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RIA Intel State Report

Maine RIA Landscape — 2026

A data-driven overview of SEC-registered wealth advisory firms headquartered in Maine, including growth trends, succession risk analysis, and M&A opportunity signals.

Source: SEC Form ADV · Updated July 2026
Total Firms
42
Total AUM?
$27.2B
Median AUM
$214M
13F Filers
13
AUM Tier Distribution
Under $100M4
$100M–$500M25
$500M–$1B8
$1B–$5B4
$5B+1
State Snapshot
Total Firms42
Total AUM$27.2B
Median AUM$214M
13F Filers13
High Succession Risk4
Elevated Succession Risk9
Succession Risk Breakdown
High
4 firms (10%)
Elevated
9 firms (22%)
Moderate
10 firms (24%)
Lower
18 firms (44%)
Growth Leaders — Wealth Advisory Firms
FirmCityAUM3Y CAGRSuccession
ABBINGTON INVESTMENT GROUP, LLCSOUTH PORTLAND$202M+23.9%Elevated
HARPSWELL CAPITAL ADVISORS, LLCYARMOUTH$587M+22.9%Lower
COSTON, MCISAAC, AND PARTNERS INC.BAR HARBOR$467M+20.1%Elevated
PENOBSCOT WEALTH MANAGEMENTPORTLAND$545M+19.9%Lower
GREENBACKER CAPITAL MANAGEMENT LLCPORTLAND$3.1B+19.6%Moderate
VIGILANT CAPITAL MANAGEMENT, LLCPORTLAND$2.2B+16.6%Moderate
GRAY WEALTH MANAGEMENT, INCBANGOR$329M+16.2%Moderate
RM FINANCIAL SERVICES, LLCFALMOUTH$245M+15.0%Lower
M&A Opportunity Signals
🎯
12Acquisition candidates
Firms with elevated/high succession risk and AUM $100M–$5B
📈
3Growing but vulnerable
Positive 3Y CAGR with high succession risk — attractive for acquirers
📉
2Mid-market shrinking
AUM $100M–$1B with negative 3Y CAGR and elevated+ succession risk
🔒 Top 25 Acquisition Targets — Ranked by Composite Score
RankFirmAUMScore
1COSTON, MCISAAC, AND PARTNERS INC.$467M46.2
2PORTLAND GLOBAL ADVISORS LLC$1.2B41
3GIBSON FINANCIAL SOLUTIONS, INC.$134M40.8
4ALPHA CAPITAL ADVISORS, INC.$146M36.4
5CLARK & STUART INC$196M33.6
6ABBINGTON INVESTMENT GROUP, LLC$202M31.6
🔒

Acquisition Target Rankings

Full ranked list of 25 acquisition targets with composite scores based on succession risk, growth trajectory, and peer benchmarking.

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Methodology. This report covers SEC-registered investment advisers classified as wealth advisory firms (filter: is_wealth_advisory = true) headquartered in Maine. AUM figures are drawn from the most recent Form ADV filing. Succession risk tiers are computed using a proprietary 5-pillar model incorporating founder tenure, ownership concentration, AUM dependency, team depth, and filing recency. Growth CAGR is calculated from the three most recent annual filings where available. Acquisition scores blend succession risk (40%), AUM growth trajectory (35%), and national peer rank (25%). Data sourced from SEC EDGAR. This page is for informational purposes only and does not constitute investment advice.