加密货币在多资产投资组合中的多元化收益:跨国证据

Jéfferson A. Colombo, Fernando I. L. Cruz, L. Paese, Renan X. Cortes
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引用次数: 5

摘要

使用21个发展中国家和发达国家的样本,我们分析了传统资产(股票,债券,房地产和商品)的多元化投资者是否可以从投资加密货币中受益。具体国家的分析表明,加密货币通常适合切线投资组合(最大夏普比率),但不适合或很少适合最小方差投资组合(MVP)。样本外分析表明,即使是已经从国际多元化中受益的全球投资组合,也可能喜欢少量投资于加密货币:在风险调整后的回报方面,平均方差最优和朴素的加密货币优于其他相同的投资组合。此外,汇率变动并不能推动这种更好的表现——它发生在本地(所有回报都以当地货币计价)和全球(所有回报都以美元计价)。我们还发现,在COVID-19大流行之前和之后,加密货币的多元化收益都出现了,加密货币的1/N投资组合呈现出更高的风险调整收益。我们的论文通过分析增加加密货币对发展中经济体和发达经济体样本的边际效应,并考虑到COVID-19危机后的最新数据,为文献提供了补充。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Diversification Benefits of Cryptocurrencies in Multi-Asset Portfolios: Cross-Country Evidence
Using a sample of 21 developing and developed countries, we analyze whether a well-diversified investor of traditional assets (stocks, bonds, real estate, and commodities) may benefit from investing in cryptocurrencies. Country-specific analyses indicate that cryptocurrencies usually fit in the tangent portfolio (maximum Sharpe ratio) but no -- or very little -- in the minimum variance portfolio (MVP). Out-of-sample analysis indicates that even global portfolios that already benefits from international diversification may enjoy investing marginally in cryptocurrencies: mean-variance optimal and naive with cryptocurrencies outperformed otherwise identical portfolios in terms of risk-adjusted returns. Besides, exchange rate movements do not drive this better performance -- it occurs for both local (all returns denominated in the local currency) and global perspectives (all returns in U.S. Dollars). We also find that cryptocurrencies' diversification benefits occur both before and after the COVID-19 pandemics, with the 1/N portfolio with cryptocurrencies presenting the higher risk-adjusted returns. Our paper adds to the literature by analyzing the marginal effects of adding cryptocurrencies on a sample of developing and developed economies and considering up-to-date data following the COVID-19 crisis.
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