Y Combinator companies
The Y Combinator portfolio as the radar sees it: synced daily, classified into clusters, checked for life and movement. 6,197 companies.
clusterVertical AI agents 898Consumer 821B2B SaaS 787Fintech 633Developer tools 515Healthcare and bio 477Commerce and marketplaces 433Agent infrastructure 350Robotics and physical world 314Data for AI 192Security and compliance 189Horizontal AI assistants 152AI infra and compute 151Climate and energy 123Defense and space 85Other 44
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| Aer Compound compliance: the central hub for meeting SEC obligations | Security and complianceSEC compliance management platform | Y CombinatorS21 | Acquired | 2026-08-23 |
| Keyri Secure fraud prevention and authentication platform for developers | Security and complianceDevice fingerprinting and fraud prevention | Y CombinatorS21 | Acquired | checked 2026-08-17 |
| Pactima Live video signing for real-time agreements | Security and complianceeSignature and document verification | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Tarsal Data pipeline for your security data lake. | Security and complianceSecurity data pipeline infrastructure | Y CombinatorS21 | Acquired | 2026-08-23 |
| TelivyAI Automate your cyber security risk assessments | Security and complianceAI cyber risk assessment platform | Y CombinatorS21 | Acquired | 2026-08-23 |
| StacksiAI Automated Answers to Security Questionnaires | Security and complianceSecurity questionnaire automation | Y CombinatorW21 | Acquired | checked 2026-08-17 |