After-hours buzz: KMI, FOSL, CPB & more

Check out the companies making headlines after the bell Tuesday:

Shares of Kinder Morgan popped in extended trading Tuesday after famed holding company Berkshire Hathaway, helmed by celebrity investor Warren Buffett announced a 26 million share stake in the natural gas and refined petroleum products firm.

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.

Fossil Group's stock traded higher after hours after the maker of watches, sunglasses and wallets reported better-than-predicted quarterly results. The company announced earnings of $1.46 per share on fourth-quarter revenue of $993 million. That's higher than the $1.30 on $924 million expected on average by analysts, according to Thomson Reuters.

Food staples retailer Campbell Soup Company shares saw a small after-hours spike after it said it expects second-quarter results to be stronger than first anticipated.

In addition to beating analysts' expectations in the latest quarter, Campbell raised its guidance for fiscal 2016. The company now expects a 9 to 12 percent increase in adjusted earnings per share, up from 4 to 7 percent.

Shares of health IT firm Cerner fell sharply after the bell after the company reported its quarterly earnings. The company guided investors to expect revenue in the range of $1.15 billion to $1.2 billion for the fiscal first quarter, at the lower end of the $1.19 billion expected by Wall Street, according to the Associated Press.

Comerica shares bounced after the company said it discovered irregularities in a single customer loan relationship. The financial services firm is revising its fourth quarter results after an investigation found there was "significant doubt" that a certain loan would be repaid, it said in a statement.

And shares of Rackspace sank in extended trading after the cloud computing company said it expects revenue in the range of $517 million to $521 million for the current quarter ending in April, below the $531.8 million expected by analysts surveyed by the Associated Press.

Rackspace has seen shares decline 28 percent so far this year as fellow software as a service companies like Tableau and Splunk were dinged in a turbulent earnings season.

— Reuters, AP, and CNBC's Alex Crippen contributed to this report.