Market Insider

After-hours buzz: Athenahealth, Select Comfort & More

Traders work the floor of the New York Stock Exchange.
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Check out which companies are making headlines after the bell Thursday:

Athenahealth - The company posted first-quarter earnings per share, excluding items, of 12 cents on $163.0 million in revenue, below estimates. Its shares cratered to $130 in after-hours trading and were lately down 0.4 percent at $145.00.

Select Comfort - It reported earnings per share of 31 cents on $276.41 million in revenue, versus estimates of EPS of 32 cents on sales of $274.27 million. Its shares gained in after-hours trading.

Advanced Micro Devices - The chip maker posted first-quarter earnings per share of 2 cents, excluding items, on $1.40 billion in revenue, topping expectations. Its shares rose in after-hours trading.

Hub Group - The transportation management company tallied first-quarter earnings per share of 33 cents on $848.5 million in revenue. Its shares fell in after-hours trading.

—By CNBC's Kate Gibson

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