'Fast Money Halftime Report' Picks For August 6

On CNBC's "Fast Money Halftime Report," Kevin O'Leary said he is buying more Alibaba Group Holding Ltd - ADR BABA.

Degas Wright likes Costco Wholesale Corporation COST because of its profitability and valuation. He added more shares to his long position.

Shannon Saccocia is a buyer of Paypal Holdings Inc PYPL. She advised viewers not to fear the e-commerce names because the digital acceleration is going to continue.

Jon Najarian bought calls in Marathon Petroleum Corp MPC on Friday. He noticed a big call options volume in the name.