Digital payment platform PayPal Holdings Inc (NASDAQ:PYPL) is up 3.4% at $63.13 at last glance, after an upgrade from Mizuho to "buy" from "neutral." The firm also threw in a hefty price-target hike to $90 from $68, a 47.4% premium to last session's close, praising the company's Fastlane option, which aims to boost the speed of guest checkout. It's also worth noting that PayPal announced that it was launching an ad network based on user purchase data from millions of its shoppers earlier this week. Headed f ...