Sonoma West Advisors
Updated today
Data sourced from SEC public records (and other sources when available). Refreshed weekly • Updated today.
Client assets under management
$215,330,325
This total excludes 3 entity clients. Entities are clients such as corporations, partnerships, or trusts.
Clients
57
100% high-net worth
Advisors
1
of 1 employees
Firm type
Supported
1-3 advisors or $200M+ in AUM
Fewer clients per advisor generally means more personalized, proactive service. Higher ratios may reflect streamlined models or lower minimums.
Clients per advisor
57
TypicalAverage account size
$3,777,725
About
Sonoma West Advisors provides investment management and related financial advisory services to high‑net‑worth individuals, families, associated trusts, charitable organizations and corporate clients. The firm offers discretionary and non‑discretionary portfolio management, consulting, and select financial planning elements such as tax and estate planning support.
The firm follows a long‑term, diversified investment approach, typically allocating client assets to no‑load mutual funds, ETFs, separate account managers and, where appropriate, individual equities, fixed income, closed‑end funds, and private investments; it may use option writing in certain client strategies. Sonoma West combines internal and third‑party research, monitors accounts on a weekly basis, and uses institutional custody and reporting platforms (including Schwab Institutional and an Envestnet client portal) for trade execution and client reporting.
What distinguishes Sonoma West from many peers is the concentration of assets under a very small advisory team: the firm manages roughly $256 million with a single primary advisor, producing an unusually high AUM‑per‑advisor and a relatively small, concentrated client base focused on larger relationships rather than retail/non‑HNW accounts. The firm does not charge performance‑based fees, recently rebranded from DTS Group, and generally leaves proxy voting decisions to clients.
Client services
Financial planning
Portfolio management
Expertise
Options & derivatives strategies
Fee options
Negotiable flat fee arrangements based on the nature of the client’s account
$0 - $2,000,000: 1.00% annually Amounts in excess of $2 million - $5,000,000: 0.85% annually Amounts in excess of $5 million - $10,000,000: 0.75% annually Amounts in excess of $10 million - $20,000,000: 0.50% annually Assets in excess of $20,000,000+: 0.25% annually
$400 per hour for non-discretionary accounts (primarily for individuals)
Account minimum: $10,000,000 (negotiable)
Main office location
Sonoma West Advisors
Santa Rosa CA, United States
Number of offices
1
Most active in
Sonoma West Advisors has reported serving >5 clients in these states in the last 12 months.
California
Disclosures
Firm disclosures are reported in Form ADV Part 1A, Item 11. They include criminal charges, regulatory actions, civil proceedings, and professional disciplinary events involving the firm or its advisory affiliates.
Exclamation point means they have disclosures of this type. Check mark means no disclosures of this type were found.
Business activities & affiliations
These affiliations may expand the services this firm offers and, in some cases, how they are compensated.
Is not active or affiliated with:
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Insurance agent
They sell insurance products and may earn commissions on those sales.
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Broker-dealer / trader
They provide brokerage services and may earn transaction-based compensation in addition to advisory fees.
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Bank
They're affiliated with a bank that may offer its own financial products and services.
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Trust company
They provide trust and estate administration services, typically for separate fees.
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Fund sponsor
They manage or sponsor investment funds and may earn management or performance-based fees if clients invest in them.
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Accountant / CPA / tax prep
They offer tax and accounting services, typically for separate fees.
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Lawyer
They provide legal services, typically billed separately.
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Real estate agent
They facilitate real estate transactions and may earn commissions.
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Other specialized services
They may provide services such as pension consulting or municipal advisory work, typically for separate fees.
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