IPO Calendar

ZARS Pharma and Duff & Phelps are both expected to price this week. If successful, they would be only the second and third PE-backed IPOs to price in September, following Athenahealth. The first week of October should be busier, with the following companies on tap: BioHeart, Merrion Pharmaceuticals, Constant Contact, MAP Pharmaceuticals and China Digital TV Holding.