Both the S&P 500 and Nasdaq Composite hit record closing highs on Friday, surpassing previous highs reached in February and December, respectively. There are a few things that could push this rally further, but there are also risks that investors should be aware of.

U.S. stock futures are little changed as investors digest new tariffs on copper and imports from Brazil, while Nvidia and Microsoft shares are in focus after both closed at record highs. Here's what investors need to know today.

Wall Street looked to keep momentum from a tech-fueled rally that saw Nvidia leap to become the world's first $4 trillion public company.