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I'm Difei Shen · 我是沈迪斐

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Latest posts

Investment Operating System — From 12 Years of Research to an Executable Framework

Using AI for 12 rounds of interviews + 10 master benchmarks to distill investment experience into a three-layer operating system.

August 03, 2026
InvestRAG — Turning 10,000+ Research Reports into a Queryable Knowledge Base

Turning ten thousand sell-side research reports into a knowledge base you can query in natural language.

August 03, 2026
InvestPilot — A Framework That Keeps LLMs Honest in Investment Research

Built an agent harness on Claude Code — a deep fundamental investment research framework. How do you make a large model run a rigorous research process without making things up.

June 20, 2026
Move on

A record of a surgery.

May 25, 2026

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