In late July 2026, AI stocks sold off hard. My system read 227 developments — and told me to do nothing.
It was right.
Every investing tool tracks what you own: positions, performance, allocation. None of them hold the thing your decisions actually run on — why you own it. The thesis lives in your head, where it drifts, gets rewritten by hindsight, and disappears exactly when you need it: the day prices fall hard.
Portfolio OS writes down why you own what you own — the beliefs behind each position, ranked, and the specific things that would make you sell. Then it reads the news against it. Every morning it tells you which of your beliefs the world strengthened, pressured, or left alone.
The live test
In late July 2026, AI stocks sold off hard. Over eight days the system read 227 developments and reached a conclusion no price chart could: the demand evidence had gotten stronger while prices fell — and the one place the evidence genuinely moved was somewhere else entirely. I wrote up exactly what it found →
Or watch it happen: 3-minute demo.
Principles
- It reads more than you and surfaces less. The point is fewer, better-grounded moments of attention — not another feed.
- It explains before it recommends. Mostly it doesn't recommend at all. The highest-quality action is often deliberate inaction, and a system that profits from your activity can never tell you that.
- It improves your judgment instead of replacing it. You stay the decision engine; the system remembers, checks, and argues both sides.
Access
Want to see it on your own book? Book a 30-minute call and I'll walk you through it live.
Book a call → · or write me: yehudib15@gmail.com
Writing
About
I'm Yehudi Baptiste. I build AI systems that help people and institutions understand, decide & act more effectively.
Before this: product at HubSpot, Intuit, and Outreach, AI startups in Berlin (LEVERTON, McMakler), and equity research at Credit Suisse, where I was a Doug Paul scholar. Educated at Vassar, HEC Paris, and Duke. First-generation college graduate.