(July 5, 2018, 1:36 PM EDT) -- BALTIMORE — A federal judge in Maryland on July 3 ruled that investors in a shareholder derivative lawsuit failed to plead transaction causation in arguing that certain current and former officers and directors of a real estate investment trust (REIT) and the company that managed it violated federal securities law and breached their fiduciary duty in negotiating the renewal of the REIT’s management agreement (In re AGNC Investment Corp. Stockholder Derivative Litigation, No. 16-3215, D. Md., 2018 U.S. Dist. LEXIS 110711)....