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MassChallenge

Accelerator

MassChallenge is an Accelerator based in Boston, United States.

Global nonprofit, zero-equity startup accelerator founded in Boston that supports early-stage founders with mentorship, resources, and cash prizes.

Seed
Early Stage
Pre-Seed
Climate Tech
Cybersecurity
Digital Health
Fintech
Headquarters
Boston, United States
Founded
2009
Website
masschallenge.org
Portfolio Companies
42
Total Investments
62
Last Investment
May 2026
Geographic Focus
Global
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Indexed holds 42 portfolio companies and 62 funding rounds for this investor. The full record is or through the API.

Investment Thesis

Zero-equity accelerator model that funds top startups via cash awards instead of taking equity, removing alignment conflicts with founders.

It was founded in 2009. It has made 62 investments. Its portfolio includes Southie Autonomy, Nesterly and B2B Pay. Focus areas include Climate Tech and Cybersecurity.

Portfolio42

Co-investors24

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24 co-investors across 51 shared portfolio companies — who they back alongside, and how often they lead.

Venture Capital ×13 · Accelerator ×10 · Government ×1 · 52 shared rounds

Investment History

Data from Indexed.vcUpdated

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MassChallenge on Indexed.vc
<a href="https://indexed.vc/investors/masschallenge"><img src="https://indexed.vc/api/badge/investor/masschallenge" alt="MassChallenge on Indexed.vc" width="260" height="76" /></a>