I came across a S/R levels (4), which catches H/L of the session on pretty consistent basis. The calculation is based on previous day O/H/L/C and current day open. The function is locked.

Attaching the data for the past 5 years and wondering if anyone knows/interested in uncovering the formula for these calculations?

There is no definition for price to "hold the daily pivot" or to "break the daily pivot" or for support or resistance. Why worry about how they are calculated?

ArbTrader 

I came across a S/R levels (4), which catches H/L of the session on pretty consistent basis. The calculation is based on previous day O/H/L/C and current day open. The function is locked. Attaching the data for the past 5 years and wondering if anyone knows/interested in uncovering the formula for these calculations?

I am not clear on your request.

Are you saying the L1, L2, L3, and L4 are calculated from the prior day's OHLC and that the current day's activity often hits these levels?

I browsed at some of your SP500 data for the last 5 days in September 2021 and was not able to see those levels been hit. What is the tolerance?

Do you mind pinpointing out on the month of September 2021 all the levels that satisfy your condition?

JT