Cramer: Know your IPO! Good, bad & ugly biotechs By: CNBC.com News October 07, 2015 at 18:25 PM EDT Jim Cramer helps investors to navigate the flurry of recent biotech IPOs. Find out what could be a cash trap or a real opportunity. Read More >> Related Stocks: Aclaris Therapts Edge Therapeut Cm S Novocure Ltd Ord Sh