A Wall Street analyst has developed a new index that aims to inform investors when it is the best time to snap up bitcoin (BTC), reports CNBC. The index uses a scale of 0 to 100 and relies on such factors as the total number of winning trades and volatility, according to the report. Fundstrat Global Advisors co-founder Thomas Lee told CNBC that the index has its best 12-month performance when it is below 27 and that the bitcoin misery index is currently at 18.8, its lowest mark since Sept. 6, 2011. Read more here.