Broadcom Stock Surges on AI-Driven Earnings Boost

The S&P 500 ended flat as investors focused on the upcoming Federal Reserve interest rate decision. Broadcom shares surged 24.4% to a record high, driven by strong AI sales, while Super Micro Computer's stock fell amid concerns of its potential removal from the Nasdaq 100. Other notable movements included Lamb Weston and Walgreens Boots Alliance shares rising on buyout talks, and Arista Networks gaining due to AI demand. Meanwhile, Nucor shares dropped following a downgrade by UBS.