Affymetrix

Last Week's Biggest Market Head-Scratchers

Wall Street can be fickle, leaving investors scratching their heads in bewilderment. Some of last week's biggest surprises, blunders, and flat-out boneheaded moves included Morgan Stanley's downgrading of Google, another step toward a LivingSocial IPO, and irrational exuberance with respect to Wendy's stock.