Cramer's favorite spec plays, buy, sell or hold? By: CNBC.com News July 24, 2013 at 18:26 PM EDT Cramer reviews speculative picks made on Mad Money over the last 8 months. What now? Get all the details, here. Read More >> Related Stocks: Blackstone Inc Celldex Therapeutics Facebook Jazz Pharma Plc Radian Group Inc Virnetx Holding Corp W.R. Grace & Company