Abstract
Recent studies argue that CEO option compensation affects executives’ behavior toward risk. Specifically, the literature provides seemingly conflicting evidence regarding the impact of equity compensation (particularly option holding) on financing activities. We propose and test a nonlinear (e.g., inverted U-shaped) relation between corporate borrowing and option compensation. Consistent with our hypothesis, we empirically show that, in the low range of the option vega, a firm’s debt ratio increases as the option vega increases. However, in the high range of the option vega, we find the opposite relation. Our explanation is based on the contrasting effects of option compensation on managerial incentives toward risk. The positive wealth effect on leverage arises from the convexity of the option compensation, while a negative risk-premium effect exists due to managerial risk aversion. This reconciles the conflicting relation between leverage and option compensation that is often observed in the literature.
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Notes
Guay (1999) provides evidence that stock options significantly increase the convexity of the relation between managers’ wealth and stock price. We use a firm’s option vega to measure option convexity as in Guay (1999). The option vega is defined as the change in the manager’s option value for a given change in the value of stock return volatility.
The financial crisis of 2008–2009 has triggered an interesting recent literature that examines the relation between executive compensation structures and risk-taking behavior in the financial industry. Refer to Bhagat and Bolton (2014), Minhat and Abdullah (2016), and Gande and Kalpathy (2017). Also refer to Malmendier and Tate (2005) and Yung and Chen (2018) for empirical evidence of the relation between risk-taking investment and CEO characteristics such as confidence and ability.
It is well recognized in the literature that expected wealth increases with risk when a CEO’s stock-based compensation is convex. Refer to Jensen and Meckling (1976), Haugen and Senbet (1981), and Guay (1999), among others. Since the CEO faces a risky payoff from the incentive compensation, s/he demands a risk premium. Lewellen (2006) also recognizes the wealth benefit and volatility cost (due to the manager’s risk aversion) of option compensation. See Lambert et al. (1991), Carpenter (2000), Hall and Murphy (2002), and Ross (2004) for further review regarding the importance of risk aversion on the part of managers.
Lewellen (2006) argues that CEOs may have discretion over a firm’s capital structure because of imperfections in corporate governance, which motivates the inclusion of corporate governance variables as control variables. In fact, our results show significant impacts of some governance variables, such as CEO tenure, board independence, and board size.
Jiraporn and Chintrakarn (2013) also employ a second-order polynomial regression to check the inverted-U shaped relation between CEO pay slices and corporate social responsibility.
We recognize some attempts to minimize the endogeneity issue by examining the exogenous impact of CEO compensation on risk-taking behavior. For example, Hayes et al. (2012) examine the link between option compensation and risk-taking behavior by using Financial Accounting Standards (FAS) 123R and the change in accounting treatment of options. They do not find a strong relation between the option pay and risky investments. More recently, Tosun (2016) employs the Internal Revenue Code 162 tax law as an exogenous shock to compensation structure to consider firm leverage changes as a result of CEO option compensation changes.
We also employed firm fixed-effects regression and found insignificant results. The fixed-effects regression assumes that there is sufficient time variation in the option vega within firms. Similar to Coles et al. (2006) and Zhou (2001), we attribute the insignificant result in the firm fixed-effects analysis to the lack of variation in our sample’s option vega over time within firms.
We appreciate an anonymous referee for bringing up this excellent idea.
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Acknowledgements
We appreciate valuable feedback and encouragement from Catherine Choi, David Emmanuel, Vladimir Gatchev, Sulei Han, and Sangwon Lee. The guidance and feedback from Cheng-few Lee (Editor) and an anonymous referee were instrumental in significantly improving this manuscript. We also acknowledge that this work was supported by Global Research Network program through the Ministry of Education of the Republic of Korea and the National Research Foundation of Korea (NRF-2016S1A2A2912421).
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Appendix: Definitions of variables
Appendix: Definitions of variables
Variable name | Description |
---|---|
Vega | The sensitivity of the manager’s wealth to the firm’s stock return volatility as defined in Coles et al. (2006) |
Ln(1 + Vega) | The natural logarithm of (1 + vega of CEOs’ compensation) |
Delta | The sensitivity of the manager’s wealth to the firm’s stock price as defined in Coles et al. (2006) |
Ln(1 + Delta) | The natural logarithm of (1 + delta of CEOs’ compensation) |
Leverage | The ratio of total debt (debt in current liabilities + long-term debt) to total assets |
Asset | The natural log of assets |
MTB | The ratio of market value (book value of assets—less the book value of equity + the market value of equity) to total assets |
NWC | The ratio of net working capital to the total assets |
CAPX | The ratio of Capital investment (capital expenditures – sale of property) to total assets |
R&D | The ratio of R&D investment (research and development expense) to total assets |
Z-score | The modified z-score as defined in 1990 and is equal to 3.3(EBIT/Total Assets) + 1.0(Sales/Total Assets) + 1.4 (Retained Earnings/Total Assets) + 1.2 (Working Capital/Total Assets) |
ROA | The ratio of net income (operating income after depreciation plus depreciation) to total assets |
Divpayer | A dummy variable that is set to the value of one if the firm paid a dividend in the year |
Tenure | The number of years the CEO has served in position at given year |
Boardsize | The natural log of number of directors sitting on the board |
Boardindep | The percentage of independent non-executive directors on the board at given year |
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Choi, Y.K., Han, S.H. & Mun, S. The nonlinear relation between financing decisions and option compensation. Rev Quant Finan Acc 56, 1343–1356 (2021). https://doi.org/10.1007/s11156-020-00930-9
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DOI: https://doi.org/10.1007/s11156-020-00930-9