[henryfjordan]

A lot of the craziness is from exactly what bets they are making. The cool thing to do is to buy "Out of the Money" options (where $TSLA might cost $420/share but the options are for $450), sometimes with borrowed money. These options are dirt cheap, so you can buy a ton of them. Usually you lose your whole investment when the options expire, but if the stock jumps over the price of the option you can make a ton of money.