Date of Award

2025

Degree Type

Doctoral Dissertation

Degree Name

Doctor of Business Administration (DBA)

Department

Jack Welch College of Business & Technology

Comments

Submitted as partial fulfillment of the requirements for the degree of Doctor of Business Administration in Finance Sacred Heart University, Jack Welch College of Business and Technology, Sacred Heart University

DISSERTATION Number DBA 05.2025

Dissertation Supervisor

Dr. Mahfuja Malik

Committee Member

Dr. Kelly Duan

Committee Member

Dr. Michael D Herley

Abstract

This study examines the effects of component failures, regulatory actions, and safety violations on stock returns and market volatility in the U.S. aerospace sector. Using FAA incident reports, WRDS market data, and corporate disclosures, the analysis combines event study methodology with ARCH/GARCH volatility models and a multiple regression approach. The results reveal that while incident frequency does not significantly affect stock prices measured by abnormal returns, firm-specific financial indicators—such as cash holdings and book-to-market ratio—play a substantial role. The study highlights the limited explanatory power of traditional regression models and calls for the inclusion of market risk and investor sentiment factors. These insights are particularly valuable for investors, regulators, and strategists navigating risks in the aerospace industry.

JEL Classification

G14, G32, M41

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.


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