{"title":"2019冠状病毒病期间全球航空股指数的黄金:对冲还是避险资产?","authors":"Nedal Al-Fayoumi , Bana Abuzayed , Elie Bouri","doi":"10.1016/j.jairtraman.2025.102791","DOIUrl":null,"url":null,"abstract":"<div><div>We examine whether airline industry investors can gain hedging and/or safe-haven benefits from holding gold in a portfolio of global and regional airline stocks during the COVID-19 pandemic. Using daily data from June 8, 2016 until June 8, 2021, we employ multivariate GARCH models and show partial co-volatility spillovers of negative signs and evidence of weak but unstable correlations between gold and each of the four global/regional airline stock indices. We calculate hedge ratios, optimal weights, and hedging effectiveness and reveal that, during the peak of the pandemic, global airline investors expanded their investment in gold as a “flight-to-safety” asset, leading to substantial hedging effectiveness. Finally, we run regression models and the results indicate that gold is not a strong safe-haven asset against the downside risk of airline stock indices but acts as a strong hedge in many cases. Our findings are robust to the choice of the multivariate GARCH model.</div></div>","PeriodicalId":14925,"journal":{"name":"Journal of Air Transport Management","volume":"127 ","pages":"Article 102791"},"PeriodicalIF":3.9000,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Gold for global airline stock indices during COVID-19: Hedge or safe-haven asset?\",\"authors\":\"Nedal Al-Fayoumi , Bana Abuzayed , Elie Bouri\",\"doi\":\"10.1016/j.jairtraman.2025.102791\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>We examine whether airline industry investors can gain hedging and/or safe-haven benefits from holding gold in a portfolio of global and regional airline stocks during the COVID-19 pandemic. Using daily data from June 8, 2016 until June 8, 2021, we employ multivariate GARCH models and show partial co-volatility spillovers of negative signs and evidence of weak but unstable correlations between gold and each of the four global/regional airline stock indices. We calculate hedge ratios, optimal weights, and hedging effectiveness and reveal that, during the peak of the pandemic, global airline investors expanded their investment in gold as a “flight-to-safety” asset, leading to substantial hedging effectiveness. Finally, we run regression models and the results indicate that gold is not a strong safe-haven asset against the downside risk of airline stock indices but acts as a strong hedge in many cases. Our findings are robust to the choice of the multivariate GARCH model.</div></div>\",\"PeriodicalId\":14925,\"journal\":{\"name\":\"Journal of Air Transport Management\",\"volume\":\"127 \",\"pages\":\"Article 102791\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2025-05-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Air Transport Management\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0969699725000547\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"TRANSPORTATION\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Air Transport Management","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0969699725000547","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"TRANSPORTATION","Score":null,"Total":0}
Gold for global airline stock indices during COVID-19: Hedge or safe-haven asset?
We examine whether airline industry investors can gain hedging and/or safe-haven benefits from holding gold in a portfolio of global and regional airline stocks during the COVID-19 pandemic. Using daily data from June 8, 2016 until June 8, 2021, we employ multivariate GARCH models and show partial co-volatility spillovers of negative signs and evidence of weak but unstable correlations between gold and each of the four global/regional airline stock indices. We calculate hedge ratios, optimal weights, and hedging effectiveness and reveal that, during the peak of the pandemic, global airline investors expanded their investment in gold as a “flight-to-safety” asset, leading to substantial hedging effectiveness. Finally, we run regression models and the results indicate that gold is not a strong safe-haven asset against the downside risk of airline stock indices but acts as a strong hedge in many cases. Our findings are robust to the choice of the multivariate GARCH model.
期刊介绍:
The Journal of Air Transport Management (JATM) sets out to address, through high quality research articles and authoritative commentary, the major economic, management and policy issues facing the air transport industry today. It offers practitioners and academics an international and dynamic forum for analysis and discussion of these issues, linking research and practice and stimulating interaction between the two. The refereed papers in the journal cover all the major sectors of the industry (airlines, airports, air traffic management) as well as related areas such as tourism management and logistics. Papers are blind reviewed, normally by two referees, chosen for their specialist knowledge. The journal provides independent, original and rigorous analysis in the areas of: • Policy, regulation and law • Strategy • Operations • Marketing • Economics and finance • Sustainability