I scalp ES reversal intraday. I found the opening and the first part of the morning (9:30-10:30 am) to be particularly productive due to the volatility. Kevin Haggerty said 90% of the time there is a reversal and 60% of the time the market reverse back the other way. I don't really look for them or try to fade the opening but when price gets to support/resistance and things confirm, I pull the trigger. I want to start looking for another time zone that is just as productive for reversals. Or if there are other time when market tends to trend that I should avoid. Any suggestion would be appreciated. I know there are articles out there on this but I would rather take it from actual trading experience. Here are the time-of-day bias (Eastern U.S. time) off the top of my head: 9:30-10:30 am Good for reversal from my experience. Notably the 10 am reversal time zone. It's been the best time for me. Many times I close my shop after this such as today. 11:30am - 12:00 noon Martini buying noted by Marty Schwartz. I found this to be true but I would not bet my money on it. Sometimes my trade looks dead before reaching the profit target then all of a sudden it got a second wind. 12:00 noon - 2:00 pm Lunch Doldrum. Many people said this is the worst time to trade. But when I used to trade pullback, I tested out this period to be a productive time. The pullback system would miss out a chunk of profit if I skip the lunch time. 2:00 - 2:30 pm Coming back from lunch? I remember this period has a lot of jerking around actions probably caused by the programs 2:30 - 3:00 pm Bond close at 3:00pm I have not really looked at the data but maybe 2:00 - 3:00 pm could be another good period for entering reversal trade? I am not sure. 3:00 - 3:30 pm Bond closed and usually if it is trending, it tends to continue pretty persistently especially when people got caught. I would consider holding a trade if it is going my way. When I tested my old pullback setup, it does not show profitability during this last hour of trading (3-4pm). 3:30 - 4:00 pm All the institutions have to balance out their arbitrage positions during the last hour so it can be pretty random. Please correct me if I am wrong and give me your feel for ANY of the intraday time zone whether you are trading trend breakout, pullback or reversal. Any little piece of input would be appreciated. Thanks!