Triatomic
About Triatomic
Deep tech. Health tech. New economy. AI. Helping great entrepreneurs build 'century-defining' technologies & businesses. Per Crunchbase, Triatomic Capital has made 25 investments, 9 as lead investor across 19 portfolio companies, with 3 exits including 1 IPOs.
Triatomic Capital was founded in 2022 by Jeff Huber, Steve Hochberg and Peter Zhou, according to the data provider Private Equity List. Huber is described as a former Google executive and the founding CEO of GRAIL. Zhou also co-founded the hedge fund Hongkou Capital and sits on the boards of deep tech companies such as Elegen and iPronics. Other named team members are Willem van den Bosch (Principal), Benjamin Li (Head of APAC) and Anh Wilson (Head of BD and Investor Relations). The firm does not publicly say which partner leads AI deals specifically. SEC filings show Triatomic Capital Private I LP, with a Form D dated January 2024 reporting about $90.6M sold. Third-party databases give differing totals for assets under management, so no single fund size is confirmed here.
Third-party research describes the firm's focus as infrastructure-oriented, cross-vertical applied AI for physical-world and life-science problems. It names five themes: next-generation compute, the automated economy, new materials, engineered biology and new energy. In practice the AI deals cluster in compute hardware (d-Matrix, iPronics, Volantis), AI software and data infrastructure (Chalk, Gimlet Labs) and AI for science and biology (Edison Scientific, Chemify, Radical Numerics). In June 2026 Triatomic took part in Radical Numerics' $50M seed round, which Emergence Capital led. Caplight lists Triatomic as a co-investor, not the lead, in its most recent deals.
Aggregators list Seed, Series A and Series B and later rounds. They put check sizes at $100K to $25M, and some show a typical range of $100K to $1M. The firm has not published these figures itself, so treat them as estimates. Recent deals appear mostly as participation in rounds led by others. One source puts the decision process at about two months, also unconfirmed by the firm. Geographic focus is reported as the US, Asia-Pacific, China, India, Israel and Canada.
- Radical Numerics: AI research lab building general biological intelligence; $50M seed, June 2026, led by Emergence Capital.
- Volantis Semiconductor: compute hardware company; Series A, October 2026 ($88M per the Lounge deals desk).
- Edison Scientific: AI-driven scientific discovery; $70M seed round, December 2025.
- Chalk: real-time data platform for AI applications.
- d-Matrix: digital in-memory compute engine for AI.
- iPronics: reconfigurable photonics for AI data centers.
- Chemify: digitizes chemistry for drug discovery using AI.
- Gimlet Labs and Efficient Computer: both listed as portfolio companies by Caplight, with 2026 rounds.
- privateequitylist.com/investors/triatomic-capital
- vcsheet.com/who/peter-zhou
- hub.waveup.com/funds/triatomic-capital
- f4.fund/firms/triatomic-capital
- caplight.com/investor/triatomic-capital-1
- formds.com/issuers/triatomic-capital-private-i-lp
- finance.yahoo.com/sectors/healthcare/articles/ai-lab-radical-numerics-
- startupintros.com/orgs/triatomic-capital
Investing activity
Triatomic appears in 2 AI deals tracked by the AI Lounge deals desk, rounds totalling $138M. The rounds are mostly Series A and Seed, with a median round size of $88M. The most recent are Volantis (Series A, $88M, Oct 2026) and Radical Numerics (Seed, $50M, Jun 2026).
Triatomic most often invests alongside Lachy Groom, Abstract Ventures, Susa Ventures and VXI Capital, and the companies it backs on AI Lounge are mostly in Semiconductors / memory interconnect and AI.
Deals
Frequently asked questions about Triatomic
Who founded Triatomic Capital?
Private Equity List says Jeff Huber, Steve Hochberg and Peter Zhou founded it in 2022. It is based in Palo Alto, California.
What check size does Triatomic write for AI startups?
The firm does not publish check sizes. Third-party aggregators report $100K to $25M overall, with typical checks of $100K to $1M.
Does Triatomic invest in seed-stage AI companies?
Yes. It joined the $50M seed round of Radical Numerics in June 2026 and the seed round of Edison Scientific in December 2025. It also invests at Series A and later.
What kinds of AI companies does Triatomic back?
Its AI deals span compute hardware, data and software infrastructure, and AI for biology and science. The firm favors technical teams working on physical-world or life-science problems.
Does Triatomic usually lead rounds?
Caplight lists Triatomic as a co-investor in its recent deals, including Radical Numerics and Volantis. Crunchbase counts 9 lead investments out of 25 in total.
What AI companies has Triatomic invested in?
Triatomic's AI investments include Volantis and Radical Numerics. The 2 rounds on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is Triatomic based?
Triatomic is based in Palo Alto, US.
What stage does Triatomic invest at?
In the rounds tracked on AI Lounge, Triatomic has invested at Series A and Seed, with a median round of $88M.
Who does Triatomic co-invest with?
Triatomic's most frequent co-investors on AI Lounge are Lachy Groom (1 deal), Abstract Ventures (1 deal), Susa Ventures (1 deal), VXI Capital (1 deal) and John Doerr (1 deal).
How can founders reach Triatomic?
Founders on AI Lounge can see Triatomic'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 Triatomic to their Investor Pipeline to track the conversation.