Check out the companies making headlines after the bell Monday:
After a record-smashing regular session for U.S. markets, after-hours trading offered few big moves.
Acorda Therapeutics surged more than 31 percent after two patents challenges by Hayman Capital's Lyle base were denied.
Charter Communications' stock rose about 1 percent after Director David Merritt sold 2,500 shares of its class A common stock after the bell.
United Bankshares declared a third-quarter dividend of 32 cents a share shortly before the closing bell. Shares of United Bankshares, which offers commercial and retail bank services, rose about 5 percent after hours.
Jack Henry & Associates, which supplies payment processing solutions, declared regular quarterly dividend of 25 cents a share earlier on Monday. The stock was up about 4 percent after-hours.
Biotech Growth purchased 100,000 shares of biopharmaceutical Radius Health a few moments before the closing bell. Shares rose about 3 percent in after-hours trading, before cooling.