December S&P 500 E-Mini futures (ESZ24) are trending down -0.09% this morning as investors weighed the sustainability of China’s rally and looked ahead to remarks from a Federal Reserve official as well as an earnings report from semiconductor giant Micron. In yesterday’s trading session, Wall Street’s main stock indexes ended in the green. Nvidia (NVDA) climbed about +4% following a report from Barron’s that the company’s chief executive officer, Jensen Huang, was done selling his shares. Also, stocks exposed to China surged after Beijing announced a slew of stimulus measures, with JD.com (JD…