The share market is heading for another strong year, but the short sellers are working hard to pull down some champion stocks on the ASX: Blue chip CBA and IPO darling Guzman Y Gomez are among the targets.What does it mean for investors?  In this episode, we cover: Short order - Why do traders believe top stocks are heading for a fall? The tricky business of small-cap stock selection What happened to luxury goods seller Cettire? Stock splits - Why they push up the share price  Dean Fergie of Cyan Investment Management joins wealth editor James Kirby in this episode  See omnystudio.com/listener for privacy information.