Steinberg Asset Management, Llc
- Regulatory AUM
- $172M
- Discretionary
- $172M
- Clients
- 30
- Avg AUM / client
- $5.7M
- Accounts
- 50
- Employees
- 5
AUM over time
Reported AUM from Form ADV filings, plotted by filing date · as of Mar 18, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Individuals (non-high net worth) | 6 | $1.2M | 0.67% |
| High net worth individuals | 22 | $138M | 80.2% |
| Pooled investment vehicles (non-investment companies) | 2 | $1.2M | 0.72% |
| Pension and profit sharing plans | Fewer than 5 clients | $2.3M | 1.31% |
| Charitable organizations | Fewer than 5 clients | — | — |
| Other | Fewer than 5 clients | $29.4M | 17.1% |
People (4)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Steinberg, Michael, Alan | Managing Director | Nov 1982 (44y) | ≈ 37.5% – 75% via Steinberg Asset Management Co. Inc. | |
| Feld, Steven, Leon | Managing Director/Chief Compliance Officer/Chief Financial Officer | Jan 2002 (25y) | Less than 5% | |
| Steinberg, Justin, Samuel | Managing Director | Feb 2008 (19y) | Less than 5% | |
| Gruenstein, David | Trustee | Jul 2009 (17y) | GP / trustee / elected manager of The Steinberg Family 2001 Trust (indirect) |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Steinberg Asset Management Co. Inc. | Member | Jan 2002 | A | 75% or more |
| The Steinberg Family 2001 Trust | Shareholder | Dec 2001 | B | ≈ 18.75% – 50% via Steinberg Asset Management Co. Inc. |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Steinberg, Michael, Alan: 50% – 75% of Steinberg Asset Management Co. Inc. × 75% – 100% direct ≈ 37.5% – 75% of the firm
- The Steinberg Family 2001 Trust: 25% – 50% of Steinberg Asset Management Co. Inc. × 75% – 100% direct ≈ 18.75% – 50% of the firm
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.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 03/18/2026 | 1.01 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
- • Performance-based fees
Services
- • Portfolio management for individuals/small businesses
- • Portfolio management for pooled investment vehicles
- • Portfolio management for businesses/institutional clients
Custody
Reported custodians
- Pershing $167M (97% of AUM) Mar 2026
- Morgan Stanley $54.7M (10% of AUM) Mar 2018
- Northern Trust $35.5M (6% of AUM) Dec 2017
- BNY Mellon $30.8M (8% of AUM) Mar 2020
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: Mar 18, 2026.
View current Form ADV (SEC/IAPD) ↗