS"). ON THE BASIS OF THIS ORDER AND RESPONDENTS' OFFERS, THE COMMISSION FINDS THAT THESE PROCEEDINGS ARISE OUT OF BREACHES OF FIDUCIARY DUTY AND INADEQUATE DISCLOSURES BY THE RESPONDENTS IN CONNECTION WITH THEIR MUTUAL FUND SHARE CLASS SELECTION PRACTICES AND THE FEES IT RECEIVED. AT TIMES DURING THE RELEVANT PERIOD, RESPONDENTS PURCHASED, RECOMMENDED, OR HELD FOR ADVISORY CLIENTS MUTUAL FUND SHARE CLASSES THAT CHARGED 12B-1 FEES INSTEAD OF LOWER-COST SHARE CLASSES OF THE SAME FUNDS FOR WHICH THE CLIENTS WERE ELIGIBLE. RESPONDENTS RECEIVED 12B-1 FEES IN CONNECTION WITH THESE INVESTMENTS. RESPONDENTS FAILED TO DISCLOSE IN THEIR FORM ADV OR OTHERWISE THE CONFLICTS OF INTEREST RELATED TO (A) THEIR RECEIPT OF 12B-1 FEES, AND/OR (B) THEIR SELECTION OF MUTUAL FUND SHARE CLASSES THAT PAY SUCH FEES. DURING THE RELEVANT PERIOD, RESPONDENTS RECEIVED 12B-1 FEES FOR ADVISING CLIENTS TO INVEST IN OR HOLD SUCH MUTUAL FUND SHARE CLASSES. AS A RESULT OF THE CONDUCT, RESPONDENTS WILLFULLY VIOLATED SECTIONS 206(2) AND 207 OF THE ADVISERS ACT. Status: Final Sanction Detail: THE RESPONDENTS SHALL CEASE AND DESIST FROM COMMITTING OR CAUSING ANY VIOLATIONS AND ANY FUTURE VIOLATIONS OF SECTIONS 206(2) AND 207 OF THE ADVISERS ACT. RESPONDENTS ARE CENSURED, SHALL, JOINTLY AND SEVERALLY, PAY DISGORGEMENT OF $3,169,123 AND PREJUDGMENT INTEREST OF $359,254, AND SHALL COMPLY WITH THE UNDERTAKINGS ENUMERATED IN THE OFFER OF SETTLEMENT. Summary: RESPONDENTS HAVE SUBMITTED AN OFFER OF SETTLEMENT WHICH THE COMMISSION HAS DETERMINED TO ACCEPT. IN VIEW OF THE FOREGOING, THE COMMISSION DEEMS IT APPROPRIATE IN THE PUBLIC INTEREST TO IMPOSE THE SANCTIONS AGREED TO IN THE RESPONDENTS' OFFERS. RESPONDENTS SELF-REPORTED TO THE COMMISSION THE VIOLATIONS DISCUSSED IN THIS ORDER PURSUANT TO THE DIVISION OF ENFORCEMENT'S SHARE CLASS SELECTION DISCLOSURE INITIATIVE ("SCSD INITIATIVE"). ACCORDINGLY, THIS ORDER AND RESPONDENTS' OFFERS ARE BASED ON THE INFORMATION SELF-REPORTED BY RESPONDENTS.
Disclosure text reproduced verbatim from the firm's own Form ADV filings.
How they charge
- • Percentage of assets under management
- • Fixed fees
Services
- • Portfolio management for individuals/small businesses
- • Portfolio management for pooled investment vehicles
- • Portfolio management for businesses/institutional clients
- • Selection of other advisers
- • Publication of periodicals or newsletters
Custody
Reported custodians
- Oppenheimer & Co. Inc. $21.2B (99% of AUM) Jul 2026
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports it does not have custody of client funds or securities (Item 9.A).
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Jul 01, 2026.
View current Form ADV (SEC/IAPD) ↗