Online storage company Box has secretly filed for an IPO, according to Quartz and the Wall Street Journal. Box last year raised $100 million in venture funding and is valued at approximately $2 billion. An IPO could bring an additional $500 million to the company during a time when competition between rival Dropbox is intensifying. Box is reportedly taking advantage of a provision in the JOBS Act, which allows companies with an annual revenue of less than $1 billion to file its IPO prospectus confidentially with the Securities and Exchan
