Movers roundup: Rosetta Stone shares fall as 1Q loss widened; Orthofix shares fall on results

Among the stock activity stories for Thursday, May 9, from AP Business News:

— Rosetta Stone Inc. shares tumbled after the foreign language education company said that its first-quarter loss widened and it posted lower-than-expected sales.

— Orthofix International N.V.'s shares sank after the medical device company reported a disappointing first quarter.