About This Fund
Boost VC Deep Tech Fund 4 is an $87 million pre-seed venture capital fund managed by Boost VC, the San Mateo-based firm co-founded by Adam Draper and Brayton Williams that specializes in investing in what it calls science fiction technology. The fund reached final close in September 2025, bringing total Boost VC assets under management to $300 million across its fund series and over 400 active portfolio companies.
Fund 4 targets pre-seed founders building breakthrough technologies across aerospace, nuclear energy, robotics, biotechnology, artificial intelligence, crypto, space, materials science, and ocean technology. The fund writes standardized $500,000 checks into pre-seed rounds at $3 million to $7 million valuations, leading approximately 70-plus companies per year. Boost pioneered the institutional deep-tech pre-seed model, becoming one of the first institutional investors in Bitcoin companies in 2013 before broadening to the full spectrum of science fiction technologies.
Boost's first two vintage funds (2013 and 2016) delivered DPI of 2.15x and 4.35x respectively, on early bets in crypto and hard science. The firm's portfolio includes Coinbase (early investor), Deepgram ($1.3 billion valuation), Radiant Nuclear ($300 million raise), and Grid Aero ($20 million Series A). Portfolio companies have collectively raised over $5 billion in follow-on capital. Fund 4 is the latest and largest step in Boost's mission to accelerate the arrival of science fiction technologies.