This paper investigates the relationship between industrial diversification and firm valuation in a sample of 816 publicly listed firms in China. It contributes to the literature in three ways. First, it is one of the first studies of diversification and firm value in an emerging market dominated by partially privatized firms. Second, it explores the determinants of corporate diversification by considering some unique aspects of the agency and political conflicts inherent in China's transition toward a market economy. Third, it employs a number of empirical methodologies (instrumental variables estimation, the Heckman self-selection model, and propensity score matching) to examine the relationship between diversification and firm value. The paper finds that when the decision to diversify is modeled as an endogenous choice based on firm characteristics, multi-segment firms have significantly higher Tobin's q than single-segment firms, even after controlling for factors such as ownership structure, ownership concentration, and growth opportunities. In addition, government-controlled multi-segment firms have lower Tobin's q than non-government-controlled multi-segment firms, providing evidence in support of the political cost hypothesis of diversification. Moreover, non-government-controlled firms in growth industries that perform better are more likely to diversify. Overall, our results illustrate that the valuation effect of diversification depends on government control.

This study examines the relations between leverage and investment in China's listed firms, where corporate debt is principally provided by state-owned banks. We obtain three major findings. First, there is a negative relation between leverage and investment. Second, the negative relation between leverage and investment is weaker in firms with low growth opportunities and poor operating performance than in firms with high growth opportunities and good operating performance. Third, the negative relation between leverage and investment is weaker in firms with a higher level of state shareholding than in firms with a lower level of state shareholding. Overall, our results are consistent with the hypothesis that the state-owned banks in China impose fewer restrictions on the capital expenditures of low growth and poorly performing firms and also firms with greater state ownership. This creates an overinvestment bias in these firms.

In this paper we theoretically and empirically examine the interaction between hedging, financing, and investment decisions. A simple equilibrium model with costly financial distress suggests that as firms become more efficient at risky investments vis a vis low risk investments, they will borrow less, invest more in risky assets, and hedge more. The model also predicts a positive relationship between hedging and leverage – a result consistent with debt capacity arguments. We test the model empirically using a simultaneous equations framework to investigate the determinants of firm-level hedging, financing and investing decisions. The results strongly support the hypothesis that the hedging, financing and investment decisions are jointly determined. In addition, we find strong support for the central hypothesis that firms more efficient investing in risky technologies more aggressively hedge and use less debt financing in order to maximize their comparative advantage.

Mandatory audit partner rotation has been adopted in certain countries while audit firm rotation is still being debated in many places. Most of the extant research on the relation between auditor tenure and earnings quality provides evidence at the audit firm level. However, since audit firm tenure is correlated with partner tenure and audit firm rotation is more costly than partner rotation, it is important to know whether earnings quality is related to audit firm tenure, partner tenure, or both. We investigate this issue using a sample of Taiwanese companies for which the audit report must be signed by two partners with their names disclosed in the report. Using performance adjusted discretionary accruals as a proxy for earnings quality, we find that the absolute and positive values of discretionary accruals decrease significantly with partner tenure. After controlling for partner tenure, we find that absolute discretionary accruals decrease significantly with audit firm tenure. Our findings are not consistent with the arguments that earnings quality decreases with extended audit partner tenure and that audit firm rotation in addition to partner rotation would improve earnings quality. Our results are robust to alternative ways of measuring partner tenure under the dual signature system. However, since the audit reports do not disclose which partner is responsible for maintaining the auditor-client relationship, measurement errors in partner tenure remain an issue that cannot be fully addressed in the context of our study.