{"title":"基于cvar的风险奇偶模型与机器学习","authors":"Jiliang Sheng , Lanxi Chen , Huan Chen , Yunbi An","doi":"10.1016/j.pacfin.2025.102857","DOIUrl":null,"url":null,"abstract":"<div><div>This study proposes a risk parity model based on conditional value-at-risk (CVaR), enhanced by integrating machine learning techniques into dynamic portfolio optimization. The CVaR-based risk parity (CVaR-RP) model allocates portfolio tail risk among assets evenly to mitigate downside risk. To enhance the CVaR-RP's predicting accuracy and adaptability to changing market conditions, we use a two-stage training approach within machine learning algorithms to forecast asset price movements. Portfolios are dynamically rebalanced based on these predictions to optimize the trade-off between risk mitigation and return maximization. Numerical analysis shows that the CVaR-RP strategy outperforms volatility-based risk parity and equal-weight strategies. Specifically, with machine learning-driven predictions and dynamic weight adjustments, the CVaR-RP achieves a higher Sharpe ratio, reduced maximum drawdown, and improved Calmar ratio. This research highlights the effectiveness of integrating machine learning methods into CVaR-RP strategies in enhancing returns and mitigating downside risk.</div></div>","PeriodicalId":48074,"journal":{"name":"Pacific-Basin Finance Journal","volume":"93 ","pages":"Article 102857"},"PeriodicalIF":5.3000,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"CVaR-based risk parity model with machine learning\",\"authors\":\"Jiliang Sheng , Lanxi Chen , Huan Chen , Yunbi An\",\"doi\":\"10.1016/j.pacfin.2025.102857\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study proposes a risk parity model based on conditional value-at-risk (CVaR), enhanced by integrating machine learning techniques into dynamic portfolio optimization. The CVaR-based risk parity (CVaR-RP) model allocates portfolio tail risk among assets evenly to mitigate downside risk. To enhance the CVaR-RP's predicting accuracy and adaptability to changing market conditions, we use a two-stage training approach within machine learning algorithms to forecast asset price movements. Portfolios are dynamically rebalanced based on these predictions to optimize the trade-off between risk mitigation and return maximization. Numerical analysis shows that the CVaR-RP strategy outperforms volatility-based risk parity and equal-weight strategies. Specifically, with machine learning-driven predictions and dynamic weight adjustments, the CVaR-RP achieves a higher Sharpe ratio, reduced maximum drawdown, and improved Calmar ratio. This research highlights the effectiveness of integrating machine learning methods into CVaR-RP strategies in enhancing returns and mitigating downside risk.</div></div>\",\"PeriodicalId\":48074,\"journal\":{\"name\":\"Pacific-Basin Finance Journal\",\"volume\":\"93 \",\"pages\":\"Article 102857\"},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2025-06-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Pacific-Basin Finance Journal\",\"FirstCategoryId\":\"96\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0927538X25001945\",\"RegionNum\":2,\"RegionCategory\":\"经济学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"BUSINESS, FINANCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Pacific-Basin Finance Journal","FirstCategoryId":"96","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0927538X25001945","RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BUSINESS, FINANCE","Score":null,"Total":0}
CVaR-based risk parity model with machine learning
This study proposes a risk parity model based on conditional value-at-risk (CVaR), enhanced by integrating machine learning techniques into dynamic portfolio optimization. The CVaR-based risk parity (CVaR-RP) model allocates portfolio tail risk among assets evenly to mitigate downside risk. To enhance the CVaR-RP's predicting accuracy and adaptability to changing market conditions, we use a two-stage training approach within machine learning algorithms to forecast asset price movements. Portfolios are dynamically rebalanced based on these predictions to optimize the trade-off between risk mitigation and return maximization. Numerical analysis shows that the CVaR-RP strategy outperforms volatility-based risk parity and equal-weight strategies. Specifically, with machine learning-driven predictions and dynamic weight adjustments, the CVaR-RP achieves a higher Sharpe ratio, reduced maximum drawdown, and improved Calmar ratio. This research highlights the effectiveness of integrating machine learning methods into CVaR-RP strategies in enhancing returns and mitigating downside risk.
期刊介绍:
The Pacific-Basin Finance Journal is aimed at providing a specialized forum for the publication of academic research on capital markets of the Asia-Pacific countries. Primary emphasis will be placed on the highest quality empirical and theoretical research in the following areas: • Market Micro-structure; • Investment and Portfolio Management; • Theories of Market Equilibrium; • Valuation of Financial and Real Assets; • Behavior of Asset Prices in Financial Sectors; • Normative Theory of Financial Management; • Capital Markets of Development; • Market Mechanisms.