Much of the movement of the S&P 500 stock index is driven by just seven stocks. Known as the “Magnificent Seven,” they comprise Nvidia, Apple, Microsoft, Amazon, Meta, Alphabet, and Tesla, and are valued at around $20 trillion. Is this a bubble ready to burst? An overvaluation? Or something else entirely? But before we get to that story, we'll learn more about the first court hearing in a case that tests the Federal Reserve's independence.