Morning. Dealer gamma in the SPX complex got reduced by 499MM to minus 62MM overnight, while the gamma inversion level moved up a notch to 4500 points. Main resistance remains at 4500, support can be identified at 4400.
A main factor in the push higher yesterday and overnight was the strong compression of implied volatility, probably due to today's VIX expiry, as open interest data doesn't show a significant reduction in put positioning.