Shares of telecommunications infrastructure provider Dycom (NYSE: DY) stock are diving -- down 16% as of 10:35 a.m. EDT after reporting a swing and a miss on both sales and earnings for its fiscal Q1 2019. (And no that's not a typo. Dycom is about a year ahead of everyone else when it comes to its fiscal calendar).Looking to report Q1 sales of $736.1 million, Dycom delivered $731.4 million this morning instead.