The Dispersion Unwind Arrives What Does Dealer Gamma Say Into MegaCap Earnings

The Dispersion Unwind Arrives: What Does Dealer Gamma Say Into MegaCap Earnings

BY TYLER DURDEN MONDAY, JUL 27, 2026 - 08:25 PM Via SpotGamma, The Dispersion Unwind Arrives Last week, we noted in our pre-market Founder's Note that markets were skating on thin ice. In addition to growing macro risks, COR1M had collapsed below 8 signaling extreme dispersion between index and single-stock volatility. After our Risk Pivot level was breached on Thursday, the growing negative gamma environment amplified the resulting price swings. The Mag 7 basket posted its worst session since the April 2025 tariff-driven selloff, and SPX dropped 1.2% — one of the worst days for the index in weeks. In short, the dispersion unwind we have been watching for is no longer hypothetical. While earnings from Tesla (-16%) and Google (-7%) dominated last week’s relatively quiet calendar, this next week brings FOMC (July 29) alongside earnings calls from four other Mag7 stocks. This much denser calendar threatens further volatility ahead. The risk of rising volatility does not appear priced into the SPX Term Structure chart for this next week. At-the-money implied volatility (darker green line) currently trends near the middle of its 90-day range. However, Forward IV (lighter line) is notably higher over the next week, suggesting concentrated event risk ahead.

The heavier event calendar introduces risks to the market — alongside opportunities to capitalize on growing index and single stock volatility. As an example, two single-stock vol trades we discussed on Tastylive performed well over the past week as implied vol jumped. For earnings trades specifically, analyzing both the volatility conditions and dealer gamma exposure can shed light on specific trade opportunities. The Event-Heavy Week Ahead The FOMC policy decision arrives on July 29, followed by PCE inflation data on July 31. With the Fed providing less forward guidance and markets facing greater uncertainty around interest rates, these events each hold the potential to spike volatility. In addition to macro data prints, this next week also brings earnings reports from four Mag 7 names. Microsoft and Meta report on July 29, followed by Apple and Amazon on July 31. This is a substantial amount of event risk compressed into just two trading sessions.

The implied move – the options market's estimate of the expected post-earnings price swing – sits near 7% for META, while MSFT and AMZN have implied moves closer to 6%. AAPL sits clearly lower near 4%. Given how last week's earnings played out, the market is clearly not treating these reports as low-risk events.