Investors have been operating under uncertainty due to the government shutdown delaying economic data releases. Key economic data, including labor market and inflation figures, are set to be unveiled. The upcoming days could strongly impact the S&P 500 index, with critical economic data being released between Dec. 16 and Dec. 18. Investors are monitoring these reports closely to gauge the economy and potential Federal Reserve actions. The market looks set for a third consecutive strong year, but uncertainty remains due to various headwinds. Forecasts project key economic indicators like non-farm payrolls, retail sales, and the Consumer Price Index to provide insights on the economy and potential Fed actions.

Read more at Nasdaq: Why December 16 to 18 Could Be Big Days for the S&P 500 Index