Investors interested in Medical stocks should always be looking to find the best-performing companies in the group. Artivion (AORT) 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. Artivion is a member of our Medical group, which includes 1066 different companies and currently sits at #4 in the Zacks Sector Rank. The Zacks Sector Rank gauges t ...