Stocks were mixed on Friday morning following the Labor Department's revision to the inflation data. After seasonal revisions to CPI, December's reading was revised down to 0.2% from the prior 0.3% increase. November's CPI was revised up from a 0.1% increase to 0.2% after the adjustment. The seasonal adjustments are made annually, coinciding with January's CPI release, to account for price movements in the previous year. The S&P 500 gained 0.2% and in intraday trading t