» Bitcoin gets 'less risky the higher it goes': Legendary investor Bill Miller breaks down why the cryptocurrency could surge 100% in 2021 Bitcoin gets 'less risky the higher it goes': Legendary investor Bill Miller breaks down why the cryptocurrency could surge 100% in 2021 Emily GraffeoJan 10, 2021, 20:22 IST Heidi Gutman/CNBC/NBCU Photo Bank/NBCUniversal/Getty Images Legendary investor Bill Millertold CNBC on Friday he sees bitcoin surging 100% in 2021 as more investors add the coin to their portfolios as a hedge against inflation. "One of the things that's interesting about Bitcoin is that it gets less risky the higher it goes, and that's the opposite of what happens with most stocks," the Miller Value Partners founder said.