Top RIAs in Maine
Every SEC-registered RIA with a main office in Maine, by regulatory AUM, from Form ADV
32 RIAs registered with the SEC are headquartered in Maine, the 43rd most of any state, managing $32.6B in regulatory assets as of Sep 1, 2026. The largest by regulatory AUM is H.M. Payson in Portland at $9.1B. 5 firms report $1 billion or more.
Data as of Sep 1, 2026, file ia09012026-registered.zip. Retrieved Sep 10, 2026.
01 · The firms
Every SEC-registered RIA in Maine, by regulatory AUM
The default sort is regulatory assets under management as each firm filed it, which puts asset managers and wealth managers on one list. The toggle for firms where individuals and high-net-worth individuals hold the majority of assets is what separates them, using the firm's own Form ADV Item 5.D figures.
All 32 firms, by regulatory AUM as filed.
| # | Firm | City | Regulatory AUM | Advisory staff | Accounts | Individual + HNW clients | Retail share | Filed |
|---|---|---|---|---|---|---|---|---|
| 1 | H.M. PaysonCRD 2993 | Portland | $9.1B | 29 | 4,308 | 3,961 | 77% | Mar 2026 |
| 2 | R M Davis IncCRD 105448 | Portland | $8.2B | 25 | 6,124 | 2,342 | 93% | Mar 2026 |
| 3 | Greenbacker Capital Management LLCCRD 277101 | Portland | $3.1B | 34 | 7 | 0 | 0% | Jul 2026 |
| 4 | Means Wealth ManagementCRD 2748 | Bangor | $1.6B | 15 | 3,520 | 1,302 | 89% | Aug 2026 |
| 5 | Portland Global Advisors LLCCRD 109127 | Portland | $1.2B | 11 | 1,010 | 300 | 96% | Mar 2026 |
| 6 | HeadinvestCRD 140518 | Portland | $891.8M | 6 | 1,107 | 423 | 91% | Mar 2026 |
| 7 | Great Diamond Partners, LLCCRD 299598 | Portland | $804.1M | 7 | 1,736 | 523 | 98% | Apr 2026 |
| 8 | Old Port AdvisorsCRD 108228 | Portland | $782.8M | 10 | 2,245 | 816 | 87% | Aug 2026 |
| 9 | FOW Partners, LPCRD 329051 | Portland | $747.3M | 21 | 5 | n.d. | 0% | Mar 2026 |
| 10 | Aries Wealth Management, LLCCRD 175477 | Portland | $658.6M | 3 | 497 | 164 | 86% | Mar 2026 |
| 11 | Harpswell Capital Advisors, LLCCRD 168996 | Yarmouth | $587.0M | 2 | 79 | 34 | 4% | May 2026 |
| 12 | Bigelow Investment Advisors, LLCCRD 143733 | Portland | $555.2M | 4 | 895 | 314 | 74% | May 2026 |
| 13 | Penobscot Financial AdvisorsCRD 286211 | Portland | $544.5M | 7 | 1,811 | 562 | 100% | Apr 2026 |
| 14 | Coston, McIsaac & Shea Financial AdvisorsCRD 194515 | Bar Harbor | $466.9M | 11 | 1,254 | 1,254 | 100% | May 2026 |
| 15 | Robinson Smith Wealth Advisors, LLCCRD 123098 | South Portland | $444.9M | 5 | 903 | 228 | 99% | Aug 2026 |
| 16 | Choice Wealth Advisors LLCCRD 297745 | Waterville | $323.3M | 3 | 1,247 | 602 | 97% | Feb 2026 |
| 17 | BirchbrookCRD 105164 | Bangor | $296.5M | 5 | 863 | 310 | 95% | Apr 2026 |
| 18 | RM Financial Services, LLCCRD 304297 | Falmouth | $245.4M | 3 | 980 | 390 | 95% | Mar 2026 |
| 19 | Abbington Investment Group, LLCCRD 174407 | South Portland | $202.1M | 3 | 91 | 50 | 100% | Mar 2026 |
| 20 | Clark & Stuart IncCRD 107991 | Portland | $195.6M | 4 | 180 | 178 | 97% | Mar 2026 |
| 21 | J.M. Arbour, LLCCRD 313352 | Gardiner | $183.2M | 10 | 1,253 | 720 | 100% | Mar 2026 |
| 22 | Richard Brothers, Financial AdvisorsCRD 113826 | South Portland | $180.6M | 6 | 433 | 173 | 99% | Mar 2026 |
| 23 | Outfitter FinancialCRD 291413 | Brunswick | $157.7M | 1 | 64 | 58 | 86% | Mar 2026 |
| 24 | GRP Retirement PlanningCRD 333183 | Farmingdale | $155.3M | 5 | 1,972 | 846 | 100% | Jan 2026 |
| 25 | Maiden Cove CapitalCRD 312478 | Yarmouth | $153.7M | 2 | 162 | 46 | 80% | Mar 2026 |
| 26 | Blue Point Financial, Inc.CRD 299688 | Scarborough | $152.7M | 2 | 504 | 187 | 96% | Mar 2026 |
| 27 | Eagle Financial StrategiesCRD 138825 | Bangor | $146.0M | 3 | 504 | 294 | 95% | Mar 2026 |
| 28 | Gibson Financial Solutions, Inc.CRD 117831 | Ellsworth | $133.7M | 1 | 433 | 153 | 100% | Mar 2026 |
| 29 | Wright Cove CapitalCRD 307252 | Portland | $120.7M | 2 | 82 | 41 | 100% | Jan 2026 |
| 30 | Maine Advisory AssociatesCRD 311679 | Falmouth | $116.5M | 2 | 529 | 176 | 99% | Jul 2026 |
| 31 | Oldfield Wealth PartnersCRD 332765 | Bangor | $110.0M | 4 | 283 | 93 | 100% | Jul 2026 |
| 32 | Guidance Point Retirement Services, LLCCRD 161000 | Portland | $88.2M | 6 | 8 | n.d. | 0% | May 2026 |
02 · By city
Where in Maine the firms sit
Main-office city as filed. Up to the twenty-five cities with the most firms.
- Portland14 · $26.9B
- Bangor4 · $2.1B
- South Portland3 · $827.6M
- Falmouth2 · $361.9M
- Yarmouth2 · $740.7M
- Bar Harbor1 · $466.9M
- Brunswick1 · $157.7M
- Ellsworth1 · $133.7M
- Farmingdale1 · $155.3M
- Gardiner1 · $183.2M
- Scarborough1 · $152.7M
- Waterville1 · $323.3M
03 · Questions
Questions people ask about RIAs in Maine
- How many RIAs are in Maine?
- 32 RIAs registered with the SEC list a main office in Maine in the SEC's Form ADV data as of Sep 1, 2026. That count excludes state-registered RIAs, which generally manage under $100 million and file with the state rather than the SEC, and firms whose address is suppressed on Form ADV.
- What is the largest RIA in Maine?
- By regulatory assets under management as filed on Form ADV, the largest SEC-registered RIA headquartered in Maine is H.M. Payson in Portland, at $9.1B. Regulatory AUM counts all assets a firm manages, so the largest filer in a state is often an asset manager rather than a wealth manager.
- How many Maine RIAs manage more than $1 billion?
- 5 of the 32 SEC-registered RIAs headquartered in Maine report regulatory assets under management of $1 billion or more. The median firm in the state reports $309.9M.
- Where does this data come from?
- From the SEC's monthly Form ADV data file for SEC-registered investment advisers (ia09012026-registered.zip, data as of Sep 1, 2026). Each figure is as the firm itself reported it on Form ADV Item 5; the SEC does not verify it. Every row links to the firm's record on the SEC's Investment Adviser Public Disclosure site.
Definitions and source
What each column means, in the SEC's words
- Regulatory assets under management Form ADV Item 5.F(2)(c)
- If yes, what is the amount of your regulatory assets under management and total number of accounts? Total, discretionary plus non-discretionary.
- Total accounts Form ADV Item 5.F(2)(f)
- Total number of accounts, discretionary plus non-discretionary.
- Employees Form ADV Item 5.A
- Approximately how many employees do you have? Include full- and part-time employees but do not include any clerical workers.
- Advisory employees Form ADV Item 5.B(1)
- Approximately how many of the employees reported in 5.A. perform investment advisory functions (including research)?
- Broker-dealer registered representatives Form ADV Item 5.B(2)
- Approximately how many of the employees reported in 5.A. are registered representatives of a broker-dealer?
- Individual and high-net-worth clients Form ADV Item 5.D(a), 5.D(b)
- Number of clients and amount of regulatory assets under management for individuals (other than high net worth individuals) and for high net worth individuals.
- Commissions Form ADV Item 5.E(5)
- You are compensated for your investment advisory services by (check all that apply): (5) Commissions.
- Private funds Form ADV Item 7.B
- Are you an adviser to any private fund?
Source: U.S. Securities and Exchange Commission, Form ADV data, Information About Registered Investment Advisers and Exempt Reporting Advisers, file ia09012026-registered.zip (data as of Sep 1, 2026), retrieved Sep 10, 2026. Figures are as self-reported by each firm on Form ADV Item 5; the SEC does not verify them. Neither the SEC nor the state securities authorities have approved the information filed on Form ADV, and we can not guarantee its accuracy.
Winthrop & Co. is compensated by firms when an advisor joins through us. The advisor never pays. Firms on this page are listed by arithmetic on the SEC's file, not by any relationship with us, and none is ranked, labelled or recommended.