Check out which companies are making headlines after the bell Wednesday:
Alcoa - Credit ratings agency Moody's downgraded the steelmaker's credit rating to "Ba1" from "Baa3," pushing its recommendation to junk status with a "stable" outlook. Shares slipped in extended-hours trading.
Avago Technologies - The Singaporean semiconductor company posted earnings of 61 cents a share, excluding one-time items, on sales of $562 million. That topped analysts' expectations of 52 cents a share on revenue of $557 million. In addition, the company said it expects to see sequential revenue growth of between 6 percent and 9 percent. Shares rose in extended-hours trading.
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Priceline.com - The travel website announced a $1 billion private offering of convertible notes and a share repurchase program of up to $1 billion. Shares edged higher in extended-hours trading.
Aetna - The health insurance company said it expects to reaffirm its full-year 2013 earnings guidance of between $5.70 a share and $5.85 a share, versus Wall Street expectations for $5.80 a share. Shares were largely unchanged in extended-hours trading.
Royal Caribbean - The cruise company said the fire on its Grandeur of the Seas cruise vessel will likely lower earnings by 10 cents a share. The vessel has been taken out of service and the company expects that it will take almost six weeks to complete the repair efforts. Shares were largely unchanged in extended-hours trading.