Why BlackBerry Is Soaring While AMC and GameStop Fall

Why BlackBerry Is Soaring While AMC and GameStop Fall

Shares of BlackBerry (NYSE: BB) are soaring almost 10% higher in morning trading Wednesday while those of AMC Entertainment Holdings (NYSE: AMC) and GameStop (NYSE: GME) were falling 5% and 7%, respectively. GameStop is being upgraded to the S&P 400 index beginning Aug. 4, replacing Weingarten Realty Investors, which is being acquired by Kimco Realty.