I wouldnt say 1550.
As a safety, I would use a 3% margin like most traders do. So on March 24, 2000 the SPX reached a high of 1,552.87.
1552.87X1.03=1599.4561.
Round it up, 1600. Thats the magical number to hit. Not just to hit, but to smash with volume. If that number isnt...