Stocks to watch Monday: Vulcan, Jakks Pacific By: MarketWatch December 19, 2011 at 06:43 AM EST An earnings warning and a pair of developments on the M&A front stand out among the early corporate headlines Monday. Read More >> Related Stocks: Jakks Pacific Inc Macy's Martin Marietta Materials Pepco Holdings Red Hat SAP Ag ADR Shiloh Inds Inc Vulcan Materials