Sam Gustin for Time:

Facebook’s Wall Street investment banks warned top clients of new doubts about the social network’s financial prospects just days before the company’s IPO, according to a series of reports that emerged Tuesday. After receiving briefings from Facebook executives, analysts at the banks lowered their financial forecasts for big institutional clients, some of whom scaled back plans to buy Facebook stock, even as the banks raised the IPO price and number of shares amid a frenzy of hype.