For people who day trade, the day trading gurus teach you how to short stocks which is fine and dandy. How many of the day trading gurus tell their students that shorting stocks by borrowing shares, the risk is unlimited to the upside. Most of them probably, do not tell their students. If they did, the allure of day trading would fade because their gains would be much, much less and limited to the upside. That is not counting, staying 100% in cash, after they exit their long positions. Most of the stocks day traders trade are very volatile, low float stocks that jump up and down. How many of these students, without a clue, will end up blowing their account?