Venture capital fund · 1 deal
Every published round Two Sigma took part in, and every parcel of existing shares it bought off another holder. Deals we hold but haven't published yet are not counted.
| Company | Stage | Announced | Amount | Role | Alongside | Sources |
|---|---|---|---|---|---|---|
| Nullify | Seed | 4 Aug 2026 | $17.8m | Participant | Startup Daily (5 Aug 2026), Startup Daily (6 Feb 2026) |
Companies Two Sigma has backed in a published round, and companies whose existing shares it bought off another holder.
| Company | What it does | First invested | Rounds | Led |
|---|---|---|---|---|
| Nullify | AI agents that autonomously find, validate and fix software vulnerabilities | 4 Aug 2026, Seed | 1 | 0 |
Fund closes reported for Two Sigma, as distinct from the investments it has made.
Companies Two Sigma has backed that another company then bought. An exit for the holding, not a deal Two Sigma did.
Stories naming Two Sigma. Where several outlets covered the same round, they are bundled under whichever ran the fullest account.
Australian-founded AI vulnerability platform Nullify, now San Francisco-based, has closed a second seed round led by SYN Ventures with returning backer Black Nova; SYN's Glenn Chisholm joins its board.
Also Startup Daily