It's a massive day on Wall Street as the Federal Reserve’s highly anticipated September interest rate decision has finally arrived. The central bank is expected to cut rates for the first time in four years as it eyes a soft landing for the US economy. However, the size of the Fed’s cut is still unclear as investors are torn between a cut of 25 and 50 basis points.

Meanwhile, the market is reacting to key legal battles. Alphabet’s Google (GOOG, GOOGL) has won its challenge to overturn the European Union’s $1.66 billion antitrust fine related to the tech giant's dominance on search. Elon Musk announced Tuesday that SpaceX will sue the Federal Aviation Administration (FAA) for “regulatory overreach.”

Yahoo Finance trending tickers include Roku (ROKU), Cassava Sciences (SAVA), and Plug Power (PLUG).

Key guests include:
9:00 a.m. ET - Bill Adams, Comerica Bank Chief Economist
9:30 a.m. ET - Keith Lerner, Truist Co-Chief Investment Officer & Chief Market Strategist
10:30 a.m. ET - Rafe Jadrosich, Bank of America Senior Equity Analyst - US Homebuilders and Building Products
10:45 a.m. ET - Paul Knopp, KPMG CEO
11:00 a.m. ET - Tony Zipparro, EquitySet CEO