Insights

Low-Carbon Focus Fortistar is a privately owned investment firm dedicated to accelerating the transition to a lower carbon future. This positions them as a target for sustainability-oriented technology and service providers, energy efficiency solutions, and carbon reduction services that can enhance their portfolio companies’ sustainability metrics.

Industry Concentration With experience across Power, Transportation, and Industrial sectors, Fortistar presents opportunities for vendors and partners offering energy infrastructure, decarbonization technologies, and operational optimization tailored to these segments.

Hands-On Value Creation Fortistar emphasizes a hands-on approach to creating economic value, suggesting a receptive decision-making style for strategic partnerships, pilot programs, and co-investment opportunities that demonstrate measurable ROI.

Moderate Revenue Band Current revenue range of 25–50 million indicates potential for scalable solutions and mid-market deployments, as well as long-cycle investments that align with Fortistar’s capital appetite and portfolio growth strategies.

Private Capital Partner As a self-funded investor leveraging internal capital, Fortistar may favor proprietary, non-dilutive partnerships, exclusive deals, and fast-turnaround pilots that leverage their independence and flexibility in decision-making.

Similar companies to Fortistar

Fortistar Tech Stack

Fortistar uses 8 technology products and services including Microsoft SharePoint, WordPress, Zendesk, and more. Explore Fortistar's tech stack below.

  • Content Management System
  • Content Management System
  • Documentation Tools
  • Packery
    Javascript Libraries
  • parallax.js
    Javascript Libraries
  • Bootstrap
    UI Frameworks
  • Microsoft ASP.NET
    Web Frameworks
  • jQuery Waypoints
    Web Tools And Plugins

Fortistar's Email Address Formats

Fortistar uses at least 3 email formats:
Fortistar Email FormatsExamplePercentage
FLast@fortistar.comJDoe@fortistar.com
89%
FirLast@fortistar.comJohDoe@fortistar.com
5%
FirstLast@fortistar.comJohnDoe@fortistar.com
6%

Frequently Asked Questions

What is Fortistar's stock symbol?

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Fortistar is a publicly traded company; the company's stock symbol is FSSI.

What is Fortistar's official website and social media links?

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Fortistar's official website is fortistar.com and has social profiles on LinkedIn.

How much revenue does Fortistar generate?

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As of October 2026, Fortistar's annual revenue is estimated to be $25M - $50M.

What is Fortistar's NAICS code?

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Fortistar's NAICS code is 52391 - Miscellaneous Intermediation.

How many employees does Fortistar have currently?

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As of October 2026, Fortistar has approximately 61 employees across 2 continents, including North America and Asia. Key team members include Accountant: D. P. Explore Fortistar's employee directory with LeadIQ.

What industry does Fortistar belong to?

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Fortistar operates in the Venture Capital and Private Equity Principals industry.

What technology does Fortistar use?

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Fortistar's tech stack includes Microsoft SharePoint, WordPress, Zendesk, Packery, parallax.js, Bootstrap, Microsoft ASP.NET and jQuery Waypoints.

What is Fortistar's email format?

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Fortistar's email format typically follows the pattern of FLast@fortistar.com. Find more Fortistar email formats with LeadIQ.
Fortistar logo

Fortistar

Venture Capital and Private Equity PrincipalsNew York, United States51-200 Employees

Fortistar, based in White Plains, New York, is a privately owned investment firm established in 1993. It aims to accelerate the transition to a lower carbon economy by deploying its own capital and taking a hands-on approach to creating economic value responsibly. The firm has deep experience in the power, transportation, and industrial sectors as well as the technologies evolving them.

Its work centers on collaborating with players within those sectors to address operational and development challenges and to drive durable performance. Fortistar positions itself within the private equity and venture capital landscape as a focused practitioner in the energy transition, supported by a mid-sized team.

Section iconCompany Overview

Stock Symbol
FSSI
NAICS Code
52391 - Miscellaneous Intermediation
Employees
51-200

Section iconFunding & Financials

  • $25M - $50M

    Fortistar's revenue is estimated to be in the range of $25M - $50M

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