Abstract
This research explores the effects of adding bitcoin to an optimal portfolio (naive, long-only, unconstrained and semi-constrained) by relying on mean-CVaR in the Chinese market. Then backtesting to compare the performance of portfolios with and without bitcoin for each scenario is perfomed. Results show significant but weak correlations between various asset classes and bitcoin, implying a more mature financial profile of bitcoin in China compared to that in the west. Backtesting results show that the effect of adding bitcoin to optimal portfolios is not consistent over the entire out-of-sample period. The naive and the long-only strategy improved the risk-reward ratio up until the late 2013 price-crash with no significant advantages thereafter. Shorting strategies on the other hand, with or without leverage, fail to produce more efficient portfolios when bitcoin is added, and this is consistent over the entire out-of-sample period. The results also show that semi-annual rebalancing amplifies the advantages of adding bitcoin to most portfolios except for the semi-constrained portfolio, although the weights analysis show significant shifts in weights which might not represent a feasible strategy in realistic scenarios.
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