Sinclair Broadcast Group (SBGI) and Nexstar Broadcasting (NXST) hit new highs Friday amid strong earnings growth buoyed by acquisitions and strong ad revenue. Both are among the top stocks in the 22-member radio-and-TV broadcasters' industry group, which was ranked No. 5 out of the 197 industries as of Friday's IBD. Sinclair, which provides local news, sports and other content to dozens of TV stations, jumped 13% in huge volume Friday, matching