Mealey's (June 30, 2021, 12:47 PM EDT) -- WASHINGTON, D.C. — Petitions seeking review of four Securities and Exchange Commission orders amending the national market system (NMS) were untimely filed under provisions of the Securities Exchange Act because 13 nationally registered stock exchanges filed their challenges 65 days after the SEC orders were entered, a District of Columbia Circuit U.S. Court of Appeals panel ruled June 29 in dismissing the exchanges’ petition for review....