 Shares of Penn National Gaming Inc. PENN, 1.16 slumped 1.7 in premarket trading Thursday, after the online gaming and sports betting company and Barstool Sports partner reported second-quarter profit that missed expectations but revenue that topped, as rising expenses led to a drop in margins. Net income dropped to 26.1 million, or 15 cents a share, from 198.7 million, or 1.17 a share, in the year-ago period. 