3.1. Returns to sorted portfolios
We first examine the effect of asset growth on subsequent stock returns using sorted portfolios. From
1981 to 2007, at the end of June in each year t, we sort stocks in each market into equal-weighted
portfolios based on AGt. The portfolios are held from July of year t to June of year t+ 1, and are monthly
rebalanced. Panel A of Table 2 report average monthly portfolio returns for each of the nine Asian
markets and all Asian markets including and excluding Japan (the largest stock market in the region).
For comparison, we also report the results for the U.S. market.6 For portfolios formed within a specific
market, we report returns in local currency. For portfolios formed using all stocks in the Asian region
(hereafter “all-Asia portfolios”, with or without Japan), we adjust stock returns by exchange rates so
that the reported returns are in terms of U.S. dollars. We also construct all-Asia portfolios by ranking
firms within each market first and then combining all firms with the same AG decile rank into one single
decile portfolio.
In each of the nine Asian markets, the portfolio with the lowest asset-growth stocks (D1) earns
higher monthly returns than the portfolio with the highest asset-growth stocks (D10). The D10–D1
return spreads are significantly negative in eight out of the nine markets, except for Taiwan (with
insignificantly negative spread). There are also cross-market variations. The equal-weighted decile
return spread is −0.74% for Japan while that in Thailand is as high as −1.88%. For the combined all-Asia
portfolios, the monthly D10–D1 decile spread is −1.04% (t=−5.31). When we exclude Japan but
combine firm deciles across all the other eight Asian markets, the monthly stock return spread (D10–D1)
is −1.12% (t=−4.54).
3.1. Returns to sorted portfoliosWe first examine the effect of asset growth on subsequent stock returns using sorted portfolios. From1981 to 2007, at the end of June in each year t, we sort stocks in each market into equal-weightedportfolios based on AGt. The portfolios are held from July of year t to June of year t+ 1, and are monthlyrebalanced. Panel A of Table 2 report average monthly portfolio returns for each of the nine Asianmarkets and all Asian markets including and excluding Japan (the largest stock market in the region).For comparison, we also report the results for the U.S. market.6 For portfolios formed within a specificmarket, we report returns in local currency. For portfolios formed using all stocks in the Asian region(hereafter “all-Asia portfolios”, with or without Japan), we adjust stock returns by exchange rates sothat the reported returns are in terms of U.S. dollars. We also construct all-Asia portfolios by rankingfirms within each market first and then combining all firms with the same AG decile rank into one singledecile portfolio.In each of the nine Asian markets, the portfolio with the lowest asset-growth stocks (D1) earnshigher monthly returns than the portfolio with the highest asset-growth stocks (D10). The D10–D1return spreads are significantly negative in eight out of the nine markets, except for Taiwan (withinsignificantly negative spread). There are also cross-market variations. The equal-weighted decilereturn spread is −0.74% for Japan while that in Thailand is as high as −1.88%. For the combined all-Asia
portfolios, the monthly D10–D1 decile spread is −1.04% (t=−5.31). When we exclude Japan but
combine firm deciles across all the other eight Asian markets, the monthly stock return spread (D10–D1)
is −1.12% (t=−4.54).
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