LOS ANGELES--(BUSINESS WIRE)--Glancy Prongay & Murray LLP, a leading national shareholder rights law firm, today announced that it has commenced an investigation on behalf of SLM Corporation a/k/a Sallie Mae ("SLM†or the "Company†) (NASDAQ: SLM) investors concerning the Company's possible violations of the federal securities laws. IF YOU ARE AN INVESTOR WHO LOST MONEY ON SLM CORPORATION (SLM), CLICK HERE TO INQUIRE ABOUT POTENTIALLY PURSUING CLAIMS TO RECOVER YOUR LOSS. What Happened? On A. ...