(Reuters) - Online music streaming service Pandora Media Inc (N:P), reported lower-than-expected quarterly revenue as growth in mobile advertising slowed down, sending shares down 21 percent in extended trading.
Net income rose to $12.3 million, or 6 cents per share, in the fourth quarter ended Dec. 31, from $8.9 million, or 4 cents per share, a year earlier.
Revenue rose to $268 million from $200.4 million.