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After-hours buzz: SolarCity, Charter Communications & more

Traders work on the floor of the New York Stock Exchange.
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Traders work on the floor of the New York Stock Exchange.

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.

Solar equipment supplier SolarCity said its chairman, Elon Musk, purchased 123,510 of the company's shares. The stock rose more than 3 percent after the bell.

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.