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Recent changes
- Oct 19, 2026Oct 19, 2026Raised $105M Series A The SaaS News
- Oct 19, 2026Oct 19, 2026New investor: Jane Street The SaaS News
- Oct 19, 2026Oct 19, 2026Antithesis Raises $105M Series A Led By Jane Street Pulse story
Funding History
1 event · sources dated per row| Date | Event | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| Oct 19, 2026 | Series A | $105M | — | Jane StreetLeadunverified | The SaaS News |
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Antithesis FAQ
Who are Antithesis's investors?
Antithesis's investors include Jane Street, Frontline Ventures, Teamworthy Ventures (FKA Haystack Partners).
Sources & methodologyshow
Where these figures come from
- The SaaS Newsresearch database1 fact
Figures are labelled Reported (a source states it), Estimated, Derived (computed from other facts) or Rumored (in talks / unconfirmed). Rumors never replace a confirmed figure. Each figure keeps its own as-of date; history is preserved rather than overwritten.