Snap, the company behind popular messaging app Snapchat, has hired bankers as it prepares for an initial public offering as early as March.<br />Morgan Stanley and Goldman Sachs will lead the deal, while JPMorgan, Deutsche Bank, Allen & Co., Barclays, and Credit Suisse will be joint bookrunners.<br />Snap has told investors that it expects to make between $250 million and $350 million in advertising revenue this year.