Yes, both the US stock market and the global stock market plunged.

after the p>911 incident, American investors began to panic and sell their stocks, which led to a sharp drop in the stock market. Within a week, the Dow Jones index, Nasdaq index and S&P index fell by 14.3%, 16.1% and 11.6% respectively, and the stock was estimated to shrink by 1.4 trillion US dollars.

although the bush administration injected a lot of money into the stock market, panic selling was still inevitable after the market reopened on September 17th, and the major stock indexes kept falling to the lowest point in three years.

The damage caused by this incident to the global economy even reached about $1 trillion. The psychological impact of this incident on the American people is extremely far-reaching, and the American people's sense of economic and political security has been seriously weakened.

Extended information:

The cause of the incident

Among all kinds of arguments in American ideological circles, the theory of "clash of civilizations" has become one of the main arguments to interpret the root of the "9.11" incident. Many media in the world point out that the important root of terrorism is the Middle East policy of the United States.

The long-term military conflict between Israel and Palestine, the killing of Palestinians by Israelis and the partiality of the United States towards Israel "created" fanatical radicals with determination to die. The British Broadcasting Corporation BBC and the French newspaper Le Monde all pointed out that "the crux of the problem lies in the US Middle East policy."

The British newspaper The Guardian, entitled "Justice is the Best Defense", pointed out that Americans must be "fair" in order to truly stop Osama's widespread support in Arab and Muslim societies.

Baidu encyclopedia-9.11 incident