AUMdb
BA

Bmb Advisers Llc

SEC-registered Multi-Family Office · Small ($100M–$1B) CRD 118410 · SEC file 801-61120 · Los Angeles, CA
☆ Save with Pro ADV data as of Mar 29, 2026
Regulatory AUM
$656M
Discretionary
$656M
Clients
34
Avg AUM / client
$19.3M
Accounts
71
Employees
3

AUM over time

$235M $656M
Dec 2011 Dec 2025

Annual snapshots from Form ADV filings · as of Mar 29, 2026

Who they serve

Client typeClientsAUM% of AUM
High net worth individuals 30 $611M 93.1%
Pension and profit sharing plans 2 $2.7M 0.41%
Charitable organizations 2 $42.4M 6.46%

People (3)

roster as of Jul 20, 2026
NameRole / titleCredentialsWith firm sinceOwnership
Debra Joan Bonseigneur Member Mar 1999 (27y) 10% – 25%
Stephen Michalski Member/Chief Compliance Officer Mar 1999 (27y) 10% – 25%
William Charles Broder Managing Member Mar 1999 (27y) 50% – 75%

Undisclosed: 0% – 30% 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.

Documents (1 archived)

FormPeriodSize
Form ADV (full filing) 03/29/2026 1.04 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
  • Fixed fees

Services

  • Portfolio management for individuals/small businesses
  • Pension consulting services
  • Selection of other advisers

Custody

Reported custodians

Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).

Firm reports having 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 29, 2026.

View current Form ADV (SEC/IAPD) ↗