Among a string of IPOs launching this morning is Calabasas biotech Kythera Biopharmaceuticals Inc., whose shares opened 16 percent higher than the $16 offer price, the Wall Street Journal reports. And in a sign of the real estate market’s recovery, Realogy Holdings Corp., which franchises Century 21, Coldwell Banker, and other brand names, also got off to a strong start. The New Jersey company opened 22 percent above its $27 offer price. Both stocks continued to gain in morning trading.