S&P ROLLING WEEKLY SEASONALS FOR THE NEXT MONTH SEP26-OCT26

On the left side of the below table are the rolling weekly seasonals for the upcoming month Sep26-Oct26.

As of Sept26, the S&P is up 13.1% for 2026.

On the right side of the table are the rolling weeklys for those years in which the trailing calendar year was up 5-20%.

Interpret as you choose but hard not to notice thaT in those prior 24 years in which the S&P was up (similar to 2026) 5-20%, the first week of October was 17-7 with the one standard deviation (1.65%) moves 8-2.