Abstract
This study finds that returns to stocks with relatively high market capitalizations lead returns to stocks with relatively low market capitalizations in Australian industry portfolios. These lead–lag patterns or positive cross-correlations are found in both daily and weekly returns and continue to hold even after the market factor is removed. The results for weekly returns are consistent with the findings of Hou (Rev Fin Stud 20:1113–1138, 2007) who found significant lead–lag effects in weekly returns to US industry portfolios. However while that study found stronger lead–lag effects for industries with relatively small average market capitalizations this study finds that industries with larger average market capitalizations have stronger lead–lag effects. This may be caused by industry momentum created by positive news to the leader stocks of an industry, and implies investors can gain significantly by investing in the smaller firms of prominent industries, following an earlier shock to the corresponding leader stocks.
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