The Fed's meeting Tuesday and Wednesday comes amid a flood of corporate earnings reports, with about 20% of the S & P 500 reporting that week.
The most important day for earnings is Thursday, when Apple , Alphabet and Amazon report after the bell.
The Nasdaq Composite was up 11% for the month as of Friday afternoon, well ahead of the 6.2% gain in the S & P 500.
Traders have been watching the S & P 500 edge closer to the key threshold of 4,100 , its high from December.
AAPL 1Y line apple Apple is also important because of the signals it can send about the strength of the consumer, supply chains and China's reopening.