Hennessy Advisors provides portfolio management for investment companies.
Hennessy Advisors reports 17 investment companies. These counts refer to investment vehicles, rather than the individual investors in them. Of its assets, 100.0% ($4.25B across 17 accounts) are managed with discretion.
| Client type | Clients | Assets |
|---|---|---|
| Investment companies | 100% | 100% |
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Investment companies | 17 | $4.25B | 100.0% | $250M |
| Total | 17 | $4.25B | 100% | $250M |
- Clients
- 17
- Regulatory AUM
- $4.25B
- AUM share
- 100.0%
- Avg. per client
- $250M
Total
- Clients
- 17
- Regulatory AUM
- $4.25B
- AUM share
- 100%
- Avg. per client
- $250M
- Clients outside the U.S.
- 0%
- Clients advised without assets under management last fiscal year
- 0
- Private funds advised
- 0
Hennessy Advisors is paid through a percentage of assets under management; its fees and minimums are set out in its brochures on the SEC website.
Neil Hennessy owns 25% to 50% of Hennessy Advisors. Neil Hennessy is CEO; the leadership team includes President Brian Carlson, Chief Operating Officer Teresa Nilsen and Chief Financial Officer Kathryn Fahy. It has 19 employees, 8 of them in advisory roles.
Staff
- 19 employees
- 8 in advisory functions
- 1 state-registered rep
- 3 broker-dealer reps
- Owns 25% to 50% of Hennessy Advisors, Inc.
Neil Hennessy
Control person · since January 2018
Hennessy Advisors’ regulatory assets grew from $3.56B (December 2020) to $4.25B (November 2025); clients rose from 16 to 17 and employees fell from 22 to 19.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | StaffEmployees | Offices |
|---|---|---|---|---|
| Nov 2025November 2025 | $4.25B | 17 | 19 | 4 |
| Dec 2024December 2024 | $5.15B | 17 | 18 | 4 |
| Dec 2023December 2023 | $3.07B | 17 | 17 | 4 |
| Jan 2023January 2023 | $2.98B | 17 | 19 | 4 |
| Dec 2021December 2021 | $4.1B | 16 | 19 | 3 |
| Dec 2020December 2020 | $3.56B | 16 | 22 | 3 |
Besides its headquarters, Hennessy Advisors has 3 offices, with 4 listed addresses across 4 states.
California · 1 listed address
- 7250 Redwood Boulevard, Suite 200, NovatoHQ
Massachusetts · 1 listed address
- 101 Federal Street, Boston
North Carolina · 1 listed address
- 1340 Environ Way, Chapel Hill
Texas · 1 listed address
- 100 Crescent Court, Dallas
Contact and registration details
- Legal name
- Hennessy Advisors, Inc.
- Headquarters
- 7250 Redwood Boulevard, Suite 200, Novato, CA 94945
- Website
- hennessyadvisors.com
- Phone
- 415-899-1555
- SEC file
- 801-36288
- Structure
- California corporation
- Fiscal year end
- September
Hennessy Advisors does not have custody of client assets.
Hennessy Advisors’ reported 13F holdings for the quarter ended 30 June 2026 total $3.13B across 325 positions; the largest are Viasat Inc. (3.5%), Sanmina Corp. (2.8%) and Mastec Inc. (2.7%).
How many clients does Hennessy Advisors have?
Hennessy Advisors has 17 clients and manages $4.25 billion for them, as of November 2025. They include 17 investment companies.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 14 November 2025
What services does Hennessy Advisors offer?
Hennessy Advisors provides portfolio management for investment companies.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
How many financial advisors does Hennessy Advisors have?
Hennessy Advisors has 1 investment adviser representative registered with state securities authorities, out of 19 employees, and 8 perform investment advisory functions. 3 employees are registered representatives of a broker-dealer and 0 employees are licensed insurance agents.
Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file
Who owns Hennessy Advisors?
Hennessy Advisors’ direct owner is Neil Hennessy, each holding 50% or less.
Source: Form ADV Part 1A, Schedules A and B, filed 14 November 2025
How does Hennessy Advisors get paid?
Hennessy 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 Hennessy Advisors?
Hennessy Advisors’ main office is at 7250 Redwood Boulevard, Suite 200, Novato, CA 94945. Its phone number is 415-899-1555. Its website is hennessyadvisors.com.