Xinhua/Wang Ying/ Getty Images US stocks were mostly higher on Friday, with the Dow notching its eighth straight winning day. The strong gains in May come ahead of a key CPI report, set to be released on Wednesday. Fed speakers throughout the day struck a slightly hawkish tone. US stocks traded higher on Friday, securing an eight-day winning streak for the Dow Jones Industrial Average.The gains came despite hawkish comments from two Federal Reserve officials on Friday.