Plum Street Advisors provides financial planning, portfolio management for individuals and small businesses, portfolio management for institutions, selecting other managers, education planning, estate planning, insurance, and retirement plan services. Financial planning was provided to 101–250 clients last fiscal year.
Plum Street Advisors reports 183 clients. They include 110 individual clients, 65 high-net-worth individuals and 8 charitable organizations. Of its assets, 100.0% ($463M across 616 accounts) are managed with discretion. Of its clients, 2% are outside the U.S. It advised 2 clients without assets under management last fiscal year.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 60% | 20% |
| High-net-worth individuals | 36% | 72% |
| Charitable organizations | 4% | 8% |
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 110 | $93.4M | 20.2% | $850K |
| High-net-worth individuals | 65 | $333M | 71.9% | $5.12M |
| Charitable organizations | 8 | $36.5M | 7.9% | $4.56M |
| Total | 183 | $463M | 100% | $2.53M |
- Clients
- 110
- Regulatory AUM
- $93.4M
- AUM share
- 20.2%
- Avg. per client
- $850K
- Clients
- 65
- Regulatory AUM
- $333M
- AUM share
- 71.9%
- Avg. per client
- $5.12M
- Clients
- 8
- Regulatory AUM
- $36.5M
- AUM share
- 7.9%
- Avg. per client
- $4.56M
Total
- Clients
- 183
- Regulatory AUM
- $463M
- AUM share
- 100%
- Avg. per client
- $2.53M
- Clients outside the U.S.
- 2%
- Clients advised without assets under management last fiscal year
- 2
- Private funds advised
- 0
- Financial planning clients last fiscal year
- 101–250
Plum Street Advisors charges 0.20%–0.90% a year for its Combined Financial Planning and Portfolio Management. Each asset band is charged at its own rate. The brochure also prices one other service, listed under fee details.
| Asset band | Annual rate |
|---|---|
| $0–$1M | 0.90% |
| $1M–$2M | 0.70% |
| $2M–$5M | 0.50% |
| $5M–$10M | 0.30% |
| $10M and above | 0.20% |
Fee details and sources
Other fees
- Retirement plan advisory services
- Billed at an annual rate of up to 1.00% of plan assets, negotiable and set in the plan advisory agreement.
James Osborn owns 50% to 75% of Plum Street Advisors. The leadership team of Plum Street Advisors includes Chief Compliance Officer David Dirks. It has 8 employees, 5 of them in advisory roles.
Staff
- 8 employees
- 5 in advisory functions
- 5 state-registered reps
- Owns 50% to 75% of Plum Street Advisors, LLC
James Osborn
Control person · since May 2016
- Owns 50% to 75% of Plum Street Advisors, LLC
David Dirks
Control person · since November 2016
Plum Street Advisors’ regulatory assets grew 4.4× from $105M (July 2021) to $463M (June 2026); clients rose from 70 to 183 and employees from 4 to 8.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | StaffEmployees | Offices |
|---|---|---|---|---|
| Jun 2026June 2026 | $463M | 183 | 8 | 5 |
| Mar 2025March 2025 | $359M | 170 | 7 | 4 |
| Jul 2024July 2024 | $261M | 147 | 8 | 2 |
| May 2023May 2023 | $181M | 124 | 6 | 2 |
| Apr 2022April 2022 | $175M | 100 | 4 | 2 |
| Jul 2021July 2021 | $105M | 70 | 4 | 2 |
Besides its headquarters, Plum Street Advisors has 4 offices (3 private residences, listed without an address), with 2 listed addresses in 1 state.
Massachusetts · 1 listed address
- 154 Wells Avenue, Newton
Choose a state to see its listed addresses.
Contact and registration details
- Legal name
- Plum Street Advisors, LLC
- Headquarters
- Not reported
- Website
- plumstreetadvisors.com
- Phone
- 504-517-5107
- @plum-street-advisors-llc
- SEC file
- 801-121901
- Founded
- 2016
- Structure
- Louisiana LLC
- Fiscal year end
- December
Plum Street Advisors’ named custodian for separately managed accounts is Charles Schwab ($463M). Plum Street Advisors has custody of $140M for 123 clients.
- Charles SchwabCharles Schwab & Co., Inc. · San Francisco, CA · $463M100%
At year end, Plum Street Advisors’ separately managed accounts were mostly in funds (86%). Its reported 13F holdings for the quarter ended 30 June 2026 total $313M across 107 positions; the largest are Schwab Strategic TR (9.5%), Schwab Strategic TR (7.7%) and Vanguard Index Fds (5.8%).
What the accounts hold
- Stocks5%
- Funds86%
- Bonds1%
- Cash8%
How many clients does Plum Street Advisors have?
Plum Street Advisors has 183 clients and manages $463 million for them, as of June 2026. They include 110 individual clients, 65 high-net-worth individuals and 8 charitable organizations.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 10 June 2026
What services does Plum Street Advisors offer?
Plum Street Advisors provides financial planning, portfolio management for individuals and small businesses, portfolio management for institutions, selecting other managers, education planning, estate planning, insurance, and retirement plan services.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file; Part 2A brochure, Item 4
How much does Plum Street Advisors charge?
Plum Street Advisors charges 0.20%–0.90% a year for its Combined Financial Planning and Portfolio Management. Each asset band is charged at its own rate.
Which custodians does Plum Street Advisors use?
Plum Street Advisors’ separately managed account assets are held at Charles Schwab & Co., Inc. (San Francisco, CA), with $463M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 10 June 2026
How many financial advisors does Plum Street Advisors have?
Plum Street Advisors has 5 investment adviser representatives registered with state securities authorities, out of 8 employees, and 5 perform investment advisory functions. None are registered representatives of a broker-dealer or licensed insurance agents.
Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file
What does Plum Street Advisors invest in?
At the end of its last fiscal year, Plum Street Advisors’ separately managed accounts held 86% registered funds (mutual funds, ETFs, BDCs), 8% cash and equivalents, 5% exchange-traded equities and 1% state and local bonds.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Who owns Plum Street Advisors?
Plum Street Advisors’ direct owners are James Osborn (50% to 75%) and David Dirks (50% to 75%).
Source: Form ADV Part 1A, Schedules A and B, filed 10 June 2026
How does Plum Street Advisors get paid?
Plum Street Advisors is paid through a percentage of assets under management. Its Form ADV lists no commissions or performance-based fees among how it is paid.
Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file
How do I contact Plum Street Advisors?
Its phone number is 504-517-5107. Its website is plumstreetadvisors.com.
