Wealth Management Firms (RIAs) in Portland, ME

14 wealth management firms are on this list. Of those that report regulatory assets on Form ADV, H.M. Payson & Co. is the largest: $9.1 billion through H. M. Payson & Co. (filed March 2026).

R M Davis Inc. follows with $8.2 billion. The 14 advisers counted report $23.8 billion together; the ten largest hold 97% of it, and half report less than $607 million.

Updated November 2026. Rechecked quarterly; next check January 2027. Figures read November 6, 2026, as filed March 2026 to September 2026.

Where the $23.8BN sitsThe 14 firms counted, by size. The bar is each size band's share of the combined dollars.

$5BN to $10BN72%2 firms
$1BN to $5BN5%1 firm
$500MM to $1BN18%6 firms
Under $500MM5%5 firms

Latest Form ADV of each, filed Mar 2026 to Sep 2026. Read November 6, 2026; sources at the end of the page.

Wealth management firms listedList of November 2026; 14 are wealth managers: 14
Combined assets14 counted; as filed to Sep 2026: $23.8BN
Largest: H.M. Payson & Co.As filed March 2026: $9.1BN
Median firmHalf of the 14 report less: $607MM
Held by the ten largestOf the $23.8BN combined: 97%

H.M. Payson & Co., R M Davis Inc. and Portland Global Advisors lead the Portland, ME wealth management firms by assets

The fourteen largest by regulatory assets on their latest Form ADV. Together they report $23.8BN, 100% of the $23.8BN the 14 counted report.

1
H.M. Payson & Co.
Wealth manager, Portland, ME
$9.1BNRegulatory assets, Mar 2026
58% high net worth, 19% other individuals, 9% businesses
Individual clients
3,961
Private funds
1
2
R M Davis Inc.
Wealth manager, Portland, ME
$8.2BNRegulatory assets, Mar 2026
85% high net worth, 8% other individuals, 4% charities
Individual clients
2,342
3
Portland Global Advisors
Wealth manager, Portland, ME
$1.2BNRegulatory assets, Mar 2026
87% high net worth, 9% other individuals, 3% charities
Individual clients
300
4
Headinvest
Wealth manager, Portland, ME
$892MMRegulatory assets, Mar 2026
85% high net worth, 9% charities, 6% other individuals
Individual clients
423
5
Great Diamond Partners
Wealth manager, Portland, ME
$804MMRegulatory assets, Sep 2026
89% high net worth, 9% other individuals, 1% pension plans
Individual clients
523
6
Old Port Advisors
Wealth manager, Portland, ME
$783MMRegulatory assets, Aug 2026
50% high net worth, 37% other individuals, 12% pension plans
Individual clients
816
7
Aries Wealth Management
Wealth manager, Portland, ME
$659MMRegulatory assets, Mar 2026
85% high net worth, 10% businesses, 3% charities
Individual clients
164
8
Bigelow Investment Advisors
Wealth manager, Portland, ME
$555MMRegulatory assets, May 2026
60% high net worth, 22% pension plans, 14% other individuals
Individual clients
314
9
Penobscot Financial Advisors
Wealth manager, Portland, ME
$545MMRegulatory assets, Apr 2026
73% high net worth, 27% other individuals
Individual clients
562
10
Robinson Smith Wealth Advisors
Wealth manager, South Portland, ME
$445MMRegulatory assets, Aug 2026
90% high net worth, 9% other individuals
Individual clients
228
11
RM Financial Services
Wealth manager, Falmouth, ME
$245MMRegulatory assets, Mar 2026
67% high net worth, 29% other individuals, 4% pension plans
Individual clients
390
12
Richard Brothers, Financial Advisors
Wealth manager, South Portland, ME
$181MMRegulatory assets, Mar 2026
78% high net worth, 22% other individuals
Individual clients
173
13
Maiden Cove Capital
Wealth manager, Yarmouth, ME
$154MMRegulatory assets, Mar 2026
79% high net worth, 15% pension plans, 4% businesses
Individual clients
46
14
Blue Point Financial
Wealth manager, Scarborough, ME
$153MMRegulatory assets, Mar 2026
70% high net worth, 26% other individuals, 4% pension plans
Individual clients
187

Regulatory assets each adviser reported in its latest Form ADV. Each pin opens the filing behind the figure; the ranking rule and sources are at the end of the page. Read November 6, 2026.

One firm holds 38% of the assets

How the 14 firms counted spread by size: most are small, the dollars sit at the top.

Every firm on one scaleEach dot is one firm's regulatory assets in its latest filing. Every dot is one adviser. Dollar scale is logarithmic.

One dot per firm counted. Read November 6, 2026.

The 14 firms, by size

Under $500MM55%$1.2BN

$500MM to $1BN618%$4.2BN

$1BN to $5BN15%$1.2BN

$5BN to $10BN272%$17.2BN

$10BN to $25BN00%$0

$25BN and over00%$0

Assets each reported in its latest filing; shares are of the $23.8BN combined, one row per firm. Read November 6, 2026.

38%

of the assets reported sits with one firm, H.M. Payson & Co.. The five largest hold 84%; 11 of 14 report under $1 billion.

38%Largest46%Next 416%Other 9

Who the 14 are

Wealth managers14

Kind of each, from its Form ADV (Items 5.G and 6.A), October 2026.

Whose money it isShare of the 14 advisers' assets by type of client

High net worth73%
Other individuals14%
Charities5%
Businesses4%
Pension plans2%
Funds (1940 Act)1%

Client types each adviser reports with its assets, latest filing; sums of filed figures.

Leaders beyond the ranking

Figures the main ranking does not compare: the most individual clients, the most high net worth clients.

The most individual clientsIndividuals each firm advises, high net worth and other, on its latest Form ADV (Item 5.D).
Rank	Name	Figure
1	H.M. Payson & Co.	3,961Mar 2026
2	R M Davis Inc.	2,342Mar 2026
3	Old Port Advisors	816Aug 2026
4	Penobscot Financial Advisors	562Apr 2026
5	Great Diamond Partners	523Sep 2026
6	Headinvest	423Mar 2026
7	RM Financial Services	390Mar 2026
8	Bigelow Investment Advisors	314May 2026

Counts of clients as filed; a client is an account holder the adviser counts, not a household.

The most high net worth clientsHigh net worth individuals each firm advises, on its latest Form ADV (Item 5.D).
Rank	Name	Figure
1	R M Davis Inc.	1,300Mar 2026
2	H.M. Payson & Co.	910Mar 2026
3	Headinvest	322Mar 2026
4	Great Diamond Partners	285Sep 2026
5	Old Port Advisors	215Aug 2026
6	Penobscot Financial Advisors	193Apr 2026
7	Portland Global Advisors	168Mar 2026
8	Robinson Smith Wealth Advisors	141Aug 2026

Counts of clients as filed; a client is an account holder the adviser counts, not a household.

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All 14 wealth management firms

A to Z, with each firm's regulatory assets, its clients, the share of its assets held for individuals and its private funds, each with a pin to its Form ADV.

Find in this list

Showing all 14 firms

Wealth Management Firms (RIAs) in Portland, ME 14 firms, A to Z
Office	Assets	Clients	Individuals	Private funds
Aries Wealth Management Wealth manager, Portland, ME. Detail and sources for Aries Wealth Management Form ADV of Aries Wealth Management, LLC (CRD 175477), SEC registered adviser, filed March 2026, main office Portland, ME: regulatory assets $659MM; 6 employees. Tied to this row by the CRD the list cites from the filing. Listed stocks, Form 13F-HR of Aries Wealth Management, LLC, quarter ended June 30, 2026, filed July 2026. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals, portfolio management for businesses and institutions and pension consulting. Clients (Item 5.D): 164 individuals, 133 of them high net worth; individuals hold 86% of its regulatory assets. Files: SEC Form ADV, SEC Form 13F.	$659MMMar 2026	164	86%
Bigelow Investment Advisors Wealth manager, Portland, ME. Detail and sources for Bigelow Investment Advisors Form ADV of Bigelow Investment Advisors, LLC (CRD 143733), SEC registered adviser, filed May 2026, main office Portland, ME: regulatory assets $555MM; 8 employees. Tied to this row by the CRD the list cites from the filing. Listed stocks, Form 13F-HR of Bigelow Investment Advisors, LLC, quarter ended June 30, 2026, filed July 2026. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals and portfolio management for businesses and institutions. Clients (Item 5.D): 314 individuals, 134 of them high net worth; individuals hold 74% of its regulatory assets. Files: SEC Form ADV, SEC Form 13F.	$555MMMay 2026	331	74%
Blue Point Financial Wealth manager, Scarborough, ME. Detail and sources for Blue Point Financial Form ADV of Blue Point Financial, Inc. (CRD 299688), SEC registered adviser, filed March 2026, main office Scarborough, ME: regulatory assets $153MM; 3 employees. Tied to this row by the CRD the list cites from the filing. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals, pension consulting, selection of other advisers and other services. Clients (Item 5.D): 187 individuals, 68 of them high net worth; individuals hold 96% of its regulatory assets. Files: SEC Form ADV.	$153MMMar 2026	187	96%
Great Diamond Partners Wealth manager, Portland, ME. Detail and sources for Great Diamond Partners Form ADV of Great Diamond Partners, LLC (CRD 299598), SEC registered adviser, filed September 2026, main office Portland, ME: regulatory assets $804MM; 12 employees. Tied to this row by the CRD the list cites from the filing. Listed stocks, Form 13F-HR of Great Diamond Partners, LLC, quarter ended June 30, 2026, filed July 2026. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals and other services. Clients (Item 5.D): 523 individuals, 285 of them high net worth; individuals hold 98% of its regulatory assets. Files: SEC Form ADV, SEC Form 13F.	$804MMSep 2026	533	98%
H.M. Payson & Co. Wealth manager, Portland, ME. Detail and sources for H.M. Payson & Co. Form ADV of H. M. Payson & Co. (CRD 2993), SEC registered adviser, filed March 2026, main office Portland, ME: regulatory assets $9.1BN; 1 private fund, $38MM gross; 34 employees. Tied to this row by the CRD the list cites from the filing. Listed stocks, Form 13F-HR of H. M. Payson & Co., quarter ended June 30, 2026, filed July 2026. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals, management of registered funds, portfolio management for businesses and institutions, pension consulting, publications and educational seminars. Clients (Item 5.D): 3,961 individuals, 910 of them high net worth; individuals hold 77% of its regulatory assets. Files: SEC Form ADV, SEC Form 13F.	$9.1BNMar 2026	4,308	77%	1
Headinvest Wealth manager, Portland, ME. Detail and sources for Headinvest Form ADV of Headinvest, LLC (CRD 140518), SEC registered adviser, filed March 2026, main office Portland, ME: regulatory assets $892MM; 13 employees. Tied to this row by the CRD the list cites from the filing. Listed stocks, Form 13F-HR of Headinvest, LLC, quarter ended June 30, 2026, filed August 2026. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals, portfolio management for businesses and institutions and selection of other advisers. Clients (Item 5.D): 423 individuals, 322 of them high net worth; individuals hold 91% of its regulatory assets. Files: SEC Form ADV, SEC Form 13F.	$892MMMar 2026	445	91%
Maiden Cove Capital Wealth manager, Yarmouth, ME. Detail and sources for Maiden Cove Capital Form ADV of Maiden Cove Capital, LLC (CRD 312478), SEC registered adviser, filed March 2026, main office Yarmouth, ME: regulatory assets $154MM; 3 employees. Tied to this row by the CRD the list cites from the filing. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals, portfolio management for businesses and institutions, pension consulting and other services. Clients (Item 5.D): 46 individuals, 46 of them high net worth; individuals hold 80% of its regulatory assets. Files: SEC Form ADV.	$154MMMar 2026	52	80%
Old Port Advisors Wealth manager, Portland, ME. Detail and sources for Old Port Advisors Form ADV of Old Port Advisors, Inc. (CRD 108228), SEC registered adviser, filed August 2026, main office Portland, ME: regulatory assets $783MM; 14 employees. Tied to this row by the CRD the list cites from the filing. Listed stocks, Form 13F-HR of Old Port Advisors, Inc., quarter ended June 30, 2026, filed July 2026. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals, portfolio management for businesses and institutions and pension consulting. Clients (Item 5.D): 816 individuals, 215 of them high net worth; individuals hold 87% of its regulatory assets. Files: SEC Form ADV, SEC Form 13F.	$783MMAug 2026	856	87%
Penobscot Financial Advisors Wealth manager, Portland, ME. Detail and sources for Penobscot Financial Advisors Form ADV of Penobscot Wealth Management (CRD 286211), SEC registered adviser, filed April 2026, main office Portland, ME: regulatory assets $545MM; 12 employees. Tied to this row by the CRD the list cites from the filing. Listed stocks, Form 13F-HR of Penobscot Wealth Management, quarter ended June 30, 2026, filed July 2026. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals, pension consulting and educational seminars. Clients (Item 5.D): 562 individuals, 193 of them high net worth; individuals hold 100% of its regulatory assets. Files: SEC Form ADV, SEC Form 13F.	$545MMApr 2026	562	100%
Portland Global Advisors Wealth manager, Portland, ME. Detail and sources for Portland Global Advisors Form ADV of Portland Global Advisors LLC (CRD 109127), SEC registered adviser, filed March 2026, main office Portland, ME: regulatory assets $1.2BN; 13 employees. Tied to this row by the CRD the list cites from the filing. Listed stocks, Form 13F-HR of Portland Global Advisors LLC, quarter ended June 30, 2026, filed August 2026. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals, portfolio management for businesses and institutions, publications and other services. Clients (Item 5.D): 300 individuals, 168 of them high net worth; individuals hold 96% of its regulatory assets. Files: SEC Form ADV, SEC Form 13F.	$1.2BNMar 2026	304	96%
R M Davis Inc. Wealth manager, Portland, ME. Detail and sources for R M Davis Inc. Form ADV of R M Davis Inc. (CRD 105448), SEC registered adviser, filed March 2026, main office Portland, ME: regulatory assets $8.2BN; 63 employees. Tied to this row by the CRD the list cites from the filing. Listed stocks, Form 13F-HR of R M Davis Inc., quarter ended June 30, 2026, filed August 2026. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals, portfolio management for businesses and institutions and selection of other advisers. Clients (Item 5.D): 2,342 individuals, 1,300 of them high net worth; individuals hold 93% of its regulatory assets. Files: SEC Form ADV, SEC Form 13F.	$8.2BNMar 2026	2,437	93%
Richard Brothers, Financial Advisors Wealth manager, South Portland, ME. Detail and sources for Richard Brothers, Financial Advisors Form ADV of Allegiance Financial Group, Inc. (CRD 113826), SEC registered adviser, filed March 2026, main office South Portland, ME: regulatory assets $181MM; 10 employees. Tied to this row by the CRD the list cites from the filing. Possible match by name only, not counted: Allegiance Financial Group Advisory Services LLC (CRD 313110), registered adviser, filed May 2026, Vienna, VA. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals, portfolio management for businesses and institutions, pension consulting, selection of other advisers and other services. Clients (Item 5.D): 173 individuals, 54 of them high net worth; individuals hold 99% of its regulatory assets. Files: SEC Form ADV.	$181MMMar 2026	173	99%
RM Financial Services Wealth manager, Falmouth, ME. Detail and sources for RM Financial Services Form ADV of RM Financial Services, LLC (CRD 304297), SEC registered adviser, filed March 2026, main office Falmouth, ME: regulatory assets $245MM; 4 employees. Tied to this row by the CRD the list cites from the filing. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals and pension consulting. Clients (Item 5.D): 390 individuals, 119 of them high net worth; individuals hold 95% of its regulatory assets. Files: SEC Form ADV.	$245MMMar 2026	402	95%
Robinson Smith Wealth Advisors Wealth manager, South Portland, ME. Detail and sources for Robinson Smith Wealth Advisors Form ADV of Robinson Smith Wealth Advisors, LLC (CRD 123098), SEC registered adviser, filed August 2026, main office South Portland, ME: regulatory assets $445MM; 8 employees. Tied to this row by the CRD the list cites from the filing. Services on its Form ADV (Item 5.G): financial planning, portfolio management for individuals and selection of other advisers. Clients (Item 5.D): 228 individuals, 141 of them high net worth; individuals hold 99% of its regulatory assets. Files: SEC Form ADV.	$445MMAug 2026	232	99%

Assets are the regulatory assets in the adviser's latest Form ADV (Item 5.F; solid bar). Clients are every client it counts (Item 5.D); Individuals is the share of its assets held for individuals, high net worth and other; private funds are the funds it advises (Item 7.B). Each pin opens the filing behind the figure. The square beside a name opens every figure with its filing and notes.

One firm holds 38% of the money

Four findings from the filings of the 14 firms counted.

38%
of the $23.8 billion the 14 firms counted report is one firm's: H.M. Payson & Co.. Without it, the other 13 report $14.7 billion.
Assets, latest Form ADV of each; sums of filed figures
$607MM
is the median: half of the 14 report less, and 11 report under $1 billion.
Assets, latest Form ADV of each
1
private funds are advised by the firms counted; H.M. Payson & Co. advises the most, 1.
Private funds on each Form ADV (Schedule D); sums of filed figures
73%
of their assets is high net worth money; the next largest client type is other individuals, at 14%.
Client types each adviser reports with its assets; sums of filed figures

Questions

How many wealth management firms are there in Portland, ME?

This list holds 14 wealth management firms in the Portland, ME metro; 14 of them report regulatory assets on Form ADV, $23.8 billion together.

What are the largest wealth management firms in Portland, ME?

By the regulatory assets they report: H.M. Payson & Co. $9.1 billion, R M Davis Inc. $8.2 billion, Portland Global Advisors $1.2 billion, Headinvest $892 million, Great Diamond Partners $804 million.

How much do wealth management firms in Portland, ME typically manage?

Of the 14 that report, the median reports $607 million in regulatory assets; 11 report under $1 billion.

How do you start a relationship with wealth management firms in Portland, ME?

Each figure on this page carries a pin that opens the firm's Form ADV, which names its services, its clients and how to reach it. For fund managers and companies raising capital, Praxis Rock runs capital formation programs; see Raise Capital.

Sources and method

Who is listed: 14 wealth management firms, 14 are wealth managers. Every SEC registered adviser with a main office in Portland-South Portland, ME MSA (Census CBSA 38860) that reports $100 million or more in regulatory assets, half or more of them for individuals, less the firms our other lists carry as another kind.
Ranking rule: The top 20, every total, share and median, the charts and the answers to the questions use one set: the 14 advisers that report regulatory assets in their latest SEC Form ADV, with a main office in the Portland, ME metro, that the filing itself ties to the row (the CRD the list cites, or the row's own website in Item 1.I), one figure per adviser. A name match with no such tie is shown in the row's detail only, never ranked or counted.
Our arithmetic: The $23.8BN, the median, shares, charts and boards are sums and medians of filed numbers over that one set; 0 firms with a figure outside it stay listed with the figure and the reason.
Pins: Each figure's pin opens the filing it comes from: the adviser's Form ADV as filed, or the SEC filing index of its latest 13F report. The pin's label names the source and its date.
What we searched: On November 6, 2026 we read every firm's latest Form ADV in the SEC monthly file by its CRD and searched 13F reports by the CIK on its Form ADV record. Of the 14, 14 report on a current Form ADV and 9 file 13F reports.
Words: Each firm's kind is read from its Form ADV: a wealth manager advises individuals and offers financial planning (Items 5.D and 5.G); "also a broker-dealer" where Item 6.A is checked. Firm names only: no person, contact or website is shown.

Sources and dates
Figure	Source	Period, read
Assets, private funds, client types, main office, employees	SEC Form ADV adviser data, October 2026 report, and each adviser's Form ADV as filed, 14 advisers	Filings to 2026-10-01; read 2026-11-06
Reports of listed stocks (13F filer)	SEC EDGAR Form 13F, 9 filers, by the CIK on each Form ADV	Latest filing; read 2026-11-06
Main office to metro	HUD USPS ZIP to county crosswalk, 2026 Q2, and the Census metro delineation, July 2023	Read 2026-11-06
Logos	None shown: each firm has a monogram	Read 2026-11-06

Cite as: Praxis Rock Advisors, "Wealth Management Firms (RIAs) in Portland, ME," updated November 6, 2026, praxisrock.com/resources/investors/wealth-management-firms-portland-me

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