Wealth manager, independent · LOS Angeles, CA
Signature Investment Advisors, LLC
SEC-registered investment adviser · CRD 160715 · SEC 801-76593
At a glance
Signature Investment Advisors, LLC is an SEC-registered investment adviser based in LOS Angeles, California, with $6.8 billion in regulatory assets under management as of its Form ADV filed August 17, 2026. Its largest client group by assets is individuals, and it reports 7,454 individual clients. By Form ADV it is a wealth manager, ranked 251st of 8,915 wealth managers and 1,737th of 17,210 SEC-registered advisers by assets.
Main office 888-349-3241signatureia.comAs filed on Form ADV
- Regulatory AUM
- $6.8B
- Rank among wealth managers
- #251 of 8,915
- Rank among all SEC RIAs
- #1,737 of 17,210
- Rank in California
- #180 of 1,873
- Individual clients
- 7,454
- High-net-worth clients
- 1,747
- Accounts
- 7,533
- Discretionary
- 90% of AUM
- Employees
- 21
- Advisory staff
- 8
- Offices
- 2
Owners and executives on its Form ADV
- Brian D. HolmesPresident/managing Member
- Eric Z. RosenChief Compliance Officer
- Stephen V MastersonChief Financial Officer
- Matthew J. MatrisianPresident
- Eric Z. RosenChief Operating Officer
- Alex KimDeputy Compliance Officer
Custody and brokerage
Broker-dealer
Hybrid RIA
Signature Investment Advisors, LLC is a hybrid RIA: 10 of its employees are also registered representatives of a broker-dealer. It names an affiliated broker-dealer: Signature Estate Securities, LLC.
- Signature Estate Securities, LLC ↗CRD 18923
It doesn’t hold client accounts or customer funds itself. Its annual audited report filed with the SEC, April 2026
Its Form ADV brochure (filed March 2026) names Signature Estate Securities as the broker-dealer its advisers are registered with.
E 888.349.3241 FACSIMILE 310.855.3955 610 Newport Center Dr SUITE 300 Newport Beach, CA 92660 TELEPHONE 949.705.5188 FACSIMILE 949.691.3065 WWW.SIGNATUREIA.COM Securities offered through Signature Estate Securities, LLC. member FINRA/SIPC.
Who it serves
| Client type | Clients | Regulatory AUM | Share |
|---|---|---|---|
| Individuals | 5,707 | $3.9B | 58% |
| High-net-worth individuals | 1,747 | $2.7B | 40% |
| Corporations or other businesses | 52 | $94M | 1% |
| Pension and profit sharing plans | 24 | $38M | <1% |
| Charitable organizations | – | $15M | <1% |
Disciplinary disclosures
Signature Investment Advisors, LLC 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 businesses and institutions
- Selecting other advisers
- Educational seminars and workshops
How it’s paid
- A percentage of assets under management
Form ADV and brochures on the SEC’s adviser search ↗signatureia.com ↗
AtlasMembers
The full record on Signature Investment Advisors, LLC
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 615 peers of its type and size
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- Owners and executives, with titles and stakes
- 6 namedLocked
- Main office, fax and compliance officer
- Locked
- Filing changes this year, with alerts
- 2Locked
Free while Atlas launches: create a free account and confirm your email. Every figure comes from SEC filings.
Background
Questions
How much does Signature Investment Advisors, LLC manage?
Signature Investment Advisors, LLC reports $6.8 billion in regulatory assets under management across 7,533 accounts, 90% of it on a discretionary basis, on its Form ADV filed August 17, 2026.
What kind of firm is Signature Investment Advisors, LLC?
Signature Investment Advisors, LLC is a wealth manager by its Form ADV answers. At least half of its regulatory assets are managed for individuals and high-net-worth individuals.
Who are Signature Investment Advisors, LLC’s clients?
By assets, its largest client types are individuals ($3.9 billion, 5,707 clients); high-net-worth individuals ($2.7 billion, 1,747 clients); corporations or other businesses ($94 million, 52 clients).
Does Signature Investment Advisors, LLC have any disciplinary history?
Signature Investment Advisors, LLC 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 Signature Investment Advisors, LLC’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 (2026-08-17), 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 →