Firm profile

GREEN CENTURY CAPITAL MANAGEMENT INC

BOSTON, MACRD 112442Latest ADV September 30, 2025

Green Century Capital Management Inc is an SEC registered investment adviser organized as a corporation with a primary office location in Boston, MA. Its latest Form ADV filing, dated September 30, 2025, reports $1.3B in regulatory assets under management, 16 employees, and 4 accounts.

Assets Under Management
$1.3B
Employees
16
Offices
--
Total Clients
<5
Primary office
BOSTON, MA
114 STATE STREET SUITE 200, BOSTON, MA, United States
ADV Item 1F location record

Contact and digital presence

ADV profile links

Leadership

1 roles identified
CCOJoseph R. Guerin

Advisory services offered

2 types reported
Portfolio management for investment companies
Selection of other advisers

Fee models offered

1 types reported
Asset based fees
Sources checked May 13, 2026

Client Coverage Demographics

Top client segmentInvestment Cos. represent 75.0% of total clients.
Top client categories% of clientsClients
1
Investment Cos.
75.0%
3
2
PROPRIETARY ACCOUNT
25.0%
1

Regulatory Assets Under Management Breakdown

Total regulatory assets under management$1.3Bas of September 30, 2025
Discretionary100.0%
$1.3B
100% of total RAUM100.0%
Non-discretionary0.0%
$0
0% of total RAUM0.0%
All regulatory assets under management are discretionary.

Assets under management Growth by Quarter

Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.

Latest AUM$1.3B
Total Accounts4
10Y AUM Change+$885M (+237.4%)

Employee Growth by Quarter

Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.

Total Employees16
Clients per Employee0:1
10Y Employee Change+4 (+33.3%)

* Metrics are based on the latest available data, including Form ADV filings, brochures, and relationship summaries pulled from the SEC IAPD, and may be subject to change. Learn what is included in the Rialytix data. Please refer to the firm's official disclosures for the most accurate information using their CRD number. This is not investment advice.