About Me

I'm Difei Shen (沈迪斐), based in Shanghai.

I come from secondary-market investing, with a background in statistics — twelve years of deep fundamental research, in a style tilted toward high payoffs and expectation gaps. I have also done digitalization upgrades for companies. My current focus is AI-automated investment research — bringing large models and agent engineering into the research process, making research more systematic, more falsifiable, and more reproducible. InvestPilot (an automated research framework), InvestRAG (a research-report knowledge base), and the investment operating system introduced on this site are all work along this line.

Outside of investing: swimming, cycling, hiking, photography, film, and cooking.

About This Site

This is my personal website, in a few parts:

• Blog — long-form writing in five categories: investment / computer science / math / life style / 向内探索
• Gallery — everyday photography
• Resume — my CV