Here is a chart with a good track record of SPX price lows. It's the Nasdaq McClellen Oscillator Ratio Adjusted. Note when it pokes its nose 'below' the lower standard Bollinger Band, that tends to be a price low in the SPX. What is important is that the 'rally' that consistently occurs after is not necessarily strong. May only be a bounce back from very oversold conditions and then a retest. So while an oversold bounce back is very likely when seen the magnitude of the bounce is always questionable before price retraces its bounce again. So it boils down to "Jack be nimble Jack be quick" type of thing and not 'assume' it's up,up and away again. Not sure of what you'll see with this chart as what I see and what is visible to others is often different and restricted.