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

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FOMC

Mar 22 2026

After OPEX: Market Loses Its Shock Absorber

Stacked bar charts showing March 20, 2026 OPEX delta notional breakdown by asset class, with calls vs puts distribution percentages.

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?

Two charts comparing SPX 1-month realized volatility against VIX implied volatility from 2000-2026, with their spread displayed below.

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

Feb 15 2026

Flat Index Masks Hidden Chaos

SPX put skew chart showing elevated downside hedging with call skew at low levels as of February 13, 2026.

Overall price stability in the S&P 500 is masking one of the most unusual equity environments in recent years. While SPX has been roughly flat over the past month, the average constituent has moved 10.8% — a 99th percentile dispersion reading, as we discussed in our Thursday AM Founder’s Note. All signs point to increasing fragmentation beneath […]

Written by Simon Scholten · Categorized: Market Analysis, SpotGamma Weekly · Tagged: FOMC, iv, OPEX, positive gamma, spotgamma weekly, SPX, VIX, volatility

Feb 08 2026

The Market’s 0DTE Underbelly Is Exposed

SPX options data showing strike prices, net open interest, and gamma exposure throughout trading hours on Feb 4, 2026.

Last week reminded us just how fast market stability can give way to volatility. After trading near all-time highs at 7,000, the S&P 500 fell 3% in just three sessions, closing Thursday at 6,798 amid weakness in software and crypto. Our last Sunday Newsletter focused specifically on how this type of fragility underscores today’s market. This […]

Written by Simon Scholten · Categorized: Market Analysis, SpotGamma Weekly · Tagged: FOMC, iv, OPEX, positive gamma, spotgamma weekly, SPX, VIX, volatility

Feb 01 2026

SPX Touches 7,000 and Cracks — What Makes This Market So Fragile?

Chart showing cumulative dealer gamma (positive) and non-Odte dealer gamma (negative) across strike prices, with bars indicating gamma levels.

Market Fragility in the Face of All-Time Highs As the S&P 500 pushes record highs, the options market continues to flash warning signals beneath the surface. Underlying risk from volatility discrepancies and index-equity correlation suggest an environment prone to vol spasms — similar to what we witnessed with Thursday’s (1/29) sharp selloff and reversal. These […]

Written by Simon Scholten · Categorized: Market Analysis, SpotGamma Weekly · Tagged: FOMC, iv, OPEX, positive gamma, spotgamma weekly, SPX, VIX, volatility

Jan 25 2026

Vanna Fuels Market Rally as Market Fears Subside

Volatility skew chart showing downside vol decreasing from Tuesday to Friday while upside vol spikes, with three comparable trading dates tracked.

Last week began with fear dominating market sentiment: analysts widely attributed Tuesday’s 2% SPX selloff to Greenland worries and tariff threats. As we pointed out in last weekend’s newsletter, traders had begun hedging against downside risk as put skew increased and volatility premiums rose. However, the quick turnaround back to SPX 6,900 seemed to erase any […]

Written by Simon Scholten · Categorized: Market Analysis, SpotGamma Weekly · Tagged: FOMC, iv, OPEX, positive gamma, spotgamma weekly, SPX, VIX, volatility

Jan 18 2026

Defensive Positioning Emerges as Market Rallies

VIX options chart showing total gamma and convexity across strike prices with negative gamma trend.

Traders Turn Defensive In the Face of Market’s Climb SPX tested fresh all-time highs last week, with positive gamma providing guardrails for the broader market. In the face of headline noise—from criminal investigations into Powell to Iran-related escalation—the market absorbed every dip, with the 6,890 Risk Pivot level from Monday’s AM Founder’s Note holding firm. However, increasing put skew and […]

Written by Simon Scholten · Categorized: Market Analysis, SpotGamma Weekly · Tagged: FOMC, iv, OPEX, positive gamma, spotgamma weekly, SPX, VIX, volatility

Dec 14 2025

FOMC Reset: Vol Crushes, Stocks Lift Higher

SPX gamma chart showing strike levels around 6,800-7,000 with total gamma bars and trend lines.

Last week began with quiet anticipation of Wednesday’s FOMC. When the Fed announced the 25 basis point rate cut and Treasury bill purchases, the reaction was immediate. Equities surged, with the SPX breaking out above our 6,845 Volatility Trigger to approach all-time-highs near the 6,900 resistance level. The options market had priced in meaningful event-related volatility surrounding FOMC, and […]

Written by Simon Scholten · Categorized: Market Analysis, SpotGamma Weekly · Tagged: 0DTE, FOMC, forward-vol, iv, negative gamma, OPEX, spotgamma weekly

Nov 25 2025

December Rate Cut? What the Options Market Is Signaling

Line chart of SPX implied volatility term structure with two teal lines and a yellow-circled peak at Fed Press Conference.

Using Options to Evaluate Rate-Sensitive Names With last week bringing realized volatility to the highest levels seen in 6 months, the market has entered a highly reactive state. Market events and data releases each have the potential to change the outlook for direction and volatility—and the December 10 FOMC remains the biggest date on the […]

Written by Simon Scholten · Categorized: Market Analysis · Tagged: Equity Hub, FlowPatrol, FOMC, gamma, IWM, rates

Jun 21 2022

The Oversold Stock Market Could See a Bounce

FOMC minutes meeting rally risk

The following is a guest post courtesy of Michael Kramer of Mott Capital Management.  The S&P 500 has fallen by more than 10% in the past two weeks, and to say that it is due for a bounce may be an understatement. The combination of a 75 bps Fed rate hike and massive June quarterly options expiration resulted […]

Written by SpotGamma · Categorized: Guest Post, Market Analysis · Tagged: Bounce, delta tilt, FOMC, Michael Kramer, Rally, S&P 500

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