This website 12/14/25 blog forecasted that the S&P 500 (SPX) could be in a decline in late December 2025 to the 6,660 area.
The daily SPX chart courtesy of Trading View updates the action.

SPX has reached a Fibonacci .50 retracement of the November to December rally. Assuming Minute wave [c] of a presumed Elliott wave – Horizontal Triangle is not complete; SPX could reach the 6,660-target area sometime early in the week of 12/22/25 to 12/26/25.