E-commerce stock eBay Inc (NASDAQ:EBAY) is up 1.5% before the bell following a bull note from Citi. Following a period of rating suspension, the Wall Street analyst upgraded EBAY to "buy" from "neutral," citing an improved outlook, a return to margin expansion, and earnings upside. In separate news, eBay will reportedly no longer take American Express (AMEX) due to higher-than-usual fees.On the charts, eBay stock is looking to make a run at its two-year highs of $55.15 from May 28. The security recently bou ...