TESLA WATCH: Elon Musk Pay Deal In Focus No frills eatery Denny's (DENN) said late Monday it had agreed to be taken private by a group of investment firms in a deal valuing the company at $620 million. Three groups joined forces to purchase the classic American diner chain, founded in Lakewood, Calif., in 1954. TriArtisan Capital Advisors is an established New York-based private equity investment firm and… Take a Trial Today Get instant access to exclusive stock lists, expert market analysis and powerful to ...