(April 3, 2017, 4:19 PM EDT) -- DALLAS — A Texas federal judge on March 31 granted preliminary approval of a $100 million securities class action settlement between investors and Halliburton Co. and its CEO who were alleged to have issued certain misrepresentations regarding the company’s asbestos litigation liability, its financial condition and the benefits of a merger deal in violation of federal securities laws (The Erica P. John Fund Inc. v. Halliburton Co., et al., No. 02-1152, N.D. Texas)....