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After-hours buzz: Broadcom, Ambarella, Gap & more

A man passes in front of the New York Stock Exchange.
Lucas Jackson | Reuters
A man passes in front of the New York Stock Exchange.

Check out the companies making headlines after the bell Thursday:

Shares of Broadcom rose in extended trading after the semiconductor company reported better-than-expected earnings in the second fiscal quarter. The company earned $2.53 per share, adjusted, on revenues of $3.56 billion, better than the $2.38 per share on $3.55 billion in revenue predicted by a Thomson Reuters consensus estimate.

Fellow semiconductor companies Qorvo and Skyworks also popped on the news. Broadcom, which recently completed a merger with Avago, also raised its dividend by 1 cent to 50 cents per share.

"Our increased scale and diversity is already proving very resilient, with strong product cycles in our now largest segment, wired, offsetting weaker demand in our enterprise storage and wireless segments," CEO Hock Tan said, in a statement.

Shares of fellow semiconductor company Ambarella whipsawed after the bell, landing slightly higher after an earnings report. The company, which specializes in HD video compression for cameras, posted earnings of 34 cents per share, adjusted, on revenue of $57 million. Wall Street had expected 28 cents per share on $57 million in revenue, according to a Thomson Reuters consensus estimate.

GoPro's stock inched higher after Ambarella's results.

Gap shares climbed after the bell, even though its May comparable sales fell 6 percent, compared to a 1 percent decrease last year. The retailer, which owns brands like Banana Republic and Old Navy, said that sales improved leading into Memorial Day weekend. Because of the fiscal calendar, that could negatively impact May sales but benefit June sales.

Citigroup's shares edged lower after the CEO said he expects "roughly flat" quarter-over-quarter net income in the second fiscal quarter, according to Reuters. Still, Citigroup's trading revenue is set to be up slightly from the first quarter, said Michael Corbat, who spoke at an investor conference in New York.

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