Computers do not trade with logic They are programmed in linear thinking.their comprehension is not like human intelligence . They traded extremes , either oversold or overbought . This is the indication when you have to sell and buy this will separate you from other people timing when to step in and went to step out .these markets have changed your not like what they used to be , you're not very logical that's due to the computers in control .The algorithm and high-frequency traders trade on global eventsand that's how they price set The pre-open market .60% of the trades are all phantom the simply trade in the dark pool between themselves that's how they're able to set the price you're not losing this years like me and you just simply Setting price and controlling the stock and manipulating the price . We never run out of shares because it's the same shares traded back-and-forth to themselves and they get paid to do this artificial volume ,pretending to be a marketmaker.but in reality creating heavy volatility and that is your markets of today .