Investors interested in Medical stocks should always be looking to find the best-performing companies in the group. Acadia Healthcare (ACHC) is a stock that can certainly grab the attention of many investors, but do its recent returns compare favorably to the sector as a whole? Let's take a closer look at the stock's year-to-date performance to find out. Acadia Healthcare is one of 1077 individual stocks in the Medical sector. Collectively, these companies sit at #5 in the Zacks Sector Rank. The Zacks Secto ...