After-hours buzz: P, ALSN, TXRH & more By: CNBC.com News July 31, 2017 at 17:41 PM EDT Check out which companies are making headlines after the bell on Monday: P, ALSN, CGNX, TXRH & more. Read More >> Related Stocks: Allison Transmission Holdings Cognex Corp Pandora Media Inc Texas Roadhouse Inc U.S. Silica Holdings Inc