Monday's choppy market action ended with stocks continuing last week's rally. President Trump's decision to dial back tech tariffs helped bring in positive trading action, with Apple (AAPL) expected to be a big beneficiary of the development, Nvidia (NVDA) showed its support for the U.S. by saying it will invest $500 billion in domestic A.I. production. However, Goldman Sachs (GS) shared tariff concerns through its earnings. Caroline Woods turns to the biggest stories of the session.