XYZ Venture Capital
About XYZ Venture Capital
XYZ Venture Capital invests at seed and Series A in enterprise software, fintech and AI.
Ross Fubini founded XYZ Venture Capital in 2017, and PitchBook and Crunchbase both list him as founder. The firm announced its second fund, an $80 million Fund II, on December 15, 2020, and described its mission and team publicly for the first time then. That release said Fund I had backed early-stage companies worth more than $6 billion in aggregate. It also said the firm had made more than 40 investments and 22 companies tied to the Palantir network, including Anduril, Mosaic and Saltbox. Fubini had spent years as an advisor and executive coach to Palantir leaders. The 2020 team photo named Chauncey Hamilton, Christine Hubbard, JeanClaude Dorsainvil and Mariana Garza alongside Fubini. Parsers.vc lists Hamilton as a general partner. The size of Fund I and any fund after Fund II are not public in the sources I found. Which partners lead AI deals is also not public.
The firm's 2020 focus was fintech infrastructure, enterprise collaboration and under-served sectors such as insurance and the public sector. Its recent AI rounds on the Lounge deals desk cover a wider range. Aslan Protects, a Washington, D.C. company founded in 2025, builds human-supervised autonomous AI operatives for cyber defense and intelligence. It raised a $20.8M seed co-led by Khosla Ventures and XYZ in September 2026. Agon, a London defense tech startup, finalized a $23M seed expansion in July 2026. That followed a $7M pre-seed tranche, for $30M in total. Lounge lists XYZ as a lead on both rounds.
XYZ does not publish a standard check size. Tracxn counts 39 seed investments with an average round size of $5.55M and 28 Series A investments with an average round of $18.5M. Those figures are round sizes across all investors, not XYZ's own checks. Lounge's recent AI deals are one pre-seed ($1.7M) and four seed rounds ($10M to $23M).
- Aslan Protects: autonomous AI operatives for cyber defense and intelligence; $20.8M seed, September 2026, co-led with Khosla Ventures.
- Agon: London defense tech startup; $23M seed expansion, July 2026, after a $7M pre-seed.
- Plot: $10M seed, June 2026, led by XYZ.
- Frontier Health: $16M seed, June 2026.
- Felix: $1.7M pre-seed, April 2026, led by XYZ.
- xyz.vc/theorems/annoucingxyz
- fintechfutures.com/press-releases/after-backing-companies-worth-more-t
- finsmes.com/2026/09/aslan-protects-raises-20-8m-in-seed-funding.html
- parsers.vc/fund/xyz.vc
- tracxn.com/d/venture-capital/xyz-venture-capital/__Z-RqIfYqnbQejh1KFiO
- pitchbook.com/profiles/investor/178234-03
- crunchbase.com/organization/xyz-ventures-33d5
Investing activity
XYZ Venture Capital appears in 5 AI deals tracked by the Lounge deals desk, rounds totalling $60M, and led 4 of them. The rounds are mostly Seed and Pre-seed, with a median round size of $16M and the largest at $23M. The most recent are Aslan Protects (Seed, $20.8M, Sep 2026), Agon (Seed, $23M, Jul 2026) and Frontier Health (Seed, $16M, Jun 2026).
XYZ Venture Capital most often invests alongside Khosla Ventures, 2048 Ventures, Liquid 2 Ventures and Alumni Ventures, and the companies it backs on Lounge are mostly in AI.
Deals
Frequently asked questions about XYZ Venture Capital
Who founded XYZ Venture Capital and when?
Ross Fubini founded the firm in 2017. It is based in San Francisco.
How big are XYZ Venture Capital's funds?
XYZ announced an $80 million Fund II in December 2020. Fund I's size and any later fund sizes are not public in the sources I found.
What AI companies has XYZ Venture Capital backed?
Recent AI-related rounds on Lounge include Aslan Protects, Agon, Plot, Frontier Health and Felix. In 2026 XYZ led or co-led rounds at Aslan Protects, Agon, Plot and Felix.
What check size does XYZ Venture Capital write?
The firm does not publish its check sizes. Tracxn data shows an average seed round of about $5.55M across the firm's seed deals, and that figure covers all investors in those rounds.
Does XYZ Venture Capital invest in pre-seed AI startups?
Yes. It led Felix's $1.7M pre-seed in April 2026 and took part in Agon's $7M pre-seed tranche before the seed expansion. Lounge tags the firm as Pre-seed and Seed.
What AI companies has XYZ Venture Capital invested in?
XYZ Venture Capital's AI investments include Aslan Protects, Agon, Frontier Health, Plot and Felix. The 5 rounds on Lounge are listed on this page with amounts, dates and co-investors.
Where is XYZ Venture Capital based?
XYZ Venture Capital is based in San Francisco, California, United States.
What stage does XYZ Venture Capital invest at?
In the rounds tracked on Lounge, XYZ Venture Capital has invested at Seed and Pre-seed, with a median round of $16M. XYZ Venture Capital led 4 of those rounds.
Who does XYZ Venture Capital co-invest with?
XYZ Venture Capital's most frequent co-investors on Lounge are Khosla Ventures (1 deal), 2048 Ventures (1 deal), Liquid 2 Ventures (1 deal), Alumni Ventures (1 deal) and BoxGroup (1 deal).
How can founders reach XYZ Venture Capital?
Founders on Lounge can see XYZ Venture 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 XYZ Venture Capital to their Investor Pipeline to track the conversation.