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Synthetic Options and Implied Volatility for the Corporate Bond Market

Journal of Financial and Quantitative Analysis 2023 58(3), 1295-1325 open access
We synthetically create option contracts on a corporate bond index using CDX swaptions, overcoming the limitations that stem from the lack of traded corporate bond options. Our approach allows us to estimate forward-looking moments concerning the corporate bond market in a model-free manner. By constructing an aggregate volatility measure and the associated variance risk premium, we examine the role of volatility risk in the corporate bond market. We highlight that the ex ante conditional second and higher moments we estimate from synthetic corporate bond options carry important implications for credit risk models, providing an extra basis for testing their validity.

Data versus Collateral

Review of Finance 2023 27(2), 369-398 open access
Using a unique dataset of more than 2 million Chinese firms that received credit from both an important big tech firm (Ant Group) and traditional commercial banks, this paper investigates how different forms of credit correlate with local economic activity, house prices, and firm characteristics. We find that big tech credit does not correlate with local business conditions and house prices when controlling for demand factors, but reacts strongly to changes in firm characteristics, such as transaction volumes and network scores used to calculate firm credit ratings. By contrast, both secured and unsecured bank credit react significantly to local house prices, which incorporate useful information on the environment in which clients operate and on their creditworthiness. This evidence implies that the wider use of big tech credit could reduce the importance of the collateral channel but, at the same time, make lending more reactive to changes in firms’ business activity.

Carrying on the family's legacy: Male heirs and firm innovation

Journal of Corporate Finance 2021 69, 101976 open access
We predict that entrepreneurs are more likely to have a long-term orientation to their decision making if they have male heirs, because traditionally sons, not daughters, have been expected to carry on the family business. Our results support this prediction. Specifically, we find that when entrepreneurs have at least one son, have more sons, and have a firstborn son, their firms are more innovative. The results are robust to a battery of robustness tests, including alternative measures of innovation, instrumental variable approach, and Heckman two-step correction for selection bias. Our further analyses show that the positive association between male heirs and firm innovation is stronger for entrepreneurs with a greater son preference and is weaker for entrepreneurs who more impacted by the one-child policy.