Shares of CVS Health (CVS) have been strong performers lately, with the stock up 17.1% over the past month. The stock hit a new 52-week high of $73.23 in the previous session. CVS Health has gained 63% since the start of the year compared to the -2.3% gain for the Zacks Medical sector and the 0.7% return for the Zacks Medical Services industry.What's Driving the Outperformance?The stock has a great record of positive earnings surprises, as it hasn't missed our earnings consensus estimate in any of the last ...