In order to reconcile weak evidence of supply-side determinants of commonality in liquidity in previous studies, we examine commonality in liquidity in China over the period 1995–2012. Consistent with supply-side explanations, we find that market declines and market volatility increase liquidity commonality. To identify the direct relationship between the supply-side determinants and commonality in liquidity, we provide two specific tests and show that an increase in market participants has a negative effect on liquidity commonality, while the split-share-structure reform in 2005–2007 that results in a large increase in shares supply has a positive impact on liquidity commonality. Finally, we find that commonality in liquidity also has a real impact on the economy.

This paper investigates the impacts of defined-benefit (DB) pension plans on the corporate investment choices between diversifying and non-diversifying investments. We find a firm's DB plan coverage is negatively associated with its propensity of making a major investment. Subject to a major investment decision, however, the firms with higher DB plan coverage is more likely to diversify, i.e. acquire firms abroad or in other industries, rather than invest in fixed assets or make non-diversifying (i.e. domestic horizontal) acquisitions. Moreover, in diversifying acquisitions, they are more likely to invest in countries or industries with strongly unionized workforce. Further analysis on post-investment performance shows that firms with higher DB plan coverage experience a greater improvement in operating profitability after a diversifying acquisition, and the improvement mainly comes from a higher asset turnover rather than cost reduction. On the other hand, DB plan sponsoring firms experience a decline in profitability after a large capital expenditure or a non-diversifying acquisition. We propose both bargaining motive and conforming motive can explain these results.