Investor Profile: Root Ventures — Thesis, Cheque Size & How to Apply

Most seed VCs claim to love technical founders. Root Ventures is built from them: a San Francisco deep-tech seed fund where every partner has an engineering background, founded in 2015 by Avidan Ross. Its mission is "seeding bold engineers," and its portfolio — Particle, Instrumental, Shaper, Dusty Robotics — reads like a hardware founder's wishlist. If Root Ventures funding fits your company, the firm invests from a $190 million fund base, writing initial cheques of $3–5 million and usually leading the seed round.

Root Ventures funding: the thesis

Root invests "at the earliest stages of technical founders taking engineering risk." Its hunting ground is deep tech, robotics, hardware, manufacturing, developer tools, machine learning, semiconductors and automation — companies where the risk is engineering, not distribution. The team is deliberately engineer-only: Ross previously designed industrial robotics and was CTO of CIM Group; partners Kane Hsieh, Chrissy Meyer (ex-Apple, ex-Square) and Lee Edwards (ex-iRobot, ex-Teespring CTO) all come from building things. A distinctive touch: the firm publishes public investment memos on GitHub, so founders can read exactly how Root thinks before ever meeting the team.

Cheque size & stages

Root is a seed-stage lead investor. Initial cheques typically run $3 million to $5 million, with "up to $5M" stated as the typical cheque size, and the firm usually leads the first round. It does a selective few new deals a year and holds roughly two-thirds of each fund in reserve for follow-ons — a founder-friendly structure that means real support in later rounds. The fund history shows steady scaling: a $31.4 million debut ("pi"-sized), $76.7 million Fund II in 2018, a $150 million Fund III in 2022, and a fourth fund targeting $250 million per a 2025 SEC filing. (Bolt, the hardware VC originally slated for this slot, stopped making new investments in 2020 — Root is the active firm carrying that thesis today.)

Notable portfolio

The current portfolio lists 68 companies. Hardware and robotics names include Particle (IoT development platform), Instrumental (manufacturing analytics), nTopology (engineering software), Dusty Robotics (construction layout robots), Shaper (handheld auto-correcting CNC), Skycatch (aerial robotics), Creator (autonomous food robots), Esper (device management), Nautilus Labs (maritime optimisation), Mashgin (automated checkout), ChargeLab (EV charging software) and Kayhan (spaceflight operations). Software and AI bets include Zed, Superconductive, Privacy Dynamics, ApolloShield and Adept.

Programs & perks

Root runs no accelerator or incubator and offers no published startup credits or perks. The support is partner-level and technical: an open associate role and a current 68-company portfolio signal a firm that is actively deploying, not harvesting.

How to apply for Root Ventures funding

Founders can reach the firm directly at [email protected] — the official contact address on root.vc. There is no application form; a concise email with your deck works. Because the partners are engineers, lead with the technical insight: what engineering risk you are taking, why your team is the one to take it, and what the first product milestone looks like. Reading the firm's public investment memos first is the closest thing to a cheat sheet that exists in venture.