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

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

Shannon Saccocia is a buyer of Paypal Holdings Inc (NASDAQ: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 (NYSE:MPC) on Friday. He noticed a big call options volume in the name.