President Trump of the United States has announced that tariffs on imported semiconductors will be imposed within the next two weeks, with potential rates soaring as high as 300%. This announcement triggered a widespread decline in chip stocks, with Applied Materials experiencing a significant drop of over 14% in its share price. Conversely, UnitedHealth Group's share price surged by nearly 12%, fueled by news of Berkshire Hathaway taking a stake in the company.