Box, an online document storage and sharing service geared to large companies, has filed for an IPO, according to Quartz. Morgan Stanley (MS), Credit Suisse (CS) and JPMorgan Chase (JPM) have been picked as Box's top underwriters, said Quartz. The N.Y. Times is targeting Q2 for its IPO. Box is getting a head start on going public by jumping in front of consumer-focused online storage firm Dropbox. Both Box and Dropbox have been among the hottest startups expected to go public this year after both generated growth and heavy venture capital funding. Other hot tech IPOs expected are Pinterest, Square and Alibaba.