Instead of guessing without any basis to back up your guess, you should take the time to read a little.
Just recently CrossProfit ran a three article series on ABC, CAH and MCK. If you don't know who the other two are then you shouldn't be in this stock. Do your own DD.
The site is http://www.crossprofit.com and look up all three symbols. Personally I used this site to guide me through the summer last year on another stock (XOM). I'm not sorry.
BTW, there was another excellent article on http://www.seekingalpha.com on CAH back in August or September last year - 'waiting for an entry point' - as I recall. Boy, was that good guidance. Remember, do your own DD.