This thesis includes three topics on corporate finance: (1) Automation Exposure and Operating Performance, (2) Corporate Cash Shortfalls and External Financing: US vs Japan, and (3) Automation Exposure and M&A.

The first essay, "Automation Exposure and Operating Performance," finds empirical evidence that firms with increased automation exposure experience deteriorating operating performance in subsequent years. Further analysis shows that financially unconstrained firms are better positioned to mitigate this negative impact on their operating performance compared to financially constrained firms. However, unconstrained firms are drawn into an automation arms race, escalating their investments in capital, tangible assets, and R&D. This race, while aimed at maintaining a competitive edge, paradoxically leads to a greater deterioration in their financial health compared to their financially constrained counterparts.

In the second essay, "Corporate Cash Shortfalls and External Financing: US vs Japan," I find supporting evidence for the funding-horizon theory on external financing in both the US and Japan. I also find that repurchase and subnormal cash holding are important motives for debt issuance, while debt reduction is an important motive for equity issuance. Japanese firms are much less likely to issue debt and equity compared to US firms. The results suggest that this difference is due to the lower leverage used by Japanese firms and the fact that Japanese firms tend to be mature with fewer cash needs for growth.

In the third essay, “Automation Exposure and M&A,” I find evidence that firms with high automation exposure are more likely to be involved in M&A transactions. High automation exposure firms with high R&D, profitability, cash holding, market value, and low leverage tend to be acquirers, while firms with the reverse characteristics tend to be targets. I further find that automation facilitates M&A transactions when product similarity is high. Consistent with the findings from my first essay on the automation arms race, acquisitions for automation purposes result in a "winner's curse," where the acquiring firms face greater financial constraints and lower operating profits in the following period.