before using AI for stock analysis.There are many ways to use AI in investing—prompts, models, and strategies.
Most of them are directionally correct.
However, the setup required before applying those methods
is rarely discussed.This site provides the foundation that AI needs
before it starts producing confident but shallow answers.
Here, you’ll find deep, structured research articles
that organize the key analytical angles
needed to understand a specific stock.
Each article is designed to be copied directly into AI
and used as an external brain
for long-term investment thinking.
Instead of relying on fragmented opinions or stock tips,
DDI helps you think through a company systematically—
using AI as your thinking partner.
Currently, the site covers 200+ major U.S. stocks,
and all articles are updated quarterly after earnings.
Find a Stock
How to Use This Site
Deep Dive Investing is built on the idea that the real value emerges when you
paste these articles into AI and explore the business through structured questions and perspectives.
The mindset, frameworks, and question-setting approach are explained here.
Covered Stocks
Browse all covered stocks in one place.
DDI Score
DDI Score is a cross-sectional scoring framework built on top of these research materials,
designed to help compare companies across multiple dimensions.
Kindle Book
A short book that explains the philosophy and practical use of this site.
If you find it helpful, your honest review on Amazon would mean a lot.
Excel Dashboard
An Excel dashboard designed to support deep-dive, long-term investing using the ideas presented on this site.
The file is freely available without registration.