Phân tích tư tưởng của nhân dân qua đoạn thơ: Những người vợ nhớ chồng… Những cuộc đời đã hóa sông núi ta trong Đất nước của Nguyễn Khoa Điềm
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Our first new result is that risk-based models fit the stock return comove-
ments between our portfoliosmuch better than theHeston–Rouwenhorstmodel
does. In particular, the APT and a Fama–French (1998) type model with global
and regional factors fit the data particularly well. Second, in examining time
trends in country return correlations, we find a significant upward trend for
stock return correlations only within Europe. Third, we revisit the country-
industry debate by examining the relative evolution of correlations across coun-
try portfolio returns versus correlations across industry portfolio returns.While
industry correlations seem to have decreased in relative terms over the 1990s,
this evolution has been halted and reversed, and there...
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