The Winklevoss twins are worth about $1.3 billion in Bitcoin alone

The Winklevoss twins have amassed a Bitcoin fortune worth about $1.3 billion as of Tuesday.
Bitcoin's price has exploded over the last two years, leading some experts to call it a bubble.
 
The Winklevoss twins made a big bet on Bitcoin — and it looks like it's paid off.
Cameron and Tyler Winklevoss have amassed a Bitcoin fortune worth about $1.3 billion as of Tuesday, according to estimates from the New York Times.
The twins bought about 120,000 Bitcoins back in when