The U.S. District Court for the Western District of Texas recently clarified the applicable rate for the calculation of prejudgment interest under the Texas Securities Act (TSA). In FDIC v. Deutsche Bank Securities Inc., the FDIC, acting as receiver for Guaranty Bank, brought claims against the defendant bank under the TSA stemming from the sale of residential mortgage-backed securities prior to the financial crisis. While discovery was ongoing, the defendant moved for partial summary judgment…