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• Yum Brands Inc. rose $1.21 to $69.05 after the owner of KFC, Pizza Hut and Taco Bell announced a smaller-than-expected drop in its sales in China for the months of January and February following a food scare over its chicken suppliers.

• VeriFone Systems gained $1.26 to $21.72 after the company, a leading maker of terminals for electronic payments, said late Monday that its CEO is stepping down after recent stumbles cut the company’s stock price nearly in half.

• Costco rose $1.84 to $104.20 after reporting that its fiscal second-quarter net income climbed 39 percent. The discount retailer pulled in more money from membership fees, its sales improved, and it also recorded a large tax benefit. Even without the tax benefit, the results were better than analysts had expected.