FundstratFundstrat Founder Tom Lee isn't so positive on the stock market these days, but he's amplifying his bullish bet on bitcoin. In a note on Friday, Lee forecast that the cryptocurrency could rise to $6,000 a coin by the middle of next year. He said the big driver of this 29% rally through mid-2018 would be greater public awareness of bitcoin as a method of payment and as a store of value like gold.