VXI Capital
About VXI Capital
Investor in Volantis.
VXI Capital is a venture firm based in Somerville, Massachusetts. One third-party fund database, Venture Capital Archive, says it was founded in 2023 by Orin Hoffman, the former CTO of the Defense Innovation Unit at the US Department of Defense. The same listing says Hoffman previously worked at The Engine, the MIT-connected tough tech fund. It names him as Founder and Managing Director and lists no other partners. The firm's own site does not give a founding date, so treat the 2023 date as unconfirmed. The same database also lists a VXI Capital Fund I as established in 2017, which conflicts with the 2023 date. Fund sizes are not public in the sources found, and no partner is named as leading AI investing specifically.
VXI Capital does not present itself as an AI-only investor. Its listed focus is hardware, alternative energy, defense tech, deep tech and healthcare, and it describes a concentrated portfolio of challenge-driven companies. Its AI-related deals are in the physical layer that AI depends on. In October 2026 it joined the $88M Series A of Volantis, a San Francisco company building AI inference hardware that uses optics to increase chip memory capacity and bandwidth. The round was co-led by Lachy Groom and Abstract Ventures, with John Doerr, Susa Ventures and Triatomic Capital also participating. VXI Capital also returned as an existing investor in the $110M Series C of VEIR, which makes superconducting power delivery systems for AI data centers. That round was co-led by Matter Venture Partners and Tyche Partners.
Venture Capital Archive describes a "barbell" strategy. The firm invests at or around Series A, then puts significantly larger amounts into a small group of companies at Series C and D. The same listing gives a check range of $1M to $10M. That range comes from a third-party database, not from the firm, so confirm it directly. The firm has not published a fund size or a standard check size on the pages found. VEIR shows the follow-on pattern, since VXI Capital took part in the Series C as an existing investor.
- Volantis: optical memory for AI inference chips; $88M Series A in October 2026, co-led by Lachy Groom and Abstract Ventures.
- VEIR: superconducting power delivery for AI data centers; $110M Series C in October 2026, with VXI Capital participating as an existing investor. Total raised is reported as $225M.
- Other listed portfolio companies, which are not AI-specific: TeraDAR, Resonant Link Medical and Blue Energy.
Investing activity
VXI Capital appears in 2 AI deals tracked by the AI Lounge deals desk, rounds totalling $198M. The rounds are mostly Series C and Series A, with a median round size of $110M. The most recent are VEIR (Series C, $110M, Oct 2026) and Volantis (Series A, $88M, Oct 2026).
VXI Capital most often invests alongside Tyche Partners, Matter Venture Partners, LG Technology Ventures and Galvanize Climate Solutions, and the companies it backs on AI Lounge are mostly in AI data center power infrastructure and Semiconductors / memory interconnect.
Deals
Frequently asked questions about VXI Capital
Who founded VXI Capital?
Venture Capital Archive lists Orin Hoffman, former CTO of the Defense Innovation Unit, as founder and managing director. It gives 2023 as the founding year, but the firm's own site does not confirm this.
Does VXI Capital invest in AI startups?
Yes, mainly in AI infrastructure. It backed Volantis (AI inference memory) in 2026 and is an existing investor in VEIR (power for AI data centers). It has not described itself as an AI-only fund.
What check size does VXI Capital write?
A third-party database lists $1M to $10M, with entry at or around Series A and larger checks at Series C and D. The firm has not published these figures, so ask the firm directly.
How large is VXI Capital's fund?
No fund size was found in public sources. A database mentions a Fund I but gives no confirmed amount.
Where is VXI Capital based?
It is headquartered in Somerville, Massachusetts, and its listed countries of investment are the United States.
What AI companies has VXI Capital invested in?
VXI Capital's AI investments include VEIR and Volantis. The 2 rounds on AI Lounge are listed on this page with amounts, dates and co-investors.
What stage does VXI Capital invest at?
In the rounds tracked on AI Lounge, VXI Capital has invested at Series C and Series A, with a median round of $110M.
Who does VXI Capital co-invest with?
VXI Capital's most frequent co-investors on AI Lounge are Tyche Partners (1 deal), Matter Venture Partners (1 deal), LG Technology Ventures (1 deal), Galvanize Climate Solutions (1 deal) and Congruent Ventures (1 deal).
How can founders reach VXI Capital?
Founders on AI Lounge can see VXI Capital'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 VXI Capital to their Investor Pipeline to track the conversation.