(April 9, 2020, 4:16 PM EDT) -- DALLAS — A group of hydraulic fracturing companies on April 2 filed a petition for writ of mandamus in Texas state appeals court, contending that a lower court “clearly abused its discretion” when it disregarded federal substantive law and state procedure meant to “weed out defective claims” related to a shareholder class action brought against one fracking company in connection with its initial public offering (IPO) (In Re: FTS International, Inc., et al., No. 05-20-00189-CV, Texas App., 5th Dist.)....