Twitter and become a fan on Facebook.
The Dow Jones U.S. Travel & Leisure Index has been falling since Thursday's attack in Barcelona, Spain.
Bitcoin's rapid price ascent and a related influx of "internet coin offerings" are garnering institutional investors -- even as they draw scrutiny from the SEC.
But, says Jim Cramer, almost every winning stock he's ever mentioned is overvalued or has been overvalued before its run.
The online travel giant has been stung by slower growth abroad, along with heavy search ad spending needs.