NANikhil Adithyaninfreecodecamp.org·1d ago · 41 min readBuild a Market Time Machine: Replay Trading Sessions with Python and WebSocketsHistorical market data usually arrives as a completed dataset. That's convenient for analysis, but very different from the way trading software experiences a live market. In production, events arrive 00
NANikhil Adithyaninfreecodecamp.org·Aug 14 · 47 min readHow to Build a Multi-Agent Trading Research System with LangChain Deep Agents [Full Handbook]A trading research agent can write strategy code, run a backtest, inspect the results, and keep revising the strategy. The harder problem is making sure that this loop doesn't turn into an uncontrolle00
NANikhil Adithyaninfreecodecamp.org·Jul 14 · 31 min readHow to Analyze Insider Transactions with Python: A CEO Buying Case StudyWhen a CEO buys shares after their company’s stock has fallen hard, it's tempting to read the purchase as a vote of confidence. The person running the business knows more than the average investor, so00
NANikhil Adithyaninfreecodecamp.org·Jun 24 · 20 min readHow to Find Stock-Specific Moves in the S&P 500 with PythonOn June 12, 2026, SPY closed up 0.54%. EchoStar (SATS) dropped 11%. Lennar (LEN) dropped 4.9%. Most of the other 500 stocks in the index barely moved beyond what SPY’s own gain would predict. That gap00
NANikhil Adithyaninfreecodecamp.org·Jun 18 · 16 min readHow to Analyze Analyst Estimate Ranges with PythonMost financial models use analyst consensus as a single forward-looking input: revenue estimate, EPS estimate, EBITDA estimate, or some version of a forward margin assumption. That works, but it flatt00