Looking at Kora Reddy ‏@Paststat’s post, if we look at only Friday before August’s expiration, and we put on one of Larry William’s favorite filters “Trading day of the month”, and set TDM not equal to 7 (August 9th is 7th trading day of August), then Friday before August’s expiration has 100% chance of winning. So, NOT buying into Friday’s close (August 9th) may be more prudent.OEX_FRI_8_TDMNOT7 FridayBeforeOptionExpirationSummary FridayBeforeOptionExpirationTradeDetails

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