Have you been paying attention to shares of Tenet Healthcare (THC) ? Shares have been on the move with the stock up 15.4% over the past month. The stock hit a new 52-week high of $156.6 in the previous session. Tenet Healthcare has gained 103.8% since the start of the year compared to the 8.6% move for the Zacks Medical sector and the 38.4% return for the Zacks Medical - Hospital industry. What's Driving the Outperformance? The stock has an impressive record of positive earnings surprises, as it hasn't miss ...