After-Hours Buzz: ADSK, CZR, APOL & More

Check out which companies are making headlines after the bell Monday:

Autodesk - The design software company posted earnings of 53 cents a share, excluding one-time items, on sales of $607 million, topping expectations for 49 cents a share on revenue of $586 million. Meanwhile, the company handed in current-quarter earnings and revenue outlook that fell short of Wall Street projections, sending shares lower in extended-hours trading.

(Read More: Monday Selloff: Dow Skids 200, S&P Ends Below 1500; Vix Up 35%)

Caesars Entertainment - The gaming, hospitality and tourism company posted a loss of $3.44 a share on revenue of $2.02 billion, widely missing expectations for a loss of $2.04 a share on sales of $2.11 billion. Shares slumped in extended-hours trading.

Apollo Group - The for-profit education company announced that its University of Phoenix has been recommended to be placed on "Probation" status by The Higher Learning Commission (HLC), according to an 8K filing. Shares fell in extended-hours trading.

Shanda Games - The online video game company posted earnings of 15 cents a share, excluding one-time items, edging past expectations by a penny, on revenue of $172 million, matching Wall Street estimates. Shares were largely unchanged in extended-hours trading.

Oneok - The natural gas distributor posted earnings of 53 cents a share, topping expectations for 45 cents a share. But the company reduced its 2013 earnings guidance and cut its projected dividend increase for July to 2 cents a share from 3 cents a share.

Humana - The health insurance company said its CFO James Bloem will retire at the end of the year. Shares were unchanged in extended-hours trading.

International Paper - Jefferies initiated coverage of the paper and pulp company with a "buy" rating and a price target of $52.

Palo Alto Networks - BMO Capital initiated coverage of the network security company with a "market perform" rating and a price target of $58.

Radian - The mortgage insurer announced concurrent offerings of 30 million shares of common stock and $200 million of convertible senior notes through Morgan Stanley and Goldman Sachs. Shares declined in extended-hours trading.

—By CNBC's JeeYeon Park (Follow JeeYeon on Twitter: @JeeYeonParkCNBC)

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