$SPX
SPREAD on Mon Mar 23, 2020 between day high &amp; day low = 108.87

SO... IF SAME SCENARIO being played TODAY

Day high = 3123.53 - 108.87
= 3014.66 = approx. 200 MA
OR 
= JUNE 10, 2020 DAY HIGH of 3223.27 area on the "OPEN" sheet

neat, eh!