This research is interested to evaluate the impact of COVID-19 on different stock markets globally. Therefore, we propose a new simulator that is entitled “The Massive Pandemic Contagious Diseases Damage on Stock Markets Simulator (φ-Simulator).” The main objective is to evaluate from a multidimensional graphical perspective the impact of COVID-19 on different stock markets globally. The φ-Simulator can evaluate the COVID-19 impact in the short and long-run. The main objective of the φ-Simulator is to make different simulations under different levels of massive pandemic contagious disease growth rates and the stock market growth rates performance simultaneously. The application of φ-Simulator can show the impact of COVID-19 in different stock markets such as S&P 500, TWSE, Shanghai Stock Exchange, Nikkei 225, DAX, Hang Seng, U.K.-FTSE, KRX, SGX, and Malaysia-FTSE. The issue of COVID-19 is a global issue, which requires an effective global integral medical assistance programs worldwide as well as a stronger and dynamic detection systems and vaccination research collaborations that will render richer welfare and will increase the opportunity to reduce the damage of COVID-19 on the stocks markets anytime and anywhere.