Data / Investment advisers / Washington / Rainier Investment Management LLC
Rainier Investment Management LLC, Seattle, WA: $581 million AUM, SEC registered investment adviser
Updated November 7, 2026. Source: the SEC's Form ADV data files for investment advisers.
Rainier Investment Management LLC is an SEC registered investment adviser with its main office in Seattle, Washington and reports $581 million in regulatory assets under management in its Form ADV filed June 23, 2026. Its clients include investment companies, pooled investment vehicles and corporations and other businesses. It is paid through a percentage of assets under management.
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- Registration
- SEC registered investment adviser
- CRD number
- 105556
- SEC file number
- 801-35638
- SEC status
- Approved, effective December 7, 1989
- Main office
- 600 University Street Suite 2412, Seattle, WA 98101
- Phone
- (206) 518-6600
- Regulatory AUM
- $581,139,481 in the Form ADV filed June 23, 2026
- Discretionary AUM
- $581,139,481
- Accounts
- 4
- Employees
- 3, of which 3 give investment advice
- Form of organization
- Limited Liability Company
- Paid through
- a percentage of assets under management
- Other offices
- 3
- Form ADV Item 11 disclosures
- None reported
- Latest Form ADV filing
- June 23, 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 |
|---|---|---|
| Investment companies | 1 | $355.6 million |
| Pooled investment vehicles | 2 | $196.4 million |
| Corporations or other businesses | 1 | $29.1 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 | $581.1 million | March 27, 2026 |
| December 1, 2025 | $617 million | October 20, 2025 |
Other advisers in Seattle
| Adviser | City | AUM | Private funds | Source |
|---|---|---|---|---|
| Lucid Advisors, Inc. | Seattle | $1.15 billion | Not listed | adviserinfo.sec.gov |
| Bridge33 Investment Management LLC | Seattle | $1.08 billion | 6 | adviserinfo.sec.gov |
| Fulcrum Capital, LLC | Seattle | $1.08 billion | Not listed | adviserinfo.sec.gov |
| Pike Street Capital | Seattle | $727.4 million | 7 | adviserinfo.sec.gov |
| Kutscher Benner Barsness & Stevens, Inc. | Seattle | $627.8 million | Not listed | adviserinfo.sec.gov |
| Oliver Capital Management | Seattle | $505.5 million | Not listed | adviserinfo.sec.gov |
| First Washington Corporation | Seattle | $501.2 million | Not listed | adviserinfo.sec.gov |
| Westriver Management, LLC | Seattle | $444.4 million | 27 | adviserinfo.sec.gov |
Also on SpecStream
- Investment advisers in Seattle, WA
- Investment advisers in Washington
- Advisers with $500 million to $1 billion in AUM
- Advisers serving investment companies
- Advisers serving pooled investment vehicles
- Rainier 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.