Investment Firms in Waltham, Massachusetts, United States
Waltham, Massachusetts, United States's investment landscape is shaped by Healthcare, with 40% of its 5 investment firms focused on this sector. The most active by portfolio size are Agent Capital, HLM Investment Partners, and Longworth Venture Partners.
Healthcare dominates the investment landscape in Waltham, with 40% of investment firms focused on this sector.
Waltham is a particularly strong hub for early-stage investing, with over 100% of investment firms active at the Seed or Pre-Seed stage.
Last updated: 7 October 2026
Investment Firms
5
Total Investments
124
Top Sector
Healthcare
Top Stage
Series A
Top Investment Sectors in Waltham
The most popular sector focus among Waltham investment firms is Healthcare, with 2 investment firms (40%) investing in the space. This is followed by Biotech & Life Sciences (2), Consumer (2), Enterprise Software (1), SaaS (1).
Investment Stages in Waltham
Waltham investment firms are most active at the Series A stage (5 investment firms). This is followed by Seed (5), Series B (4), Series C (3), Growth (3).
Agent Capital
Waltham, Massachusetts, United States
39 investments
Series A, Series B
Healthcare, Biotech & Life Sciences
HLM Investment Partners
Waltham, Massachusetts, United States
36 investments
Series A, Series C
Healthcare
Longworth Venture Partners
Waltham, Massachusetts, United States
24 investments
Seed, Series B
Enterprise Software, SaaS, Data & Analytics …
MassVentures
Waltham, Massachusetts, United States
19 investments
Seed, Series A
AI, Biotech & Life Sciences, Climate & Energy …
Breakaway
Waltham, Massachusetts, United States
6 investments
Series A, Growth
Consumer, Food & Agriculture