DaVita HealthCare (DVA) has recently been on Zacks.com's list of the most searched stocks. Therefore, you might want to consider some of the key factors that could influence the stock's performance in the near future.Shares of this kidney dialysis provider have returned -3.7% over the past month versus the Zacks S&P 500 composite's +1.8% change. The Zacks Medical - Outpatient and Home Healthcare industry, to which DaVita HealthCare belongs, has lost 0.8% over this period. Now the key question is: Where coul ...