Shares of ChromaDex (CDXC) have been strong performers lately, with the stock up 72.9% over the past month. The stock hit a new 52-week high of $6.18 in the previous session. ChromaDex has gained 301.4% since the start of the year compared to the 3.1% move for the Zacks Medical sector and the -2.3% return for the Zacks Medical - Biomedical and Genetics industry.What's Driving the Outperformance?The stock has an impressive record of positive earnings surprises, as it hasn't missed our earnings consensus est ...