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S&P 500 Stock Market Gamma Trading Levels Based on Options Open Interest

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negative gamma

Aug 27 2026

Jackson Hole 2026: What the Options Market Expects

SPY forward IV prices Jackson Hole as a non-event, but CTAs are stretched short Treasuries and SPX gamma flips near 7780 — an asymmetric setup into Friday.

Written by SpotGamma · Categorized: Market Analysis · Tagged: bonds, FOMC, gamma, GLD, GOLD, interest rates, negative gamma, OPEX, SPX, TLT, volatility

Jun 21 2026

Vol Sellers Shrug off a Hawkish Fed

Despite a hawkish Fed rattling equities midweek, the market easily and quickly retraced any lost ground by Thursday. With June OPEX now behind us and implied volatility reset toward recent lows, there is a soft feeling of “what’s next?” for the S&P 500 until earnings season ramps up next month. The June FOMC meeting on […]

Written by Sherry An · Categorized: Market Analysis, SpotGamma Weekly · Tagged: dealer hedging, FOMC, Gamma Exposure, hawkish Fed, implied volatility, JPM Collar roll, Kevin Warsh Fed, market makers, Micron earnings implied move, negative gamma, OPEX, SPCX options, spotgamma weekly, SPX term structure

Jun 14 2026

Triple Witching + FOMC Fuels Volatility Risk

The market delivered several volatile sessions last week as traders navigated Wednesday’s CPI inflation report, Friday’s massive SpaceX IPO (SPCX), and a mix of Iran-driven headlines throughout. Last Sunday, we wrote about how extreme options positioning into major catalysts could spark the exact volatile market behavior observed over the past several days. Tuesday’s wild 200-point […]

Written by Sherry An · Categorized: Market Analysis, SpotGamma Weekly · Tagged: dealer hedging, FOMC, Gamma Exposure, gold GLD outlook, implied volatility, Kevin Warsh Fed, market makers, negative gamma, OPEX, spotgamma weekly, SPX term structure, triple witching

Apr 12 2026

Vol Crush Lifts the S&P 500 — Will the Rally Last?

Following last week’s ceasefire announcement, the S&P 500 lifted 3% from roughly 6,550 to 6,800. On the surface, this rally looked like a meaningful shift toward risk-on sentiment as implied volatility collapsed rapidly across all expirations. Similarly, VIX plummeted below 20 for the first time in four weeks, marking one of its largest single-day declines ever. Yet […]

Written by Simon Scholten · Categorized: Market Analysis, SpotGamma Weekly · Tagged: dealer gamma, dealer positioning, geopolitical risk, implied vol, iv, negative gamma, OPEX, spotgamma weekly, SPX, vanna, vol crush, volatility

Apr 05 2026

How One Key Level Drove Last Week’s Rally

The S&P 500 bounced back 2% last week after scraping against 6-month lows. Mixed headlines on the Iran conflict explained much of this tug-of-war, yet markets are still holding their breath. For many traders, the rally felt counterintuitive: How can equities rally so furiously if geopolitical uncertainties remain unresolved? When looking at Tuesday’s major bounce in […]

Written by Simon Scholten · Categorized: Market Analysis, SpotGamma Weekly · Tagged: dealer gamma, dealer positioning, FOMC, geopolitical risk, implied vol, iv, JPM Collar, negative gamma, OPEX, put skew, realized vol, spotgamma weekly, SPX, trace, volatility

Mar 29 2026

The New Volatility Regime

Over the past several weeks, we have consistently highlighted the market’s growing fragility. From the negative gamma “trapdoor” to the destabilizing impact of geopolitical shocks, the message has been clear: this is no longer a range-bound market. Last week confirmed those warnings, as the S&P 500 is down nearly 9% from all-time highs. On Thursday and Friday, traders […]

Written by Simon Scholten · Categorized: Market Analysis, SpotGamma Weekly · Tagged: dealer gamma, dealer positioning, geopolitical risk, implied vol, iv, negative gamma, realized vol, spotgamma weekly, SPX, Synthetic OI, VIX, volatility

Mar 22 2026

After OPEX: Market Loses Its Shock Absorber

The options market has just cleared one of the largest structural events of the quarter, as Friday’s OPEX saw nearly $1.4 trillion in delta notional expire for the S&P 500. Because significant positions have now rolled off from the March expiration, the market has lost an important stabilizing force just as macro pressures begin to build. […]

Written by Simon Scholten · Categorized: Market Analysis, SpotGamma Weekly · Tagged: dealer gamma, dealer positioning, FOMC, geopolitical risk, implied vol, iv, negative gamma, OPEX, put skew, realized vol, spotgamma weekly, SPX, trace, VIX, volatility, Volatility Skew

Mar 15 2026

March OPEX: Tipping Point or Turning Point?

Fragility, Risk, and Potential Vol Reset As the S&P 500 enters OPEX week, we echo the same theme of the past few weeks: this market remains fragile. Last week’s selloff pushed the index below the three-month trading range of SPX 6,800-7,000 that had held since late 2025, subsequently closing down 5% since mid-January. The conflict with Iran continues […]

Written by Simon Scholten · Categorized: Market Analysis, SpotGamma Weekly · Tagged: dealer gamma, dealer positioning, FOMC, geopolitical risk, implied vol, iv, negative gamma, put skew, realized vol, spotgamma weekly, SPX, trace, VIX, volatility, Volatility Skew

Mar 08 2026

Geopolitical Risk Hits a Fragile Market

Markets entered last week on fragile footing. In our previous Sunday note, we emphasized how negative dealer gamma, extreme put skew, and heavy 0DTE options activity set the market up for a trapdoor scenario. This created a market structure vulnerable to sharp drops and spikes in volatility, as we saw play out last week. The dramatic […]

Written by Simon Scholten · Categorized: Market Analysis, SpotGamma Weekly · Tagged: Compass, dealer gamma, dealer positioning, forward implied volatility, forward-vol, geopolitical risk, iv, negative gamma, put skew, risk management, spotgamma weekly, SPX, Synthetic OI, trace, volatility, Volatility Skew

Mar 01 2026

The Options Market Trapdoor

Over the past week, the topic of volatility has returned to the forefront. While the market has been largely range-bound, underlying support remains tenuous. Simultaneously, traders have begun more actively paying for downside protection. Given the backdrop of flaring geopolitical conflict, we see assymetric downside risk forming as trader uncertainty and negative gamma threaten to unlock the […]

Written by Simon Scholten · Categorized: Market Analysis, SpotGamma Weekly · Tagged: call skew, Compass, dealer gamma, dealer positioning, iv, negative gamma, positive gamma, put skew, spotgamma weekly, SPX, Synthetic OI, volatility, Volatility Skew

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