1 .80 percent of volume is institutional/ 80+ percent of volume usually is in the morning and end of day 2. 60% of stocks are algo 3. The more times price touches a level the weaker the level gets 4 .Day traders don't usually trade midday 5. Don't short at noon 6. Earning winners usually don't get shorted at 12:00 and if on vwap should bounce sometimes and if under should at least to go back to vwap depends on certain things although 7. If the chart is ugly then the price action will be and ugly as well 8. Friday afternoon if stock holds morning high potential for breaking out is high for a short squeeze