5 Geopolitical Events with Highest Impact on S&P 500

3. Pearl Harbor (12/7/1941)

Initial Impact: -6.87%

30-days Impact: -2.90%

90-days Impact: -12.02%

Average impact: -7.26%

The attack on Pearl Harbor by the Imperial Japanese Navy Air Service surprised the US. The Pearl Harbor event was the beginning of the World War II. The Pearl Harbor attack is one of the major geopolitical events with the highest impact on the S&P 500.