The US S&P 500 index reached a gain of 594% after 25 years since the September 11, 2001 terrorist attacks. The index went from 1,092.50 points at the close of September 10, 2001 to 7,591.70 points at the close of September 10, 2026. The New York Stock Exchange was closed on September 11 itself and only reopened on September 17. Since then, the index faced the 2008 financial crisis and the Covid-19 pandemic in 2020.
Before the attacks, General Electric held the top position in the S&P 500 with a market capitalization of $390 billion, followed by Microsoft with $309 billion and Exxon Mobil with $283 billion. The Top 10 was completed by Pfizer, Citigroup, Walmart, AIG, Intel, Johnson & Johnson and IBM.
Currently, there are 35 companies listed on stock exchanges around the world that are more valuable than General Electric was before September 11. Nvidia now occupies the top position in the S&P 500 with a market capitalization of $5.2 trillion, which represents 14 times more than General Electric's value before the attacks.
The current S&P 500 Top 10 includes Nvidia, Apple, Alphabet, Microsoft, Amazon, Broadcom, Meta, Tesla, Micron and Berkshire Hathaway, all exceeding $1 trillion in market capitalization. Among all these companies, only Microsoft remains in the Top 10 from before September 11 through September 2026.



