{"enrichment":{"faq":[{"a":"Performance Attribution breaks down why your portfolio outperformed or underperformed its benchmark by isolating contributions from sector positioning, individual stock picks, and market timing. It uses Brinson decomposition, factor regression, and timing models to reveal the true drivers of excess return across multiple time periods.","q":"What is performance attribution analysis?"},{"a":"Performance Attribution decomposes portfolio returns into distinct components: sector allocation effects (how your sector bets performed), stock selection effects (how your picks beat sector benchmarks), and timing contributions (whether you bought/sold at opportune moments). Models like Treynor-Mazuy and Henriksson-Merton specifically isolate market-timing ability from pure security selection skill.","q":"How does performance attribution analyze stock selection vs market timing?"},{"a":"Yes. Performance Attribution uses multi-factor regression models to analyze your factor exposure and decompose returns into alpha (skill) and beta (systematic risk). This reveals which factors drove your outperformance and whether excess returns came from factor tilts or genuine stock-picking ability.","q":"Can performance attribution help with factor exposure and alpha/beta analysis?"},{"a":"Performance Attribution's Brinson decomposition breaks portfolio excess return into sector allocation effects and stock selection effects. It measures how much return came from over/underweighting sectors versus how much came from picking better stocks within those sectors, providing clear visibility into where your edge actually lies.","q":"What is the Brinson sector attribution model?"},{"a":"Performance Attribution tracks rolling performance metrics and factor exposures over time windows to detect style drift\u2014unintended shifts in your portfolio's risk profile or factor tilts. Rolling Sharpe ratios, information ratios, and factor loadings reveal whether your strategy remains consistent or has drifted from its intended approach.","q":"How does performance attribution detect style drift and rolling performance?"},{"a":"Performance Attribution compares your portfolio against appropriate benchmarks using risk-adjusted metrics including Information Ratio (excess return per unit of tracking error), Sharpe ratio, and capture ratios. These metrics contextualize your outperformance relative to the risk you took, separating luck from skill.","q":"What risk-adjusted metrics does performance attribution compare against benchmarks?"}],"shadow_tags":["return-decomposition","manager-skill-assessment","factor-exposure-modeling","risk-adjusted-metrics","market-timing-detection","sector-rotation-analysis","alpha-persistence-testing","benchmark-selection-framework","multi-period-attribution","style-drift-monitoring"],"summary_rewrite":"Break down why your portfolio outperformed or underperformed its benchmark by isolating contributions from sector positioning, individual stock picks, and market timing. Performance Attribution uses Brinson decomposition, factor regression, and timing models to reveal the true drivers of excess return across multiple time periods."},"files":[{"bytes":8697,"path":"agent/src/skills/performance-attribution/SKILL.md","sha256":"434df366d1ed46e9d16be2d2d3be891dd32112a18975a24f0dea81d1c88f0109","url":"https://skillfed.io/files/HKUDS/Vibe-Trading/performance-attribution/5b494615/SKILL.md"}],"id":"HKUDS/Vibe-Trading/performance-attribution","links":{"html":"https://skillfed.io/HKUDS/Vibe-Trading/performance-attribution","md":"https://skillfed.io/HKUDS/Vibe-Trading/performance-attribution.md","repo":"https://github.com/HKUDS/Vibe-Trading"},"meta":{"agents_supported":[],"first_seen":"2026-07-28","forks":4557,"language":"Python","last_updated":"2026-07-27","license":"MIT","name":"performance-attribution","publisher":"HKUDS","stars":28096},"relations":{"similar":[{"id":"JoelLewis/finance_skills/performance-attribution"},{"id":"JoelLewis/finance_skills/performance-metrics"},{"id":"JoelLewis/finance_skills/factor-investing"},{"id":"JoelLewis/finance_skills/statistics-fundamentals"},{"id":"JoelLewis/finance_skills/equities"},{"id":"JoelLewis/finance_skills/quantitative-valuation"},{"id":"JoelLewis/finance_skills/performance-reporting"},{"id":"longbridge/skills/longbridge-portfolio"},{"id":"JoelLewis/finance_skills/historical-risk"},{"id":"JoelLewis/finance_skills/bet-sizing"}]},"slug":{"owner":"HKUDS","repo":"Vibe-Trading","skill":"performance-attribution"},"version":"5b494615"}