SPY--

spy fridays movement greeks gex nodes ivs intraday behavior

$SPY Friday's movement using playback... Greeks and stuff, but I'm pointing out the differences in GEX nodes and their IVs. I'm tracking both as the day goes on, and it shifts if those nodes change with updates to the IVs heading into close. I'm confused by the intraday behavior. During selloffs, these large nodes of Positive Gamma IVs increase. During rallies, the opposite happens: Put IVs go up and Call IVs drop. And as we know, we closed lower, but Call IVs still climbed even as SPX dropped another 75 points! What's going on? Share your thoughts...
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