 12.10pm: US stocks mixed at lunch US stocks were mixed at lunch as traders mulled over the beginning of Federal Reserve chairman Jerome Powells two days of testimony before Congress. The Dow Jones Industrial Average was up around ten points at 34,889; the SP 500 was up two points at 4,371 and the tech heavy Nasdaq was down four points at 14,673 Earlier, FTSE 100 closed down around 33 points, or 0.47, at 7,091 in London. 