This month's remaining IPO calendar includes expected pricings from Comverge Inc. (4/12), Tailwind Financial (4/12), Cinemark Holdings (4/23), OceanFreight Inc. (4/24), Ocean Power Technologies (4/24), MetroPCS Communications (4/25), Pharmasset Inc. (4/25), CardioMEMS (4/25) and Edenor (4/25).