Stocks closed down on the week after tariff headlines recaptured attention of the markets. The latest development was seen in a Truth Social post from President Trump on Friday, threatening 50% tariffs against the European Union and 25% against Apple (AAPL). Nvidia (NVDA) CEO Jensen Huang also critiqued Trump's trade policies ahead of the company's highly-anticipated earnings. Alphabet (GOOGL) was the lone Mag 7 company to rally after launching its A.I. Mode for Google search. Marley Kayden takes investors through the market's biggest stories this week.