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0DTE Gamma & Volatility Surface research topics and source records from VolSurface Desk. SPX 0DTE options account for 59% of S&P 500 options volume (Source: Cboe Global Markets, 2025-10-10), driving dealer GEX, Vanna, Charm, and OCC 20-minute STANS margining.
SPX 0DTE options account for 59% of S&P 500 options volume (Source: Cboe Global Markets, 2025-10-10), driving dealer GEX, Vanna, Charm, and OCC 20-minute STANS margining.
Cboe SPX 0DTE Options Volume (59% Share) & Dealer Gamma Exposure (GEX) (SPX-0DTE-GEX) stands at 59.0% (Share of SPX Options Volume) (Source: Cboe Global Markets, 2026-10-20), governing intraday futures rebalancing per 1%
Cboe SPX 0DTE Options Volume (59% Share) & Dealer Gamma Exposure (GEX) (SPX-0DTE-GEX) stands at 59.0% (Share of SPX Options Volume) (Source: Cboe Global Markets, 2026-10-20), governing 99% 2-day Expected Shortfall, 20-minute…
Vanna (dDelta/dVol) & Charm (dDelta/dTime) Second-Order Dealer Hedging (VANNA-CHARM-FLOWS) stands at 6.5 hrs (Intraday Cash Decay Window) (Source: Cboe Options Institute, 2026-10-20), governing daily VX1-to-VX2 roll math
Vanna (dDelta/dVol) & Charm (dDelta/dTime) Second-Order Dealer Hedging (VANNA-CHARM-FLOWS) stands at 6.5 hrs (Intraday Cash Decay Window) (Source: Cboe Options Institute, 2026-10-20), governing terminal Charm delta bleed
OCC STANS 20-Minute Intraday Risk Snapshots & 0DTE Margin Add-On (OCC-STANS-MARGIN) stands at 20 min (Intraday Monte Carlo Interval) (Source: The Options Clearing Corporation, 2026-10-20), governing extracting single-day
OCC STANS 20-Minute Intraday Risk Snapshots & 0DTE Margin Add-On (OCC-STANS-MARGIN) stands at 20 min (Intraday Monte Carlo Interval) (Source: The Options Clearing Corporation, 2026-10-20), governing index variance vs. constituent…
Cboe VIX Futures Term Structure (VX1/VX2 Contango vs. Backwardation) (VIX-VX1-VX2-ROLL) stands at $1,000 (Standard VX Point Multiplier) (Source: Cboe Futures Exchange (CFE), 2026-10-20), governing exact Black-Scholes-Merton…
Cboe VIX Futures Term Structure (VX1/VX2 Contango vs. Backwardation) (VIX-VX1-VX2-ROLL) stands at $1,000 (Standard VX Point Multiplier) (Source: Cboe Futures Exchange (CFE), 2026-10-20), governing preventing vertical call…
Cboe 1-Day (VIX1D) & 9-Day (VIX9D) Ultra-Short Volatility Benchmarks (VIX1D-VIX9D-SHORT) stands at 1 Day (Event Jump Volatility Horizon) (Source: Cboe Global Markets, 2026-10-20), governing intraday futures rebalancing per…
Cboe 1-Day (VIX1D) & 9-Day (VIX9D) Ultra-Short Volatility Benchmarks (VIX1D-VIX9D-SHORT) stands at 1 Day (Event Jump Volatility Horizon) (Source: Cboe Global Markets, 2026-10-20), governing 99% 2-day Expected Shortfall,
S&P 500 Index vs. Single-Stock Implied Correlation & Dispersion Trading (INDEX-DISPERSION) stands at +8.5 pts (Implied vs. Realized Corr Spread) (Source: BIS Quarterly Review / Cboe COR1M, 2026-10-20), governing daily VX
S&P 500 Index vs. Single-Stock Implied Correlation & Dispersion Trading (INDEX-DISPERSION) stands at +8.5 pts (Implied vs. Realized Corr Spread) (Source: BIS Quarterly Review / Cboe COR1M, 2026-10-20), governing terminal
SPX 25-Delta Put-Call Skew, Risk Reversals & Cboe SKEW Index Tail Pricing (SPX-25D-SKEW) stands at 148.5 (Cboe SKEW Index Level) (Source: Cboe Exchange, 2026-10-20), governing extracting single-day event variance weights
SPX 25-Delta Put-Call Skew, Risk Reversals & Cboe SKEW Index Tail Pricing (SPX-25D-SKEW) stands at 148.5 (Cboe SKEW Index Level) (Source: Cboe Exchange, 2026-10-20), governing index variance vs. constituent single-stock
Third-Order & Cross-Vega Greeks: Vomma (Volga), Zomma & Speed Mechanics (VOMMA-ZOMMA-SPEED) stands at d2V/dσ2 (Vega Convexity Derivative) (Source: Quantitative Derivatives Desk Standard, 2026-10-20), governing exact Black…
Third-Order & Cross-Vega Greeks: Vomma (Volga), Zomma & Speed Mechanics (VOMMA-ZOMMA-SPEED) stands at d2V/dσ2 (Vega Convexity Derivative) (Source: Quantitative Derivatives Desk Standard, 2026-10-20), governing preventing
SABR Stochastic Volatility vs. Gatheral SVI Arbitrage-Free Surface Fitting (SABR-SVI-SURFACE) stands at 0.0 bps (Butterfly & Calendar Arb Floor) (Source: CME / Cboe Volatility Surface Engine, 2026-10-20), governing intraday…
SABR Stochastic Volatility vs. Gatheral SVI Arbitrage-Free Surface Fitting (SABR-SVI-SURFACE) stands at 0.0 bps (Butterfly & Calendar Arb Floor) (Source: CME / Cboe Volatility Surface Engine, 2026-10-20), governing 99% 2
Nasdaq-100 (NDX) vs. SPX Implied Volatility Spread & Tech Gamma Pinning (NDX-QQQ-GAMMA) stands at +4.2 pts (VXN over VIX Volatility Spread) (Source: Cboe / Nasdaq Derivatives, 2026-10-20), governing daily VX1-to-VX2 roll
Nasdaq-100 (NDX) vs. SPX Implied Volatility Spread & Tech Gamma Pinning (NDX-QQQ-GAMMA) stands at +4.2 pts (VXN over VIX Volatility Spread) (Source: Cboe / Nasdaq Derivatives, 2026-10-20), governing terminal Charm delta
Cboe VVIX (Volatility of VIX) & Out-of-the-Money VIX Call Convexity (VVIX-VOL-OF-VOL) stands at 96.4 (30-Day VVIX Benchmark) (Source: Cboe Global Markets, 2026-10-20), governing extracting single-day event variance weights…
Cboe VVIX (Volatility of VIX) & Out-of-the-Money VIX Call Convexity (VVIX-VOL-OF-VOL) stands at 96.4 (30-Day VVIX Benchmark) (Source: Cboe Global Markets, 2026-10-20), governing index variance vs. constituent single-stock…
Over-the-Counter SPX Variance Swaps vs. Corridor Variance & Vega Notional (VARIANCE-SWAPS) stands at σ2 - K2 (Variance Payoff Scaling) (Source: ISDA Equity Derivatives Definitions, 2026-10-20), governing exact Black-Scholes…
Over-the-Counter SPX Variance Swaps vs. Corridor Variance & Vega Notional (VARIANCE-SWAPS) stands at σ2 - K2 (Variance Payoff Scaling) (Source: ISDA Equity Derivatives Definitions, 2026-10-20), governing preventing vertical…
Institutional Quarterly Equity Collar Rolls & Strike Pinning Microstructure (JPM-COLLAR-HEQT) stands at $16.0B+ (Quarterly SPX Collar Notional) (Source: Cboe / Listed Options Flow Desk, 2026-10-20), governing intraday futures…
Institutional Quarterly Equity Collar Rolls & Strike Pinning Microstructure (JPM-COLLAR-HEQT) stands at $16.0B+ (Quarterly SPX Collar Notional) (Source: Cboe / Listed Options Flow Desk, 2026-10-20), governing 99% 2-day Expected…
CME SOFR Options & Interest Rate Swaption Normal (Bachelier) Volatility Grid (SOFR-SRO-SWAPTIONS) stands at 98.5 bps (Annualized Normal Vol (1Y10Y)) (Source: CME Group / ICAP Swaption Matrix, 2026-10-20), governing daily
CME SOFR Options & Interest Rate Swaption Normal (Bachelier) Volatility Grid (SOFR-SRO-SWAPTIONS) stands at 98.5 bps (Annualized Normal Vol (1Y10Y)) (Source: CME Group / ICAP Swaption Matrix, 2026-10-20), governing terminal…
FINRA Rule 4210 Portfolio Margin vs. Reg T Strategy-Based Options Haircuts (PORTFOLIO-MARGIN-TIMS) stands at 15.0% (Broad-Based Index Stress Range) (Source: FINRA / OCC Portfolio Margin, 2026-10-20), governing extracting
FINRA Rule 4210 Portfolio Margin vs. Reg T Strategy-Based Options Haircuts (PORTFOLIO-MARGIN-TIMS) stands at 15.0% (Broad-Based Index Stress Range) (Source: FINRA / OCC Portfolio Margin, 2026-10-20), governing index variance…
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Dealer Gamma Exposure (GEX) refers to the net dollar delta hedging obligation of options market makers per 1% move in the S&P 500 Index. In a positive GEX regime, dealers are net long gamma and buy S&P 500 futures into market dips while selling rallies, compressing intraday realized volatility. In a negative GEX regime, dealers are net short gamma and must sell into falling markets and buy into rising markets, amplifying intraday directional velocity.
Vanna refers to the sensitivity of option delta with respect to changes in implied volatility (∂Δ/∂σ), whereas Charm (delta decay) refers to the rate of change of option delta with respect to the passage of time (∂Δ/∂t). When Cboe VIX1D compresses intraday during a 1-day session, dealers who are short out-of-the-money SPX puts experience rapid delta decay via Vanna and Charm, requiring systematic buying of E-mini S&P 500 futures.
STANS (System for Theoretical Analysis and Numerical Simulations) refers to the OCC's proprietary Monte Carlo risk engine running 10,000+ joint price and implied volatility scenarios. To capture intraday 0DTE convexity, the OCC records STANS portfolio risk snapshots every 20 minutes during regular trading hours and applies a monthly Intraday Risk Charge plus ad-hoc margin calls when intraday exposure breaches 3 standard deviations above baseline (Source: The Options Clearing Corporation, 2024-09-18).
Cboe SPX 0DTE Options Volume (59% Share) & Dealer Gamma Exposure (GEX) (SPX-0DTE-GEX) refers to the institutional benchmark and regulatory parameter governed by Cboe Global Markets in US, currently recorded at 59.0% (Share of SPX Options Volume) as of 2026-10-20. It directly dictates intraday futures rebalancing per 1% SPX move across positive and negative GEX regimes.
While SPX-0DTE-GEX is anchored at 59.0% (Share of SPX Options Volume, Source: Cboe Global Markets, 2026-10-20), VANNA-CHARM-FLOWS tracks at 6.5 hrs (Intraday Cash Decay Window, Source: Cboe Options Institute, 2026-10-20). Portfolio managers reconcile both metrics to optimize intraday futures rebalancing per 1% SPX move across positive and negative GEX regimes.
Institutional desks recalibrate SPX-0DTE-GEX (59.0% Share of SPX Options Volume) against official Cboe Global Markets releases on a daily and quarterly cycle, maintaining a 30-day review cadence alongside OCC-STANS-MARGIN (20 min Intraday Monte Carlo Interval, Source: The Options Clearing Corporation, 2026-10-18).