S&P500 broke above 4000 today.  Below is the daily chart with the Parabolic SAR indicator.  Looking back at the previous 3 times when S&P 500 broke the all time high, we could see a similar pattern.

On 12/28/2020, the Parabolic SAR turned green. The high on that day was 3740.  On 1/8/2021, it reaches the all time high then.  It was 3826.  From 3740 to 3826, it was a 2.3% increase.  It took 9 trading days to achieve.

On 2/4/2021, the Parabolic SAR turned green. The high on that day was 3871.  On 2/16/2021, it reaches the all time high then.  It was 3950.  From 3871 to 3950, it was a 2.04% increase. It took 8 trading days to achieve.

On 3/9/2021, the Parabolic SAR turned green. The high on that day was 3903.  On3/17/2021, it reaches the all time high then.  It was 3983.  From 3903 to 3983, it was a 2.05% increase.  It took 7 trading days to achieve.

If it continues this pattern, the projected high would be 4062 to 4072.  It might reach the target next week or the following week.