Upgrades •$Avantor(AVTR.US)$: Citigroup Upgrades to Buy from Neutral - PT $28 •$丘奇&德怀特(CHD.US)$: Deutsche Bank Upgrades to Buy from Hold - PT $85 (from $90) •$康菲石油(COP.US)$: Erste Group Upgrades to Buy from Hold •$福特汽车(F.US)$: Morgan Stanley Upgrades to Overweight from Equal Weight - PT $14 •$慧荣科技(SIMO.US)$: Susquehanna Upgrades to Positive from Neutral - PT $108 •$沃尔玛(WMT.US)$...