Investors.com will undergo scheduled maintenance from 10:00 PM ET to 2:00 AM ET and some features may be unavailable. We apologize for any inconvenience. SoundHound AI (SOUN), a leader in conversational voice artificial intelligence for businesses, late Thursday beat Wall Street's targets for the third quarter and increased its full-year sales guidance. But SoundHound stock fell in extended trading. BREAKING: Stocks Fall Sharply For Week, But Bulls Make Stand Friday The Santa Clara, Calif.-based company los ...