Cardinal Infrastructure Group is trading 10.6% down at $25.68; no new company-specific catalyst clearly explains the decline. - The broader market is lower: the S&P 500 is down 0.68%, the Nasdaq down 0.75%, and the Dow down 1.16%. - A law firm published an October 7 reminder of its ongoing securities-fraud investigation concerning statements about the A.L. Grading Contractors acquisition. - The reminder alone does not establish the cause of this session’s decline.