On Friday, the Invesco S&P 500 Equal Weight ETF (RSP), which follows the S&P 500 Equal Weight Index (EWI), rose 0.4%. "The Apple growth story is plowing straight ahead and supply chain improvements potentially on the horizon is a major bullish data point not just for Apple, but the entire tech sector to digest this morning," Wedbush Securities analyst Daniel Ives told Reuters. Updated economic data on Friday revealed that the core personal consumption expenditure price index, the Federal Reserve's preferred gauge for inflation, was up 0.5% in December, mirroring expectations.