Bitcoin is the most stable cryptocurrency in the world, Bill Miller said in an statement. Bill Miller is an Billionaire invester who believes Bitcoin is a lot like Gold. According to him, most of the altcoins are worthless but Bitcoin is the most stable and profitable cryptocurrency. Earlier in this month another billionaire invester Marc Lasry of Avenue capital group said that Bitcoin is the virtual currency and it attracts most of the new investor. Currently total Bitcoin market capitalization is around $140 billion which is approx 47% of total cryptocurrency market.