News Summary: IAC stock shaken after outlook mixup

CONFUSED INVESTORS: Shares of IAC/InterActiveCorp declined Wednesday amid investor confusion over the company's 2013 guidance following a mistake by a financial-information provider.

RESULTS STRONG: IAC's third-quarter results, released before the market opened, beat Wall Street's expectations and the Internet company's stock was up slightly in early trading.

WHAT HAPPENED? FactSet misinterpreted IAC's statement that it expects to report an operating loss for its "media and other" segment in 2013 as being for the whole company. It issued a correction. In the confusion, the Nasdaq exchange briefly halted trading in IAC stock. IAC's shares closed more than 8 percent lower.