Guides

• How to backtest a stock trading strategy in ChatGPT
  Backtest a stock or ETF strategy in ChatGPT by describing it in plain English: rules, 12 months of end-of-day prices, return, drawdown, Sharpe and win rate against a benchmark.
• How to forward-test a strategy without a brokerage account
  Forward testing runs a strategy on prices that arrive after you commit to it. Shadowfolio keeps a hypothetical shadow portfolio of your rules, updated after every US close, with no account or money.
• How to backtest the 200-day moving average strategy
  The 200-day moving average rule holds an asset while its price is above its 200-day average. How to test it on SPY or any US ticker, with a cash or bond fallback, in ChatGPT.
• How to test a momentum rotation strategy
  A momentum rotation holds the N assets with the best recent return and rebalances on a schedule. How to describe and backtest one on the S&P 500 or an ETF list in ChatGPT.
• Max drawdown, Sharpe ratio and win rate, explained
  What max drawdown, Sharpe ratio, win rate, volatility and exposure mean in a backtest, how Shadowfolio computes each, and how to read them together.