News flow for short sellers is picking up today, with Arbor Realty (NYSE:ABR) among the companies seeing big-time selling pressure build today. At the time of writing, shares of ABR stock are down more than 19%, wiping out the year-to-date gains the stock had seen as of yesterday.This move comes on news of a probe by the Department of Justice (DOJ) over the company’s lending practices and its loan book. Short sellers appear to have followed suit, with the commercial mortgage real estate investment trust (RE ...