August Opex Squeeze: Gamma Flips and the VIX Crush

The August options expiration delivered the expected fireworks as the SPY grappled with the psychological 565-handle. Early morning tape was dominated by a 'gamma flip' scenario, where dealers were forced to chase delta as the index breached yesterday’s high. Volume was concentrated in the first ninety minutes, favoring the long side of the tape as volatility sellers compressed the VIX toward the 14.50 support zone, creating a tailwind for the mega-cap tech cohort.

NVDA remained the primary engine of liquidity, reclaiming the $125 level on heavy institutional bid-side activity. The price action was a masterclass in trend-following until the European close, at which point the tape turned 'choppy' as profit-taking hit the AI semi space. SMCI followed suit, printing a classic 'failed breakout' at the $650 mark, providing a lucrative short-scalp opportunity for those watching the tape for signs of exhausted buying pressure.

As we head into the weekend, the focus shifts to the sustainability of this rally. While the indices finished near session highs, the narrowing breadth in the final hour suggests that the 'Opex squeeze' may have pulled forward next week's demand. Momentum traders should be watching for a gap-fill scenario on Monday, as the heavy call positioning that fueled today's move will likely be neutralized by the opening bell.

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