Day trader is betting his last $250,000 that Apple shares will crash today

One of the oldest adages about investing is that you can't time the market. Sure, you can do your best to try, but if you're hoping to accumulate a vast amount of wealth a'la Warren Buffet, you might want to try investing for the long-term instead of gambling your money away with multiple trades a week. Still, that sound piece of advice has never stopped enterprising folks from trying to strike it rich. And with Apple slated to post its earnings later today, one day-trader who frequents the Wall...