Supply chain disruptions lead to 40% stock price drop and increased equity risk.
Supply chain disruptions can significantly impact a company's stock price and equity risk. A study of 827 disruption announcements from 1989 to 2000 found that firms experiencing disruptions saw an average abnormal stock return of nearly -40%. This underperformance was most pronounced in the year before, the day of, and the year after the announcement. Firms did not quickly recover from these negative effects. Additionally, the equity risk of the firm increased by 13.50% in the year following the disruption announcement compared to the year before.