The people here talking about shorting bitcoin to moderate the bubble have no idea what they're talking about. Shorting a bubble is about the stupidest thing you can do. Here's how that math works: 1) You open a margin account with $10,000. 2) You borrow 25 BTC from your broker and sell them on the market at $200. You hope that the price crashes to $0 and your net profit will be $5,000. 3) What actually happens is th…
You are now $5,000 poorer. You received $5k from selling the BTC in step 2, which must be netted out against the $10k cover cost.