Stock markets around the world went down on Wednesday. This was mainly because the U.S. put in place stricter rules on selling advanced computer chips used for AI, which badly affected companies like Nvidia.

The S&P 500 index is expected to go down by 1.2%, and the Dow Jones Industrial Average is expected to go down by 0.6%.

Shares of the computer chip company Nvidia went down by 6.3% after the US government put more rules on selling one of its chips to other countries. This chip is used for artificial intelligence. Shares of AMD, another chip company, also went down by 7.1% after the US stock markets closed.

Worries about a trade war started again after the Trump government announced they would investigate importing important minerals like rare earths. These minerals are used in products such as smartphones, electric cars, and many other things.

Early on in European trading, the FTSE 100 in Britain went down by 0.2% to 8,233.10. This happened after the government announced that inflation in the U.K. had decreased for the second month in a row in March. The main reason for this fall was lower gas prices.

In Germany, the stock market index called the DAX went down by 0.7%, reaching 21,107.68 points. At the same time, in Paris, the CAC 40 index decreased by 0.6%, going to 7,289.67 points.

Stock prices in China dropped the most in the area after the Chinese government said the country's economy grew well, by 5.4% over the past year. This was because factories made a lot, people bought a lot, and exports were strong. But, if you compare it to the three months before, growth was slower. It went from 1.6% at the end of 2024 down to 1.2% from January to March.

The Hong Kong stock market went down by 2%, reaching 20,922.54, but the Shanghai stock market went up slightly by 0.1% to 3,271.19 after falling earlier.

Economists in private companies have lowered their predictions. This is because President Donald Trump recently increased taxes on most goods from China to 145%, and China also increased its taxes on goods from the U.S. to 125%.

Experts at ANZ Research said that business activity is already getting weaker this quarter.

Raymond Yeung and other researchers from ANZ said in a report that they believe the problems for businesses are caused more by the sudden and unexpected changes in tariffs than by the tariffs themselves. They also said that President Trump's announcements have influenced how businesses feel and what they do.

In Tokyo, the main stock market index, the Nikkei 225, went down by 1% to 33,920.40. This happened because of big technology companies. For example, Advantest, a company that makes equipment for testing computer chips, saw its shares fall by 6.6%. Also, Disco Corp.'s shares dropped sharply by 8%.

South Korea's main stock index, the Kospi, fell by 1.2% to 2,447.43. In Australia, the S&P/ASX 200 also went down a little, by less than 0.1%, to 7,758.90.

The stock market in India, called Sensex, didn't change much, and the SET in Bangkok went down a little, by 0.1%.

On Tuesday, American stocks moved slightly lower. The S&P 500 fell 0.2%, the Dow dropped 0.4%, and the Nasdaq composite went down by less than 0.1%.

Because President Donald Trump's tariffs made things uncertain, investors waited to see what would happen next.

The U.S. bond market seemed calmer after last week's sudden and big changes made people question if U.S. government bonds were still a safe place for their money when things are risky.

The rate on the 10-year government bond stayed at 4.33%. This was lower than 4.38% late on Monday and 4.48% at the end of last week. A week before, it was only 4.01%. Rates often fall when people are worried, so the changes this week have made people feel better.

The value of the U.S. dollar also became stable after falling last week. People are now more worried that Trump's trade war might be hurting its position as a safe investment.

Palantir Technologies' shares went up by 6.2% for the second day. This happened after NATO said it would use the company's AI technology in its operations with allied countries.

Also, on Wednesday, the price of U.S. oil went down by 69 cents to $60.64 a barrel, and the price of international oil dropped by 65 cents to $64.01 a barrel.

Because of Trump's tariffs, people think economies will grow more slowly, so they need less oil and other resources.

The value of the U.S. dollar went down to 142.26 Japanese yen from 143.24 yen, while the euro increased to $1.1377 from $1.1283.