The following video is from Wednesday's Investor Beat, in which host Chris Hill and analysts Jason Moser and Matt Argersinger dissect the hardest-hitting investing stories of the day.

The Dow, S&P, and Nasdaq were all up double digits for the first four months of 2013. Should investors follow the old adage "Sell in May and go away"? To what extent should investors factor the calendar into their investment decisions? That story plus the four stocks making the biggest moves on Wednesday's market and two stocks you should have your eye on this week.