Seoul shares trim gains on profit-taking amid Iran deal doubts

Imagine a big store where people buy and sell pieces of companies, called stocks.

On Tuesday morning in Seoul, the prices of these pieces went up at first.

Then some people decided to sell to keep the money they had made, which is called profit-taking.

Because of this, the prices did not stay as high as they were at the start.

People were also worried because the United States and Iran might not make a peace deal.

If there is no deal, oil prices could stay high, and that can make things more expensive.

Companies that make computer chips did really well, like Samsung Electronics and SK hynix.

Some car and defense companies went down in price.

Many people are borrowing money to buy stocks, and the amount borrowed has grown a lot.

The stock market is still higher than before, just not as much as it was in the morning.