Underscore VC
Underscore VC is a Boston-based venture capital firm founded in 2015, focusing on early-stage B2B software investments, particularly at the Pre-Seed and Seed stages. The firm employs a unique open-source investing model, sharing profits with a network of over 1,800 Core Partners who provide valuable support to portfolio companies. With approximately $357.7 million in assets under management, Underscore VC has made over 114 investments, currently supporting 60 to 67 companies. The firm specializes in B2B enterprise technology, investing in sectors such as vertical SaaS and fintech, including a
Investing activity
Underscore VC appears in 2 AI deals tracked by the AI Lounge deals desk, rounds totalling $25M. The rounds are mostly Seed, with a median round size of $25M. The most recent are Transfyr (Seed, $25M, Aug 2026) and Subconscious (Seed, $5.1M, Aug 2026).
Underscore VC most often invests alongside General Catalyst, Lyda Hill Philanthropies, Lux Capital and SV Angel, and the companies it backs on AI Lounge are mostly in AI.
Deals
Frequently asked questions about Underscore VC
What AI companies has Underscore VC invested in?
Underscore VC's AI investments include Transfyr and Subconscious. The 2 rounds on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is Underscore VC based?
Underscore VC is based in Boston, Massachusetts, United States.
What stage does Underscore VC invest at?
In the rounds tracked on AI Lounge, Underscore VC has invested at Seed, with a median round of $25M.
Who does Underscore VC co-invest with?
Underscore VC's most frequent co-investors on AI Lounge are General Catalyst (1 deal), Lyda Hill Philanthropies (1 deal), Lux Capital (1 deal), SV Angel (1 deal) and Neo (1 deal).
How can founders reach Underscore VC?
Founders on AI Lounge can see Underscore VC's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with the firm under Warm Paths, and add Underscore VC to their Investor Pipeline to track the conversation.