Nasdaq OMX Group said on Wednesday its quarterly income fell 4 percent, still beating expectations, as weaker U.S. and European volumes offset market share gains in U.S. options and stocks.

The exchange operator, which also tried and failed to buy out rival NYSE Euronext in the second quarter, earned $92 million, down from $96 million a year ago.

Excluding one-time costs, it earned $112 million, or 62 cents per share, up from $108 million, or 52 cents, a year ago. Revenue grew 7 percent to $416 million.

Analysts on average expected Nasdaq to earn 60 cents per share on $413 million in revenue, according to Thomson Reuters I/B/E/S.

(Reporting by Jonathan Spicer, editing by Maureen Bavdek)