{"id":233211,"date":"2025-10-23T12:15:09","date_gmt":"2025-10-23T16:15:09","guid":{"rendered":"https:\/\/ibkrcampus.com\/campus\/?p=233211"},"modified":"2025-10-23T12:20:42","modified_gmt":"2025-10-23T16:20:42","slug":"dispersion-trading-in-practice-the-dirty-version","status":"publish","type":"post","link":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/dispersion-trading-in-practice-the-dirty-version\/","title":{"rendered":"Dispersion Trading in Practice: The &#8220;Dirty&#8221; Version"},"content":{"rendered":"\n<p>Everyone loves the textbook dispersion trade: short index vol, long single stocks, vega-neutral. But the people who actually make money run the dirty version. Here&#8217;s why theory dies in backtests and practice wins in P&amp;L.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"697\" height=\"454\" data-src=\"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-1.png\" alt=\"Dispersion Trading in Practice\" class=\"wp-image-233212 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-1.png 697w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-1-300x195.png 300w\" data-sizes=\"(max-width: 697px) 100vw, 697px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 697px; aspect-ratio: 697\/454;\" \/><\/figure>\n\n\n\n<p>Source: Quant Insider<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-1-idea\">1. Idea<\/h2>\n\n\n\n<p>In theory,&nbsp;<strong>dispersion trading<\/strong>&nbsp;isolates the&nbsp;<em>correlation risk<\/em>&nbsp;embedded in index options. The clean (academic) setup can be described as follows:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Short index volatility<\/strong>&nbsp;(e.g., SPX options).<\/li>\n\n\n\n<li><strong>Long component stock volatility<\/strong>&nbsp;(options on the S&amp;P 500 constituents).<\/li>\n\n\n\n<li>Positions are sized to be&nbsp;<strong>vega-neutral<\/strong>&nbsp;across both legs, ensuring that the portfolio\u2019s exposure to the overall volatility level cancels out.<\/li>\n<\/ul>\n\n\n\n<p>Formally, for an equal-weighted index of&nbsp;<em>N<\/em>&nbsp;stocks:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1100\" height=\"277\" data-src=\"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula-1100x277.png\" alt=\"Dispersion Trading in Practice\" class=\"wp-image-233214 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula-1100x277.png 1100w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula-700x176.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula-300x76.png 300w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula-768x194.png 768w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula.png 1309w\" data-sizes=\"(max-width: 1100px) 100vw, 1100px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1100px; aspect-ratio: 1100\/277;\" \/><\/figure>\n\n\n\n<p>A dispersion trader is effectively&nbsp;<strong>short \u03c1 (rho)<\/strong>. If realized correlation falls (i.e., stocks move more idiosyncratically), the portfolio\u2019s P&amp;L rises; if correlations spike (i.e., during a systemic move), losses occur.<\/p>\n\n\n\n<p>In this idealized world:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Execution is frictionless.<\/li>\n\n\n\n<li>Volatility surfaces are continuous and arbitrage-free.<\/li>\n\n\n\n<li>Positions can be dynamically rebalanced without slippage.<\/li>\n\n\n\n<li>Funding and margin costs are ignored.<\/li>\n<\/ul>\n\n\n\n<p>That\u2019s the clean math.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. The Reality: Dirty Dispersion<\/h2>\n\n\n\n<p>Real dispersion books don&#8217;t isolate correlation perfectly because practical constraints dominate:<\/p>\n\n\n\n<p><strong>a. Execution Friction:<\/strong><br>You&#8217;re not trading one &#8220;index&#8221; vs. one &#8220;basket.&#8221; You&#8217;re trading 500 single names, each with its own bid-ask, greeks, and volatility skew. The moment you cross those spreads, your edge is gone. The theoretical 1\u20132 vol point edge in implied correlation can vanish in execution cost.<\/p>\n\n\n\n<p><strong>b. Vega Weighting vs. Gamma Risk:<\/strong><br>In practice, traders size on vega notionals (matching exposure per 1 vol point move). But correlation shocks hit through gamma, not vega. So a &#8220;vega-neutral&#8221; book isn&#8217;t truly correlation-neutral during stress \u2014 when index gamma explodes.<\/p>\n\n\n\n<p><strong>c. Funding &amp; Margin:<\/strong><br>Index short legs free margin, but long single-stock options require collateralized margin. Funding spreads compress your realized edge \u2014 dirty dispersion must include carry cost and financing P&amp;L. Market makers and vol-arb funds typically finance these through repo or securities lending desks, adding another layer of slippage.<\/p>\n\n\n\n<p><strong>d. Liquidity Asymmetry:<\/strong><br>Index options are deep and liquid \u2014 single-stock options aren&#8217;t. The skew and term-structure shapes differ widely across names. When we say &#8220;dirty,&#8221; we are talking about the impossibility of finding true parallel strikes and maturities across hundreds of single names. Each stock has unique idiosyncratic volatility smiles, dividend assumptions, and borrow rates.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. Dirty \u2260 Bad \u2014 It&#8217;s the Business<\/h2>\n\n\n\n<p>The &#8220;dirtness&#8221; is not a bug \u2014 it&#8217;s the trade. Prop firms (e.g., SIG, Citadel, Jane Street, Optiver) run their own versions of dispersion trading:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sometimes they hedge correlation exposure (long correlation during panic, short correlation during calm).<\/li>\n\n\n\n<li>Sometimes they run semi-static books with selective hedging.<\/li>\n\n\n\n<li>Others overlay dispersion on top of market-making inventory to offset skew risk.<\/li>\n<\/ul>\n\n\n\n<p>It&#8217;s not as simple as selling SPX volatility and buying the 500 constituent stocks. The real considerations are about market flows and why they exist. That\u2019s where the true alpha lies \u2014 the edge isn\u2019t in the math, it\u2019s in flow asymmetry:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dealers and hedgers are often forced sellers of correlation (e.g., through index puts).<\/li>\n\n\n\n<li>Vol-arb desks act as natural buyers, providing liquidity in the opposite direction.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">4. Dirty Dispersion P&amp;L Anatomy<\/h2>\n\n\n\n<p>Here&#8217;s how real P&amp;L attribution typically decomposes:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1087\" height=\"743\" data-src=\"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-2.png\" alt=\"Dispersion Trading in Practice\" class=\"wp-image-233216 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-2.png 1087w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-2-700x478.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-2-300x205.png 300w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-2-768x525.png 768w\" data-sizes=\"(max-width: 1087px) 100vw, 1087px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1087px; aspect-ratio: 1087\/743;\" \/><\/figure>\n\n\n\n<p>In clean dispersion, only the first term should exist. In dirty dispersion, the other four dominate your realized outcome.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-practical-example-setup-s-amp-p-style-equal-weighted-intuition\">Practical Example: Setup (S&amp;P-style, Equal-Weighted Intuition)<\/h2>\n\n\n\n<p><strong>Index implied vol:<\/strong>&nbsp;12%<\/p>\n\n\n\n<p><strong>Average single-stock implied vol:<\/strong>&nbsp;28%<\/p>\n\n\n\n<p>Implied correlation (toy identity under equal vols\/weights):<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"416\" height=\"72\" data-src=\"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula-2.png\" alt=\"Dispersion Trading in Practice\" class=\"wp-image-233217 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula-2.png 416w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula-2-300x52.png 300w\" data-sizes=\"(max-width: 416px) 100vw, 416px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 416px; aspect-ratio: 416\/72;\" \/><\/figure>\n\n\n\n<p>Ex post reality:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Realized correlation comes in at 0.12 (reflecting idiosyncratic movements, earnings dispersion).<\/li>\n\n\n\n<li>Assume the average single-stock volatility realizes near what was paid (for simplicity):&nbsp;<em>\u03c3\u0304<sub>stk<\/sub>&nbsp;\u2248 28%<\/em>.<\/li>\n<\/ul>\n\n\n\n<p>What that implies for the index leg: Implied index variance from the identity:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1037\" height=\"80\" data-src=\"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula-3.png\" alt=\"Dispersion Trading in Practice\" class=\"wp-image-233219 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula-3.png 1037w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula-3-700x54.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula-3-300x23.png 300w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-formula-3-768x59.png 768w\" data-sizes=\"(max-width: 1037px) 100vw, 1037px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1037px; aspect-ratio: 1037\/80;\" \/><\/figure>\n\n\n\n<p>Variance gap captured by a short-index \/ long-basket stance (directionally):<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0394Var \u2248 0.01444 \u2212 0.00941 = 0.00503 (vol\u00b2 points).<\/li>\n\n\n\n<li>Sanity check by square-rooting: implied index vol \u2248 12.0%, realized \u2248 9.7%.<\/li>\n\n\n\n<li>In theory, short index vol versus long single-stock vol benefits as correlation drops (0.184 \u2192 0.12).<\/li>\n\n\n\n<li>This represents the textbook&nbsp;<strong>&#8220;short-correlation&#8221;<\/strong>&nbsp;payoff.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Now the Dirty Part (Where Edge Dies If You&#8217;re Sloppy)<\/h3>\n\n\n\n<p><strong>Execution drag (basket reality):<\/strong>&nbsp;You don&#8217;t cross one spread, you cross a basket. Suppose you trade the top 200 names, and your average all-in spread toll works out to 1.5 bps per name (vega-weighted, in P&amp;L terms relative to index notional). Toll \u2248 200 \u00d7 1.5 bps = 300 bps \u2014 that&#8217;s 3% of index-notional P&amp;L equivalent on the round-trip. If your variance edge translates to only a few percent-of-vega across the life, 300 bps can nuke it.<\/p>\n\n\n\n<p><strong>Funding \/ carry:<\/strong>&nbsp;Long single-name options consume margin; index shorts free less than you think. Add ~50\u2013100 bps\/yr funding drag (repo, margin, borrow frictions). On a 3\u20136M trade horizon, knock off another 15\u201350 bps.<\/p>\n\n\n\n<p><strong>Surface mismatch (residual vega\/gamma):<\/strong>&nbsp;Your &#8220;vega-neutral&#8221; sizing doesn&#8217;t immunize gamma in a stress or skew curvature when names gap differently. Expect mark-to-market noise that can easily rival your theoretical correlation edge unless you rebalance ruthlessly \u2014 which costs more spread.<\/p>\n\n\n\n<p><strong>Clean math edge:<\/strong>&nbsp;Correlation drop from 0.184 \u2192 0.12 gives you a 0.0050 vol\u00b2 variance advantage (12.0% \u2192 9.7% implied-to-realized on the index leg, holding stock vols steady).<\/p>\n\n\n\n<p><strong>Dirty reality:<\/strong>&nbsp;300 bps basket crossing + carry\/funding 15\u201350 bps + mismatch\/gamma noise can fully offset that advantage unless you:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Restrict the basket (liquid names, tighter quotes),<\/li>\n\n\n\n<li>Time entries around known flow,<\/li>\n\n\n\n<li>Size on vega-notional but monitor gamma, and<\/li>\n\n\n\n<li>Automate rebalance logic to minimize churn.<\/li>\n<\/ul>\n\n\n\n<p>You can&#8217;t arbitrage correlation cleanly; you can only exploit flow imbalances when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The index vol is bid (systematic put demand),<\/li>\n\n\n\n<li>The single-stock vol is stale or under-reactive, and<\/li>\n\n\n\n<li>Your execution infrastructure can recycle the risk faster than it decays.<\/li>\n<\/ul>\n\n\n\n<p><em>The &#8220;dirty&#8221; in dirty dispersion is the alpha.<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Visualizations<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1 Correlation Term Structure: Theoretical vs Observed<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"745\" height=\"282\" data-src=\"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-3.png\" alt=\"Dispersion Trading in Practice\" class=\"wp-image-233222 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-3.png 745w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-3-700x265.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-3-300x114.png 300w\" data-sizes=\"(max-width: 745px) 100vw, 745px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 745px; aspect-ratio: 745\/282;\" \/><\/figure>\n\n\n\n<p><strong>Figure 1:<\/strong>&nbsp;Flows bend the correlation curve. Long-end hedging demand lifts index vol relative to single stocks, raising long-tenor implied correlation.<\/p>\n\n\n\n<p>Source: Quant Insider<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2 \u201cPure\u201d vs \u201cDirty\u201d Dispersion: P&amp;L Anatomy<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"775\" height=\"308\" data-src=\"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-4.png\" alt=\"Dispersion Trading in Practice\" class=\"wp-image-233223 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-4.png 775w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-4-700x278.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-4-300x119.png 300w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-4-768x305.png 768w\" data-sizes=\"(max-width: 775px) 100vw, 775px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 775px; aspect-ratio: 775\/308;\" \/><\/figure>\n\n\n\n<p><strong>Figure 2:<\/strong>&nbsp;The model says \u201cshort correlation earns carry\u201d; the desk says \u201conly if it survives execution, funding, and curvature mis-matches.\u201d<\/p>\n\n\n\n<p>Source: Quant Insider<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-execution-friction-schematic-optional\"><strong>3 Execution Friction Schematic (Optional)<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"754\" height=\"188\" data-src=\"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-5.png\" alt=\"Dispersion Trading in Practice\" class=\"wp-image-233264 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-5.png 754w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-5-700x175.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2025\/10\/Dispersion-Trading-Practice-QuantInsider-5-300x75.png 300w\" data-sizes=\"(max-width: 754px) 100vw, 754px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 754px; aspect-ratio: 754\/188;\" \/><\/figure>\n\n\n\n<p><strong>Figure 3:<\/strong>&nbsp;Execution frictions multiply across a large basket: you do not cross one spread, you cross hundreds.<\/p>\n\n\n\n<p>Source: Quant Insider<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201cPure\u201d dispersion is didactic: vega-neutral, correlation-isolated, frictionless.<\/li>\n\n\n\n<li>Real P&amp;L comes from dirty dispersion: flow-aware, execution-aware, funding-aware.<\/li>\n\n\n\n<li>You do not arbitrage correlation cleanly; you harvest correlation premia when index vol is flow-distorted, single-stock vol is slow, and your infrastructure recycles risk faster than costs erode it.<\/li>\n<\/ul>\n\n\n\n<p>Other articles by Quant Insider include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/return-causality-among-cryptocurrencies-evidence-from-a-rolling-window-toda-yamamoto-framework\/\">Return Causality among Cryptocurrencies: Evidence from a Rolling Window Toda\u2013Yamamoto Framework<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/implied-volatility-formulation-computation-and-robust-numerical-methods\/\">Implied Volatility: Formulation, Computation, and Robust Numerical Methods<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/a-practical-breakdown-of-vector-based-vs-event-based-backtesting\/\">A Practical Breakdown of Vector-Based vs. Event-Based Backtesting<\/a><\/li>\n<\/ul>\n\n\n\n<p>For more in-depth information, visit Quant Insider at this link: <a href=\"https:\/\/nam02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fquantinsider.io%2F&amp;data=05%7C02%7Cvpetrova%40interactivebrokers.com%7Ce0ff555360324342609208ddfc2826d9%7C7abd04ef837d48e69ba869d84f65a110%7C0%7C0%7C638943971594355043%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&amp;sdata=2wLT6XaQ97yU7HgU%2FtJzxqMYaw9Tz%2FY%2B96iM5zSVNDQ%3D&amp;reserved=0\">https:\/\/quantinsider.io\/<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In theory, dispersion trading isolates the correlation risk embedded in index options.<\/p>\n","protected":false},"author":1641,"featured_media":169574,"comment_status":"open","ping_status":"closed","sticky":true,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[343,349,338,341,9563],"tags":[19605,20672,6284,1670,19829,494,8169],"contributors-categories":[19857],"class_list":{"0":"post-233211","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-programing-languages","8":"category-python-development","9":"category-ibkr-quant-news","10":"category-quant-development","11":"category-options-quant","12":"tag-alpha-generation","13":"tag-dispersion-trading","14":"tag-gamma","15":"tag-hedging","16":"tag-implied-correlation","17":"tag-quant","18":"tag-vega","19":"contributors-categories-quant-insider"},"pp_statuses_selecting_workflow":false,"pp_workflow_action":"current","pp_status_selection":"publish","acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO 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