Data / Investment advisers / California / O'Brien Investment Management, LLC
O'Brien Investment Management, LLC, Torrance, CA: $254 million AUM, SEC registered investment adviser
Updated November 7, 2026. Source: the SEC's Form ADV data files for investment advisers.
O'Brien Investment Management, LLC is an SEC registered investment adviser with its main office in Torrance, California and reports $254 million in regulatory assets under management in its Form ADV filed August 27, 2026. Its clients include high net worth individuals, individuals and pension and profit sharing plans. It is paid through a percentage of assets under management.
The request: Watch O'Brien Investment Management, LLC (CRD number 284057): each new Form ADV amendment, with AUM, clients and private funds. $10 of work on sign-up, no card.
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- Registration
- SEC registered investment adviser
- CRD number
- 284057
- SEC file number
- 801-118289
- SEC status
- Approved, effective March 24, 2020
- Main office
- 24594 Hawthorne Blvd., Torrance, CA 90505
- Phone
- (310) 363-2360
- Website
- obrienim.com
- Regulatory AUM
- $254,332,886 in the Form ADV filed August 27, 2026
- Discretionary AUM
- $254,332,886
- Accounts
- 334
- Employees
- 3, of which 2 give investment advice
- Form of organization
- Limited Liability Company
- Paid through
- a percentage of assets under management
- Form ADV Item 11 disclosures
- None reported
- Latest Form ADV filing
- August 27, 2026
- SEC record
- Investment Adviser Public Disclosure
Clients
Client types the adviser reports in Form ADV item 5.D, with the AUM it attributes to each.
| Client type | Clients | AUM |
|---|---|---|
| High net worth individuals | 96 | $238.4 million |
| Individuals (other than high net worth individuals) | 69 | $11 million |
| Pension and profit sharing plans | 2 | $4.9 million |
AUM in the SEC's monthly files
Each change in the AUM the adviser reported across the monthly SEC files held here, with the first file that shows the new value.
| First in the file of | AUM | Form ADV filed |
|---|---|---|
| April 1, 2026 | $254.3 million | March 31, 2026 |
| December 1, 2025 | $231.3 million | March 31, 2025 |
Other advisers in Torrance
| Adviser | City | AUM | Private funds | Source |
|---|---|---|---|---|
| Ep Wealth Advisors | Torrance | $45.15 billion | 2 | adviserinfo.sec.gov |
| Banyan Tree Asset Management, LLC | Torrance | $1.03 billion | Not listed | adviserinfo.sec.gov |
| Albitz/Miloe and Associates, Inc. | Torrance | $820.6 million | Not listed | adviserinfo.sec.gov |
| Tortuga Wealth Management | Torrance | $222.9 million | Not listed | adviserinfo.sec.gov |
| Advanced Portfolio Strategies | Torrance | $217.4 million | Not listed | adviserinfo.sec.gov |
| Taylor Wealth Management, LLC | Torrance | $170.5 million | Not listed | adviserinfo.sec.gov |
| Alessandra Capital Management, LLC | Torrance | $153.5 million | Not listed | adviserinfo.sec.gov |
| South Bay Financial Partners | Torrance | $114.8 million | Not listed | adviserinfo.sec.gov |
Also on SpecStream
- Investment advisers in Torrance, CA
- Investment advisers in California
- Advisers with $100 million to $500 million in AUM
- Advisers serving high net worth individuals
- Advisers serving individuals
- O'Brien Investment Management, LLC on the SEC's adviser search
Public data published by the US Securities and Exchange Commission (US government work). Advisers report these values themselves in Form ADV, and neither the SEC nor the states approve or guarantee them. AUM is regulatory assets under management as the adviser reported it in Form ADV item 5.F, which can differ from the AUM a firm quotes elsewhere. Exempt reporting advisers do not report AUM. Office address, phone and website are the adviser's main office as filed; a firm that files its main office as a private residence shows no street address or phone. An Item 11 disclosure is a reported event, not a finding about the firm today. Details for each firm are on the SEC's Investment Adviser Public Disclosure site. This page uses SEC data and is not endorsed or certified by the SEC. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.