Taco Bell Stock Drops Amid Diarrhea Scandal — photo 1 of 4

Taco Bell's stock took a sharp dive on Tuesday as news spread about a possible link between the fast-food chain and a stomach illness outbreak causing severe diarrhea. Investors reacted quickly, sending shares of Yum Brands, which owns Taco Bell, down 4.5% to below $160 per share. The decline continued in after-hours trading.