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Despite the liberalization of foreign portfolio investment around the globe since the early 1980s, the home-bias phenomenon is still found to exist. Using a relatively new IMF survey dataset of cross-border equity holdings, this paper tests new structural equations from a consumption-based asset-pricing model on international portfolio holdings. Using of stock data allows us to provide new and clear-cut evidence on the determinants of international portfolio holdings. The empirical results show that an augmented gravity model performs remarkably well. The results indicate that market size, transaction cost, and information asymmetry are major determinants of cross-border portfolio choice. These findings shed light on alternative theories of international portfolio holdings, especially on the transaction and information cost-based explanations of home bias.
This paper employs a unique cross-border equity position dataset from the IMF to investigate the determinants of international portfolio holdings in a wide range of countries. It is observed that, besides the home bias phenomenon, there is considerable geographical bias in the cross-border portfolio holdings - investors tend to hold more securities in countries closer to them in distance. We estimate that if the distance between two counties doubles the cross-border equity holdings are reduced by 68%. This paper first derives structural equations from a consumption-based asset pricing model and then applies them to analyze the effect of distance, information and transaction costs on international portfolio holdings. The results indicate that, by explicitly introducing information and transaction costs into the model, the heterogeneity of cross-border holdings and a great part of the home bias puzzle can be explained.
This paper uses data on foreign stock ownership in Japan from 1975 to 1991 to examine the determinants of the home bias in portfolio holdings. Existing models of international portfolio choice predicting that foreign investors hold national market portfolios or portfolios tilted towards high expected return stocks are inconsistent with the evidence provided in this paper. We document that foreign investors overweight shares of firms in manufacturing industries, large firms, firms with good accounting performance, firms with low unsystematic risk, and firms with low leverage. Controlling for size, there is evidence that small firms that export more have greater foreign ownership. Foreign investors do not perform significantly worse than if they held the Japanese market portfolio, however. After controlling for firm size, there is no evidence that foreign ownership is related to expected returns of shares. We show that a model with size-based informational asymmetries and deadweight costs can yield asset allocations consistent with our evidence.
This paper defines financial market spillovers as the comovement between two countries’ financial markets and analyzes financial market spillovers over the period 2001-12 through four channels: bilateral portfolio investment, bilateral trade, home bias, and country concentration. The paper finds that, if a country has a large amount of bilateral portfolio exposure in another country, these two countries’ comovement of bond yields are large. Also, countries’ geographical preferences impact financial spillovers; if a country has a stronger home bias, the country could have less spillovers from foreign financial markets. A policy implication from this result is that, if countries become less home-biased and have a greater amount of portfolio investment assets, they should strengthen prudential regulations to mitigate against rising risks of financial spillovers (or risk greater volatility owing to comovement with foreign markets).
Home bias - the empirical phenomenon that investors assign anomalously high weights to their own domestic assets - has puzzled academics for decades: financial theory predicts that an internationally well diversified portfolio of stocks and short-term bonds can reduce risk significantly without affecting expected return. Although the globalization of international equity markets has increased international investments, equity portfolios remain severely home biased today, and no single explanation seems to solve the puzzle completely. In this paper, we first provide a thorough description of the equity home bias phenomenon by defining, discussing, and applying the competing measures and presenting some estimates of the costs of under-diversification. Second, we evaluate the explanations for the equity home bias proposed in the literature such as information asymmetries, behavioral aspects, barriers to foreign investment, and governance issues, and conclude that each explanation on its own falls short, suggesting that the equity home bias probably reflects a combination of factors. Lastly, we review the implications of international under-diversification for portfolio formation and the cost of capital of companies.
When marginal utility of consumption depends on leisure, investors will take this into account when allocating their wealth among different assets. This paper presents a multi-country general equilibrium model driven by productivity shocks, where labor-leisure and consumption are chosen endogenously. We use this framework to study the effect of leisure for optimal international diversification. We find that in the symmetric case the model's ability to help explain home-bias depends crucially on the level of substitutability between consumption and leisure.