Data / Investment advisers / Maine / Portland
Investment advisers in Portland, ME: 14 firms, $17.9 billion in AUM
Updated November 7, 2026. Source: the SEC's Form ADV data files for investment advisers.
14 investment advisers have their main office in Portland, Maine: 13 SEC registered and 1 exempt reporting. The registered advisers report $17.9 billion in regulatory assets under management in the SEC's Form ADV file of November 2, 2026, and the largest is R M Davis Inc with $8.2 billion.
The request: Every investment adviser in Portland, Maine with AUM over $100 million, with phone and website. $10 of work on sign-up, no card.
SpecStream is the live web data engine for teams and agents. It reads the SEC's Form ADV files every month, and this page is that reading, keyed on the CRD number. Ask for the advisers you track by state, city, size, client type or private funds, and new registrations and filings arrive in your sheet, CRM, Slack or agent as the SEC publishes them.
- 14Advisers
- 13SEC registered
- 1Exempt reporting
- $17.9 billionTotal AUM
- 12Advisers over $100 million
- 3Manage private funds
- November 2, 2026File date
Largest advisers by AUM
Ranked by regulatory AUM, then by private funds. Each row links to the firm page where it has one, and to its SEC record.
| Adviser | City | AUM | Accounts | Employees | Private funds | Phone | Website | Source |
|---|---|---|---|---|---|---|---|---|
| R M Davis Inc | Portland | $8.15 billion | 6,124 | 63 | Not listed | (207) 774-0022 | rmdavis.com | adviserinfo.sec.gov |
| Greenbacker Capital Management LLC | Portland | $3.14 billion | 7 | 128 | 4 | (646) 556-6611 | adviserinfo.sec.gov | |
| Portland Global Advisors LLC | Portland | $1.17 billion | 1,010 | 13 | Not listed | (207) 773-2773 | portlandglobal.com | adviserinfo.sec.gov |
| Headinvest | Portland | $891.8 million | 1,107 | 13 | Not listed | (207) 773-5333 | headinvest.com | adviserinfo.sec.gov |
| Great Diamond Partners, LLC | Portland | $804.1 million | 1,736 | 12 | Not listed | (207) 274-2500 | adviserinfo.sec.gov | |
| Old Port Advisors | Portland | $782.8 million | 2,245 | 14 | Not listed | (207) 774-6552 | adviserinfo.sec.gov | |
| Fow Partners, LP | Portland | $747.3 million | 5 | 25 | 5 | (617) 752-1590 | fowpartners.com | adviserinfo.sec.gov |
| Aries Wealth Management, LLC | Portland | $658.6 million | 497 | 6 | Not listed | (207) 536-0530 | adviserinfo.sec.gov | |
| Bigelow Investment Advisors, LLC | Portland | $555.2 million | 895 | 8 | Not listed | (207) 772-2900 | adviserinfo.sec.gov | |
| Penobscot Financial Advisors | Portland | $544.5 million | 1,811 | 12 | Not listed | (207) 990-1901 | adviserinfo.sec.gov | |
| Clark & Stuart Inc | Portland | $195.6 million | 180 | 4 | Not listed | (207) 775-1140 | clarkandstuart.com | adviserinfo.sec.gov |
| Wright Cove Capital | Portland | $120.7 million | 82 | 2 | Not listed | (207) 400-1392 | wrightcove.com | adviserinfo.sec.gov |
| Guidance Point Retirement Services, LLC | Portland | $85.4 million | 8 | 8 | Not listed | (207) 358-3099 | adviserinfo.sec.gov | |
| Voltage Ventures LP | Portland | Not listed | Not listed | Not listed | 1 | (401) 369-2404 | voltagevc.com | adviserinfo.sec.gov |
Advisers in Portland that manage private funds
3 advisers report private funds. The 30 with the most funds.
| Adviser | City | State | Private funds | Hedge | Private equity | Venture capital | Real estate | Fund gross assets | AUM | Source |
|---|---|---|---|---|---|---|---|---|---|---|
| Fow Partners, LP | Portland | ME | 5 | Not listed | 5 | Not listed | Not listed | $747.3 million | $747.3 million | adviserinfo.sec.gov |
| Greenbacker Capital Management LLC | Portland | ME | 4 | Not listed | 4 | Not listed | Not listed | $305.9 million | $3.14 billion | adviserinfo.sec.gov |
| Voltage Ventures LP | Portland | ME | 1 | Not listed | Not listed | 1 | Not listed | $17.8 million | Not listed | adviserinfo.sec.gov |
Also on SpecStream
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.