Why we need to back test stock? Jack Angel shares: To know the support and resistance and to know when to buy or sell. Why we need to back test? Belle Layos shares learned about bounce trading first (from Money Growers PH) reference: ZF's Bounce Plays 101 , Kapitan Kidlat's 3 days to Kill , back test to test mastery and trade setup backtest tools Excel to input data and Word to see charts Belle Layos setup for bounce play previously trending with parabolic move 3 day declining rule previous Darvas must act as support Use Fibonacci retracement with bounce in 38.2%, 50% and 61.8% (From Jason Cam) Candle should not close below retracement Should have reversal signs like doji or weak candles Drying volume, should dry up Sell on the 3rd day of bounce Then on an Excel table, she has the following columns Count on how many of the above criteria has been met Name of stock/ symbol of stock Date bounce point Fibonacci Previous candle Volume ...