A question every day trader has wondered, answered with 15 years of minute data: does the market's opening move actually hold through the day, or does it reverse? The team defines a large move as a half percent in the first part of the session and tracks where SPX finishes after 30, 60 and 90 minutes, separating large up moves, large down moves and flat sessions. The backdrop is the famous U-shaped intraday volatility curve, most of the action is in the first 90 minutes and the last 30. 📊 tastylive: tastylive.com 📰 Get Tom's pre-market analysis every morning: tastylive.com/newsletters 📘 FREE Options Strategy Guide: tinyurl.com/bp9ms763 📱 Follow tastylive on X: x.com/tastyliveshow Chapters 00:00 Does the opening move hold 00:25 Defining a large move 00:39 The U-shaped volatility curve 01:44 After 30 minutes 03:24 After one hour 05:47 After 90 minutes 06:23 Reversal odds drop to 10% 07:00 Up moves hold better, positive drift 08:00 When the r...