Most shares around the world went down on Wednesday. This happened because the U.S. made new rules. These rules make it harder to sell computer chips for AI. This hurt companies like Nvidia.

The S&P 500 and the Dow Jones Industrial Average went down before the market opened.

The price of Nvidia's shares went down by 6.3% after the market closed. This happened because the U.S. made it more difficult for Nvidia to sell a computer chip used for artificial intelligence in other countries. The shares of another company that makes chips, AMD, also went down by 7.1% after the U.S. markets closed.

People started worrying about a trade war again. This was because the Trump government said they would study importing important minerals like rare earths. These minerals are used in phones and electric cars.

This morning, the main stock market in Britain, the FTSE 100, went down a little. This is because the government said that prices in the UK did not go up as much in March. This was mainly because gas prices were lower.

The stock market in Germany went down a little, and the market in Paris also dropped slightly.

Stock prices in China fell more than in other countries nearby. This happened after the Chinese government said their economy grew by 5.4% in the last three months. This growth was good because factories made many things, people bought many things, and the country sold many things to other countries. But the growth was slower than before. From January to March, it grew by 1.2%. This is less than the 1.6% growth in the last three months of the year before.

The stock market in Hong Kong went down 2%. The stock market in Shanghai went up a little, 0.1%.

Economists in private companies think the economy will not grow as much. This is because President Trump recently put higher taxes on most things from China. China also put higher taxes on things from the U.S.

Experts at ANZ Research said that businesses are not doing as well this quarter.

We think the problem with the new taxes is that they were a surprise, not the taxes themselves. President Trump's announcements have changed how businesses feel and what they do, said Raymond Yeung and other researchers.

In Tokyo, the main stock market index, the Nikkei 225, went down by 1% to 33,920.40. This was because the shares of big technology companies fell. For example, shares of Advantest went down by 6.6%, and shares of Disco Corp. went down by 8%.

Stock markets in South Korea and Australia went down a little.

The stock market in India, called the Sensex, did not change much. The stock market in Bangkok, called the SET, went down a little, by 0.1%.

On Tuesday, stock prices in the U.S. did not change much.

People who invest money were waiting to see what would happen because they were not sure about President Donald Trump's new taxes on goods from other countries.

The U.S. bond market looked more stable after the big changes last week. People were not as sure that U.S. government bonds were a safe place for their money when things were risky.

The interest rate on 10-year government bonds stayed at 4.33%. This was a bit lower than on Monday (4.38%) and lower than last week (4.48%). Two weeks ago, it was only 4.01%. Rates often go down when people are worried about money. So, this week's change might mean people feel safer.

The value of the U.S. dollar became more stable after falling a lot last week. This made people more worried that Trump's trade war could make it a less safe place to invest money.

Palantir Technologies' shares went up 6.2% for the second day. This is because NATO said they will use the company's AI technology to help them work together.

On Wednesday morning, the price of US oil went down by 69 cents. One barrel cost $60.64. The price of Brent oil, which is used in many countries, also went down by 65 cents. One barrel cost $64.01.

Because of Trump's taxes, people think the economies will grow more slowly, so people want less oil and other things.

The US dollar was 143.24 Japanese yen, but then it went down to 142.26 yen. The euro was $1.1283, but then it went up to $1.1377.