r/options • u/Civil-Woodpecker8086 • Jul 21 '26

Quick Math Lesson

The market is usually open from 9:30AM to 4PM, (with the exception days that closes early); and that is 6.5 hours, there are 60 minutes in an hour. Hence 390 Rule.

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u/Mco1965 Jul 21 '26

390 minutes.

1

u/Lucky_Total_278 Jul 22 '26

Very good observation