UnitedHealth Group (UNH) 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 largest U.S. health insurer have returned +1.7% over the past month versus the Zacks S&P 500 composite's +3.6% change. The Zacks Medical - HMOs industry, to which UnitedHealth belongs, has gained 4.3% over this period. Now the key question is: Where could the stock be headed in ...