YC Winter 2026 Startup Rankings #1 - o11 (9/10) 🚀

I'm going through 30+ companies from Y Combinator's Winter 2026 batch and ranking them based on what I'd actually invest in.

Here's company #1: o11

What They Do:

AI platform for capital markets built directly into Microsoft 365 (Excel, Word, PowerPoint). They're targeting investment banks, hedge funds, and asset managers.

Why I'm Bullish (9/10 Rating):

1. They Meet Users Where They Are

Capital markets firms haven't changed workflows in decades
They live in Excel and Word
Most AI companies fail because they ask users to abandon everything and adopt new platforms
o11 just plugs into the tools they already use every day

2. Founder Credibility is Insane

Aryah: Morehead-Cain Scholar, led AI at two major capital markets firms
Ajay: 4x founder, ex-Mayo Clinic AI Lab
Technical depth + domain expertise = rare combo

3. Business Model is a Money Printer

B2B SaaS in fintech = high margins, sticky contracts
Enterprise deals in capital markets = massive contract values
If they land 2-3 major banks, they're set
Switching costs are HIGH once integrated into daily workflows

4. TAM is Massive

Trillions flow through these firms
Efficiency gains = direct bottom-line impact
AI in capital markets is inevitable; question is who captures it

What do you think?

Would you invest in o11? What am I missing in my analysis?

Drop your thoughts below 👇

(29 more companies coming in this series - who should I cover next?)

P.S. - Want access to my full ranking spreadsheet with all 30+ companies, my ratings, and investment theses? I'll be dropping that exclusively in here once I finish the series. 📊

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