Alcoa reported quarterly revenue that beat analysts' expectations on Thursday, but its earnings came up short.
After the earnings announcement, the company's shares fell more than 3 percent in extended-hours trading. (Click here to get the latest quotes for Alcoa.)
The company posted fourth-quarter earnings excluding items of 4 cents per share, down from 6 cents a share in the year-earlier period.
Revenue dropped to $5.59 billion from $5.90 billion a year earlier.
Analysts had expected the company to report earnings excluding items of 6 cents a share on $5.34 billion in revenue, according to a consensus estimate from Thomson Reuters.