# VolSurface Desk

> VolSurface Desk delivers interactive Black-Scholes-Merton calculators, delta/gamma hedging estimators, futures basis calculators, and tail-risk VaR stress tools.

- Canonical Domain: https://volsurfacedesk.com
- Organization: VolSurface Desk (VolSurface Quantitative Systems LLC)
- Full Corpus Digest: https://volsurfacedesk.com/llms-full.txt
- Open CSV/JSON Datasets Hub: https://volsurfacedesk.com/datasets

## VIX Term Structure & Skew

- [FINRA Rule 4210 Portfolio Margin vs. Reg T Strategy-Based Options Haircuts: 3:50 PM ET Market-on-Close (MOC) Imbalance & 4:00 PM Cash Settlement (15.0% Broad-Based Index Stress Range Benchmark)](https://volsurfacedesk.com/desk-notes/portfolio-margin-tims-350pm-moc-imbalance-and-cash-close-pinning): 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 terminal C
- [FINRA Rule 4210 Portfolio Margin vs. Reg T Strategy-Based Options Haircuts: Constant-Maturity Contango Roll Drag & Backwardation Flip Triggers (15.0% Broad-Based Index Stress Range Benchmark)](https://volsurfacedesk.com/desk-notes/portfolio-margin-tims-contango-roll-drag-and-term-structure-carry): 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 daily VX1-
- [CME SOFR Options & Interest Rate Swaption Normal (Bachelier) Volatility Grid: Clearinghouse Margin Monte Carlo Scenarios & Intraday Call Triggers (98.5 bps Annualized Normal Vol (1Y10Y) Benchmark)](https://volsurfacedesk.com/desk-notes/sofr-sro-swaptions-clearing-margin-monte-carlo-stress-scenarios): 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 99% 2
- [Institutional Quarterly Equity Collar Rolls & Strike Pinning Microstructure: 25-Delta Strike Skew, Put Wing Convexity & No-Arbitrage Bounds ($16.0B+ Quarterly SPX Collar Notional Benchmark)](https://volsurfacedesk.com/desk-notes/jpm-collar-heqt-strike-skew-convexity-and-butterfly-arbitrage): 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 preventing
- [Institutional Quarterly Equity Collar Rolls & Strike Pinning Microstructure: Partial Derivative Formulas, Scaling Units & Tenor Surface Grid ($16.0B+ Quarterly SPX Collar Notional Benchmark)](https://volsurfacedesk.com/desk-notes/jpm-collar-heqt-partial-derivative-formulas-and-surface-grid): 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 exact Black
- [Over-the-Counter SPX Variance Swaps vs. Corridor Variance & Vega Notional: Correlation Spike Stress Audit & Institutional Dispersion Unwinds (σ2 - K2 Variance Payoff Scaling Benchmark)](https://volsurfacedesk.com/desk-notes/variance-swaps-dispersion-correlation-unwind-stress-audit): 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 index variance v
- [Over-the-Counter SPX Variance Swaps vs. Corridor Variance & Vega Notional: FOMC & CPI Event Volatility Crush & Forward Variance Decomposition (σ2 - K2 Variance Payoff Scaling Benchmark)](https://volsurfacedesk.com/desk-notes/variance-swaps-fomc-and-cpi-event-volatility-crush-math): 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 extracting singl
- [Cboe VVIX (Volatility of VIX) & Out-of-the-Money VIX Call Convexity: 3:50 PM ET Market-on-Close (MOC) Imbalance & 4:00 PM Cash Settlement (96.4 30-Day VVIX Benchmark Benchmark)](https://volsurfacedesk.com/desk-notes/vvix-vol-of-vol-350pm-moc-imbalance-and-cash-close-pinning): 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 terminal Charm delta bleed and PM-settled

## 0DTE Gamma & Volatility Surface

- [FINRA Rule 4210 Portfolio Margin vs. Reg T Strategy-Based Options Haircuts: Correlation Spike Stress Audit & Institutional Dispersion Unwinds (15.0% Broad-Based Index Stress Range Benchmark)](https://volsurfacedesk.com/desk-notes/portfolio-margin-tims-dispersion-correlation-unwind-stress-audit): 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 vari
- [FINRA Rule 4210 Portfolio Margin vs. Reg T Strategy-Based Options Haircuts: FOMC & CPI Event Volatility Crush & Forward Variance Decomposition (15.0% Broad-Based Index Stress Range Benchmark)](https://volsurfacedesk.com/desk-notes/portfolio-margin-tims-fomc-and-cpi-event-volatility-crush-math): 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
- [CME SOFR Options & Interest Rate Swaption Normal (Bachelier) Volatility Grid: 3:50 PM ET Market-on-Close (MOC) Imbalance & 4:00 PM Cash Settlement (98.5 bps Annualized Normal Vol (1Y10Y) Benchmark)](https://volsurfacedesk.com/desk-notes/sofr-sro-swaptions-350pm-moc-imbalance-and-cash-close-pinning): 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 termi
- [CME SOFR Options & Interest Rate Swaption Normal (Bachelier) Volatility Grid: Constant-Maturity Contango Roll Drag & Backwardation Flip Triggers (98.5 bps Annualized Normal Vol (1Y10Y) Benchmark)](https://volsurfacedesk.com/desk-notes/sofr-sro-swaptions-contango-roll-drag-and-term-structure-carry): 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
- [Institutional Quarterly Equity Collar Rolls & Strike Pinning Microstructure: Clearinghouse Margin Monte Carlo Scenarios & Intraday Call Triggers ($16.0B+ Quarterly SPX Collar Notional Benchmark)](https://volsurfacedesk.com/desk-notes/jpm-collar-heqt-clearing-margin-monte-carlo-stress-scenarios): 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 E
- [Over-the-Counter SPX Variance Swaps vs. Corridor Variance & Vega Notional: 25-Delta Strike Skew, Put Wing Convexity & No-Arbitrage Bounds (σ2 - K2 Variance Payoff Scaling Benchmark)](https://volsurfacedesk.com/desk-notes/variance-swaps-strike-skew-convexity-and-butterfly-arbitrage): 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 verti
- [Over-the-Counter SPX Variance Swaps vs. Corridor Variance & Vega Notional: Partial Derivative Formulas, Scaling Units & Tenor Surface Grid (σ2 - K2 Variance Payoff Scaling Benchmark)](https://volsurfacedesk.com/desk-notes/variance-swaps-partial-derivative-formulas-and-surface-grid): 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-Scho
- [Cboe VVIX (Volatility of VIX) & Out-of-the-Money VIX Call Convexity: Correlation Spike Stress Audit & Institutional Dispersion Unwinds (96.4 30-Day VVIX Benchmark Benchmark)](https://volsurfacedesk.com/desk-notes/vvix-vol-of-vol-dispersion-correlation-unwind-stress-audit): 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-stoc

## Second-Order Greeks & Hedging

- [FINRA Rule 4210 Portfolio Margin vs. Reg T Strategy-Based Options Haircuts: Clearinghouse Margin Monte Carlo Scenarios & Intraday Call Triggers (15.0% Broad-Based Index Stress Range Benchmark)](https://volsurfacedesk.com/desk-notes/portfolio-margin-tims-clearing-margin-monte-carlo-stress-scenarios): 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 99% 2-day
- [CME SOFR Options & Interest Rate Swaption Normal (Bachelier) Volatility Grid: 25-Delta Strike Skew, Put Wing Convexity & No-Arbitrage Bounds (98.5 bps Annualized Normal Vol (1Y10Y) Benchmark)](https://volsurfacedesk.com/desk-notes/sofr-sro-swaptions-strike-skew-convexity-and-butterfly-arbitrage): 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 preve
- [CME SOFR Options & Interest Rate Swaption Normal (Bachelier) Volatility Grid: Partial Derivative Formulas, Scaling Units & Tenor Surface Grid (98.5 bps Annualized Normal Vol (1Y10Y) Benchmark)](https://volsurfacedesk.com/desk-notes/sofr-sro-swaptions-partial-derivative-formulas-and-surface-grid): 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 exact
- [Institutional Quarterly Equity Collar Rolls & Strike Pinning Microstructure: Correlation Spike Stress Audit & Institutional Dispersion Unwinds ($16.0B+ Quarterly SPX Collar Notional Benchmark)](https://volsurfacedesk.com/desk-notes/jpm-collar-heqt-dispersion-correlation-unwind-stress-audit): 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 index varia
- [Institutional Quarterly Equity Collar Rolls & Strike Pinning Microstructure: FOMC & CPI Event Volatility Crush & Forward Variance Decomposition ($16.0B+ Quarterly SPX Collar Notional Benchmark)](https://volsurfacedesk.com/desk-notes/jpm-collar-heqt-fomc-and-cpi-event-volatility-crush-math): 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 extracting
- [Over-the-Counter SPX Variance Swaps vs. Corridor Variance & Vega Notional: 3:50 PM ET Market-on-Close (MOC) Imbalance & 4:00 PM Cash Settlement (σ2 - K2 Variance Payoff Scaling Benchmark)](https://volsurfacedesk.com/desk-notes/variance-swaps-350pm-moc-imbalance-and-cash-close-pinning): 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 terminal Charm d
- [Over-the-Counter SPX Variance Swaps vs. Corridor Variance & Vega Notional: Constant-Maturity Contango Roll Drag & Backwardation Flip Triggers (σ2 - K2 Variance Payoff Scaling Benchmark)](https://volsurfacedesk.com/desk-notes/variance-swaps-contango-roll-drag-and-term-structure-carry): 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 daily VX1-to-VX2
- [Cboe VVIX (Volatility of VIX) & Out-of-the-Money VIX Call Convexity: Clearinghouse Margin Monte Carlo Scenarios & Intraday Call Triggers (96.4 30-Day VVIX Benchmark Benchmark)](https://volsurfacedesk.com/desk-notes/vvix-vol-of-vol-clearing-margin-monte-carlo-stress-scenarios): 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 99% 2-day Expected Shortfall, 20-minute ri

## OCC Margin & Dispersion Desk

- [CME SOFR Options & Interest Rate Swaption Normal (Bachelier) Volatility Grid: Correlation Spike Stress Audit & Institutional Dispersion Unwinds (98.5 bps Annualized Normal Vol (1Y10Y) Benchmark)](https://volsurfacedesk.com/desk-notes/sofr-sro-swaptions-dispersion-correlation-unwind-stress-audit): 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 index
- [CME SOFR Options & Interest Rate Swaption Normal (Bachelier) Volatility Grid: FOMC & CPI Event Volatility Crush & Forward Variance Decomposition (98.5 bps Annualized Normal Vol (1Y10Y) Benchmark)](https://volsurfacedesk.com/desk-notes/sofr-sro-swaptions-fomc-and-cpi-event-volatility-crush-math): 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 extra
- [Institutional Quarterly Equity Collar Rolls & Strike Pinning Microstructure: 3:50 PM ET Market-on-Close (MOC) Imbalance & 4:00 PM Cash Settlement ($16.0B+ Quarterly SPX Collar Notional Benchmark)](https://volsurfacedesk.com/desk-notes/jpm-collar-heqt-350pm-moc-imbalance-and-cash-close-pinning): 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 terminal Ch
- [Institutional Quarterly Equity Collar Rolls & Strike Pinning Microstructure: Constant-Maturity Contango Roll Drag & Backwardation Flip Triggers ($16.0B+ Quarterly SPX Collar Notional Benchmark)](https://volsurfacedesk.com/desk-notes/jpm-collar-heqt-contango-roll-drag-and-term-structure-carry): 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 daily VX1-t
- [Over-the-Counter SPX Variance Swaps vs. Corridor Variance & Vega Notional: Clearinghouse Margin Monte Carlo Scenarios & Intraday Call Triggers (σ2 - K2 Variance Payoff Scaling Benchmark)](https://volsurfacedesk.com/desk-notes/variance-swaps-clearing-margin-monte-carlo-stress-scenarios): 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 99% 2-day Expect
- [Cboe VVIX (Volatility of VIX) & Out-of-the-Money VIX Call Convexity: 25-Delta Strike Skew, Put Wing Convexity & No-Arbitrage Bounds (96.4 30-Day VVIX Benchmark Benchmark)](https://volsurfacedesk.com/desk-notes/vvix-vol-of-vol-strike-skew-convexity-and-butterfly-arbitrage): 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 preventing vertical call-spread and horizo

## Publication Scope & Editorial Policy

- [About & Editorial Policy](https://volsurfacedesk.com/about): Publishing scope, automated content checks, source records, and corrections policy.
- [Research Topics & Thematic Pillar Hubs](https://volsurfacedesk.com/topics): 12 topic hubs built from 134 pages passing current public indexability checks.
- [Regulated Financial Institutions & Brokers Directory](https://volsurfacedesk.com/counterparties): 182 supervised institutions and 119 regulatory licences (Futures, options and derivatives providers).
- [Global Financial Regulators Directory](https://volsurfacedesk.com/regulators): 48 regulator records and licensing frameworks (Futures, options and derivatives providers).
- [Financial Entity Registry](https://volsurfacedesk.com/instruments): 32 entity profiles linked to pages passing current public indexability checks.
- [Interactive Quantitative Calculators & Financial Tools](https://volsurfacedesk.com/calculators): 5 institutional calculators with closed-form formulas and methodology notes.
- [XML Sitemap Index](https://volsurfacedesk.com/sitemap.xml): Complete machine-readable URL index.
- [Google News Sitemap](https://volsurfacedesk.com/sitemaps/news.xml): Real-time publication feed for news indexers.
- [RSS 2.0 Institutional Research Feed](https://volsurfacedesk.com/feed.xml): Syndicated research briefings.
- [Markdown page catalog](https://volsurfacedesk.com/api/md/catalog): 427 sitemap-listed public pages with Markdown alternatives.
- [6D Rating Methodology](https://volsurfacedesk.com/methodology): Quantitative compliance, investor compensation & execution scoring rules.
- [MCP Verification Server](https://volsurfacedesk.com/api/mcp): Streamable HTTP Model Context Protocol server (descriptor: https://volsurfacedesk.com/.well-known/mcp.json).
- [OpenAPI 3.1 Verification Spec](https://volsurfacedesk.com/.well-known/openapi.json): Deterministic licence (/api/v1/verify/license) & clone-domain (/api/v1/verify/domain) verification APIs.

## Topic Pillar Hubs (`/topics`)

- [0DTE Gamma & Volatility Surface Research Hub](https://volsurfacedesk.com/topics/0dte-gamma-and-volatility-surface): 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. (31 articles, 31 entities)
- [VIX Term Structure & Skew Research Hub](https://volsurfacedesk.com/topics/vix-term-structure-and-skew): VIX Term Structure & Skew research topics and source records from VolSurface Desk. 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 exact Black-Scholes-Merton analytic (31 articles, 31 entities)
- [Second-Order Greeks & Hedging Research Hub](https://volsurfacedesk.com/topics/second-order-greeks-and-hedging): Second-Order Greeks & Hedging research topics and source records from VolSurface Desk. 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 extracting single-day event varianc (30 articles, 30 entities)
- [OCC Margin & Dispersion Desk Research Hub](https://volsurfacedesk.com/topics/occ-margin-and-dispersion-desk): OCC Margin & Dispersion Desk research topics and source records from VolSurface Desk. 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 daily VX1-to-VX2 roll math ($1,000/ (28 articles, 28 entities)
- [market-insights Research Hub](https://volsurfacedesk.com/topics/market-insights): market-insights research topics and source records from VolSurface Desk. A Popular New Bet Hailing From Cryptoland Sets Off a Wall Street Turf War: A group backed by Citadel Securities and Cboe is suing over the approval of single-stock perps. ## Supervisory Register Cross-Reference & Licensing Co (4 articles, 0 entities)
- [volatility-and-options Research Hub](https://volsurfacedesk.com/topics/volatility-and-options): volatility-and-options research topics and source records from VolSurface Desk. Derivatives desk note examining the sharp inversion of the BTC and ETH term structure and 25-delta risk reversals as traders hedged tail risk during the $6.3 billion Binance exploit. (4 articles, 1 entities)
- [regulatory-benchmarks Research Hub](https://volsurfacedesk.com/topics/regulatory-benchmarks): regulatory-benchmarks research topics and source records from VolSurface Desk. Comprehensive 2026 empirical benchmark covering 72 institutions and 48 competent authorities tracked by VolSurface Desk, detailing 6D compliance scores, contracting legal entities, and direct register verification. (1 articles, 0 entities)
- [compliance-forensics Research Hub](https://volsurfacedesk.com/topics/compliance-forensics): compliance-forensics research topics and source records from VolSurface Desk. Practical 2026 due-diligence playbook from VolSurface Desk explaining how to authenticate licence numbers across 48 official registers and detect clone-firm domain spoofing before funding an account. (1 articles, 0 entities)
- [solvency-and-protection Research Hub](https://volsurfacedesk.com/topics/solvency-and-protection): solvency-and-protection research topics and source records from VolSurface Desk. Institutional comparison of statutory investor compensation schemes, daily client-asset segregation rules, and multi-dimensional counterparty risk scores across VolSurface Desk's 2026 coverage universe. (1 articles, 0 entities)
- [Options Greeks, Volatility Surfaces & Quantitative Dispersion Research Hub](https://volsurfacedesk.com/topics/options-greeks-volatility-surfaces-and-quantitative-dispersion): Options Greeks, Volatility Surfaces & Quantitative Dispersion research topics and source records from VolSurface Desk. An institutional quantitative post-mortem of the late October 2026 volatility surface dislocation: how a -1.2% SPX / -2.6% NDX drawdown triggered an extraordinary 20x VIX-to-SPX convexity squeeze, propelled VIX1D above 23.4, breached 0DTE put walls into dealer negative gamma, and forced systematic single-stock dispersion unwinds. (1 articles, 0 entities)
- [Volatility Surface & Derivatives Desk Research Hub](https://volsurfacedesk.com/topics/volatility-surface-and-derivatives-desk): Volatility Surface & Derivatives Desk research topics and source records from VolSurface Desk. An institutional derivatives desk note detailing Gatheral SVI and SSVI static arbitrage constraints (butterfly and calendar conditions), SPX 0DTE dealer gamma/vanna/charm hedging flows, VIX vs VIX1D variance swap replication, and OCC STANS / Eurex Prisma portfolio margining. (1 articles, 0 entities)
- [Volatility Surface & Dealer Flow Mechanics Research Hub](https://volsurfacedesk.com/topics/volatility-surface-and-dealer-flow-mechanics): Volatility Surface & Dealer Flow Mechanics research topics and source records from VolSurface Desk. Vanna and Charm hedging flows refer to the systematic delta-rebalancing trades executed by institutional options market makers in response to shifts in implied volatility (∂Δ/∂σ) and the passage of time (∂Δ/∂t). Across the S&P 500 (SPX) options complex—where average daily volume reached 3.34 million contracts [3.34 million contracts/day, Cboe Global Markets Market Statistics, Q3 2026]—dealer net short downside put positioning and 0DTE gamma concentration drive up to $42.8 billion in deterministic end-of-day futures rebalancing per 1% underlying move [$42.8 billion notional delta flow, Options Clearing Corporation (OCC) Cleared Contract Report, September 2026]. (1 articles, 0 entities)

## Interactive Quantitative Tools (`/tools`)

- [Black–Scholes option calculator](https://volsurfacedesk.com/calculators/black-scholes-calculator): European option price and Greeks (delta, gamma, vega, theta, rho) with dividend yield. Formula: d₁ = [ln(S ÷ K) + (r − q + σ² ÷ 2) T] ÷ (σ √T),  d₂ = d₁ − σ √T ; Call = S e^(−qT) N(d₁) − K e^(−rT) N(d₂) ; Put = K e^(−rT) N(−d₂) − S e^(−qT) N(−d₁)
- [Implied volatility calculator](https://volsurfacedesk.com/calculators/implied-volatility-calculator): Back out the volatility implied by an option’s market price. Formula: Find σ such that BlackScholes(S, K, T, r, q, σ) = market price
- [Futures fair value & basis calculator](https://volsurfacedesk.com/calculators/futures-fair-value-calculator): Cost-of-carry fair value, basis and the repo rate implied by a futures price. Formula: Fair value = S × e^((r − q + c) × T) ; Implied repo = ln(F ÷ S) ÷ T + q − c
- [0DTE implied volatility expected move calculator](https://volsurfacedesk.com/calculators/0dte-expected-move-calculator): Intraday 1σ and 2σ expected price bands from annualised IV and trading minutes remaining. Formula: T_intraday = Minutes remaining ÷ (252 × 390) ; Expected move (1σ) = Spot × σ_annual × √T_intraday ; 1σ range = Spot ± Expected move
- [Black–Scholes option Greeks & gamma exposure (GEX) estimator](https://volsurfacedesk.com/calculators/option-greeks-gex-calculator): Call and put Greeks plus dealer net Gamma Exposure ($ per 1% spot move) from open interest. Formula: Gamma = e^(−qT) φ(d₁) ÷ (S × σ × √T) ; Call GEX ($ per 1% move) = +Gamma × OI_call × Multiplier × S² × 0.01 ; Put GEX ($ per 1% move) = −Gamma × OI_put × Multiplier × S² × 0.01

## Featured Regulated Institutions (`/brokers`)

- [OANDA](https://volsurfacedesk.com/counterparties/oanda): Regulated institution profile (6 tracked licences; services: FX, indices, precious metals, commodities, bonds and related services).
- [Saxo](https://volsurfacedesk.com/counterparties/saxo): Regulated institution profile (8 tracked licences; services: CFDs, Forex, Stocks, Futures, Options).
- [Straits Financial Group](https://volsurfacedesk.com/counterparties/straits-financial-group): Regulated institution profile (3 tracked licences; services: Stock products, futures, energy or precious metals, commodities).
- [StoneX One](https://volsurfacedesk.com/counterparties/stonex-one): Regulated institution profile (5 tracked licences; services: Indices, Forex, Commodities).
- [AvaTrade](https://volsurfacedesk.com/counterparties/avatrade): Regulated institution profile (8 tracked licences; services: FX, commodities, stocks, stock indices, bonds).
- [Inter Pan](https://volsurfacedesk.com/counterparties/inter-pan): Regulated institution profile (2 tracked licences; services: FX, indices, commodities, multiple side).
- [MagnetFX](https://volsurfacedesk.com/counterparties/magnetfx): Regulated institution profile (2 tracked licences; services: Foreign exchange, gold, silver, crude oil, US index).
- [PLOTIO](https://volsurfacedesk.com/counterparties/plotio): Regulated institution profile (3 tracked licences; services: Spot and CFDs commodities such as gold, silver, currency CFDs, crude oil futures, natural gas futures and indices).
- [ARGUS](https://volsurfacedesk.com/counterparties/argus): Regulated institution profile (1 tracked licences; services: CFDs, Forex, Stocks, Futures, Bonds).
- [Bitnomial](https://volsurfacedesk.com/counterparties/bitnomial): Regulated institution profile (1 tracked licences; services: Multi-asset financial services).

## Institutional Encyclopedia Sub-Dossiers & Sovereign Jurisdiction Audits

- Authorized AI Indexers & Answer Engines: `GPTBot`, `OAI-SearchBot`, `PerplexityBot`, `ClaudeBot`, `Google-Extended` (full citation & retrieval access enabled).
- [Broker Regulatory Filings Sub-Dossier](https://volsurfacedesk.com/brokers/[slug]/regulation): Deep-dive licence audit, supervisory status history, and legal entity mapping (`/brokers/[slug]/regulation`).
- [Broker Safety & Client Fund Protection](https://volsurfacedesk.com/brokers/[slug]/safety): Segregation of client accounts, negative balance protection, and statutory compensation tiers (`/brokers/[slug]/safety`).
- [Broker Fee & Spread Schedule](https://volsurfacedesk.com/brokers/[slug]/fees): Commission structures, ECN/STP spread benchmarks, overnight financing swaps, and non-trading fee matrices (`/brokers/[slug]/fees`).
- [Broker Execution Platforms & Connectivity](https://volsurfacedesk.com/brokers/[slug]/platforms): Supported trading terminals, FIX API topology, bridge infrastructure, and execution model (`/brokers/[slug]/platforms`).
- [Regulated Institutional Alternatives](https://volsurfacedesk.com/brokers/[slug]/alternatives): Side-by-side regulated peer substitutes ranked by supervisory overlap and risk score (`/brokers/[slug]/alternatives`).
- [Broker Tradable Markets & Asset Classes](https://volsurfacedesk.com/brokers/[slug]/markets): Instrument coverage across FX, derivatives, equities, indices, commodities, and digital assets (`/brokers/[slug]/markets`).
- [Sovereign Resident Protection Audits (30 Jurisdictions)](https://volsurfacedesk.com/brokers/[slug]/jurisdiction/[iso]): 30 sovereign resident protection audits per entity evaluating local authorisation, cross-border passporting, and investor recourse (`/brokers/[slug]/jurisdiction/[iso]` across US, GB, EU, AU, SG, HK, JP, CA, CH, AE, DE, FR, ES, IT, NL, SE, NO, DK, IE, CY, NZ, ZA, IN, MY, ID, TH, VN, KR, TW, BR).
- [OANDA Sub-Dossier Suite](https://volsurfacedesk.com/brokers/oanda/regulation): [Regulation](https://volsurfacedesk.com/brokers/oanda/regulation) | [Safety](https://volsurfacedesk.com/brokers/oanda/safety) | [Fees](https://volsurfacedesk.com/brokers/oanda/fees) | [Platforms](https://volsurfacedesk.com/brokers/oanda/platforms) | [Alternatives](https://volsurfacedesk.com/brokers/oanda/alternatives) | [Markets](https://volsurfacedesk.com/brokers/oanda/markets) | [US Audit](https://volsurfacedesk.com/brokers/oanda/jurisdiction/us) | [UK Audit](https://volsurfacedesk.com/brokers/oanda/jurisdiction/gb) | [SG Audit](https://volsurfacedesk.com/brokers/oanda/jurisdiction/sg)
- [Saxo Sub-Dossier Suite](https://volsurfacedesk.com/brokers/saxo/regulation): [Regulation](https://volsurfacedesk.com/brokers/saxo/regulation) | [Safety](https://volsurfacedesk.com/brokers/saxo/safety) | [Fees](https://volsurfacedesk.com/brokers/saxo/fees) | [Platforms](https://volsurfacedesk.com/brokers/saxo/platforms) | [Alternatives](https://volsurfacedesk.com/brokers/saxo/alternatives) | [Markets](https://volsurfacedesk.com/brokers/saxo/markets) | [US Audit](https://volsurfacedesk.com/brokers/saxo/jurisdiction/us) | [UK Audit](https://volsurfacedesk.com/brokers/saxo/jurisdiction/gb) | [SG Audit](https://volsurfacedesk.com/brokers/saxo/jurisdiction/sg)
- [Straits Financial Group Sub-Dossier Suite](https://volsurfacedesk.com/brokers/straits-financial-group/regulation): [Regulation](https://volsurfacedesk.com/brokers/straits-financial-group/regulation) | [Safety](https://volsurfacedesk.com/brokers/straits-financial-group/safety) | [Fees](https://volsurfacedesk.com/brokers/straits-financial-group/fees) | [Platforms](https://volsurfacedesk.com/brokers/straits-financial-group/platforms) | [Alternatives](https://volsurfacedesk.com/brokers/straits-financial-group/alternatives) | [Markets](https://volsurfacedesk.com/brokers/straits-financial-group/markets) | [US Audit](https://volsurfacedesk.com/brokers/straits-financial-group/jurisdiction/us) | [UK Audit](https://volsurfacedesk.com/brokers/straits-financial-group/jurisdiction/gb) | [SG Audit](https://volsurfacedesk.com/brokers/straits-financial-group/jurisdiction/sg)

## 10M-URL Encyclopedia Directories: Crypto, Markets, Comparisons, Rankings & Verification

- [Digital Asset & VASP Compliance Directory (`/crypto`)](https://volsurfacedesk.com/crypto): Institutional digital asset profiles, VASP licensing frameworks, and cross-exchange liquidity telemetry.
- [Digital Asset & VASP Compliance Dossiers (`/crypto/[slug]`)](https://volsurfacedesk.com/crypto/[slug]): Per-asset regulatory classification, listed regulated venues, and symbology specs (e.g. [Bitcoin](https://volsurfacedesk.com/crypto/bitcoin), [Ethereum](https://volsurfacedesk.com/crypto/ethereum), [Solana](https://volsurfacedesk.com/crypto/solana)).
- [Global Exchange Contract Specifications Hub (`/markets`)](https://volsurfacedesk.com/markets): 203,112 exchange contract specifications, tick sizes, margin schedules, and cross-venue feed mappings.
- [Exchange Contract Specification Dossier (`/markets/[provider]/[symbol]`)](https://volsurfacedesk.com/markets/[provider]/[symbol]): Granular venue-symbol contract parameters and regulatory oversight (e.g. [BINANCE:BTCUSDT](https://volsurfacedesk.com/markets/binance/btcusdt), [COINBASE:BTCUSD](https://volsurfacedesk.com/markets/coinbase/btcusd), [KRAKEN:XBTUSD](https://volsurfacedesk.com/markets/kraken/xbtusd)).
- [1v1 Institutional Peer Comparisons Hub (`/compare`)](https://volsurfacedesk.com/compare): Quantitative head-to-head counterparty benchmarking matrix.
- [1v1 Institutional Peer Comparison Dossier (`/compare/[slugA]-vs-[slugB]`)](https://volsurfacedesk.com/compare/[slugA]-vs-[slugB]): Deterministic 5D rating, licence tier, and fee differential analysis.
- [OANDA vs Saxo Institutional Comparison](https://volsurfacedesk.com/compare/oanda-vs-saxo): Head-to-head regulatory tier, safety score, fee structure, and execution venue comparison.
- [Saxo vs Straits Financial Group Institutional Comparison](https://volsurfacedesk.com/compare/saxo-vs-straits-financial-group): Head-to-head regulatory tier, safety score, fee structure, and execution venue comparison.
- [Straits Financial Group vs StoneX One Institutional Comparison](https://volsurfacedesk.com/compare/straits-financial-group-vs-stonex-one): Head-to-head regulatory tier, safety score, fee structure, and execution venue comparison.
- [StoneX One vs AvaTrade Institutional Comparison](https://volsurfacedesk.com/compare/stonex-one-vs-avatrade): Head-to-head regulatory tier, safety score, fee structure, and execution venue comparison.
- [AvaTrade vs Inter Pan Institutional Comparison](https://volsurfacedesk.com/compare/avatrade-vs-inter-pan): Head-to-head regulatory tier, safety score, fee structure, and execution venue comparison.
- [Regulatory Score Leaderboards Hub (`/rankings`)](https://volsurfacedesk.com/rankings): Multi-faceted institutional rankings by supervisory tier, risk score, jurisdiction, and asset class.
- [Faceted Regulatory Score Leaderboard (`/rankings/[facet]`)](https://volsurfacedesk.com/rankings/[facet]): Specialized leaderboards including [Overall Score](https://volsurfacedesk.com/rankings/overall-score), [Tier-1 Regulated](https://volsurfacedesk.com/rankings/tier-1-regulated), [Lowest Risk](https://volsurfacedesk.com/rankings/lowest-risk), and [Crypto Exchanges](https://volsurfacedesk.com/rankings/crypto-exchanges).
- [Deterministic Licence & Domain Verification Hub (`/verify`)](https://volsurfacedesk.com/verify): Real-time regulatory register lookup and clone-domain authenticity scanner.
- [Licence Number Verification (`/verify/license/[number]`)](https://volsurfacedesk.com/verify/license/[number]): Direct certificate number verification against primary supervisory registries.
- [Official Domain & Clone Verification (`/verify/domain/[domain]`)](https://volsurfacedesk.com/verify/domain/[domain]): Domain provenance verification and suspected clone warning cross-check.
- [Master HTML Sitemap & Directory (`/directory`)](https://volsurfacedesk.com/directory): Hierarchical HTML sitemap indexing all institutional dossiers, regulators, markets, comparisons, and briefings.

## 10-Language International Portals

- [English (Default)](https://volsurfacedesk.com/): Primary institutional edition (`en`).
- [Simplified Chinese (简体中文 — `/zh-Hans`)](https://volsurfacedesk.com/zh-Hans): Localized institutional encyclopedia, regulatory ratings, and verification portal.
- [Traditional Chinese (繁體中文 — `/zh-Hant`)](https://volsurfacedesk.com/zh-Hant): Localized institutional encyclopedia, regulatory ratings, and verification portal.
- [Japanese (日本語 — `/ja`)](https://volsurfacedesk.com/ja): Localized institutional encyclopedia, regulatory ratings, and verification portal.
- [Korean (한국어 — `/ko`)](https://volsurfacedesk.com/ko): Localized institutional encyclopedia, regulatory ratings, and verification portal.
- [Spanish (Español — `/es`)](https://volsurfacedesk.com/es): Localized institutional encyclopedia, regulatory ratings, and verification portal.
- [Portuguese (Português — `/pt`)](https://volsurfacedesk.com/pt): Localized institutional encyclopedia, regulatory ratings, and verification portal.
- [Arabic (العربية — `/ar`)](https://volsurfacedesk.com/ar): Localized institutional encyclopedia, regulatory ratings, and verification portal.
- [Vietnamese (Tiếng Việt — `/vi`)](https://volsurfacedesk.com/vi): Localized institutional encyclopedia, regulatory ratings, and verification portal.
- [Thai (ไทย — `/th`)](https://volsurfacedesk.com/th): Localized institutional encyclopedia, regulatory ratings, and verification portal.

## Open JSON APIs (`/api/v1/*`)

- [Broker Dossier JSON API (`/api/v1/brokers/[slug]`)](https://volsurfacedesk.com/api/v1/brokers/[slug]): Machine-readable institutional profile, 5D ratings, licences, and risk telemetry.
- [Market Contract Specification JSON API (`/api/v1/markets/[provider]/[symbol]`)](https://volsurfacedesk.com/api/v1/markets/[provider]/[symbol]): Structured contract specification, venue mapping, and supervisory coverage.
- [1v1 Institutional Comparison JSON API (`/api/v1/compare/[pair]`)](https://volsurfacedesk.com/api/v1/compare/[pair]): Side-by-side counterparty comparison payload for `[slugA]-vs-[slugB]`.
- [Regulatory Leaderboard JSON API (`/api/v1/rankings/[facet]`)](https://volsurfacedesk.com/api/v1/rankings/[facet]): Ranked institutional leaderboard dataset by facet.
- [Licence Verification JSON API (`/api/v1/verify/license`)](https://volsurfacedesk.com/api/v1/verify/license): Deterministic regulatory certificate lookup endpoint.
- [Domain Verification JSON API (`/api/v1/verify/domain`)](https://volsurfacedesk.com/api/v1/verify/domain): Deterministic domain authenticity and clone-flag verification endpoint.