5 things to know before the stock market opens Wednesday, September 18 [Video]

Here are five key things investors need to know to start the trading day:

1. Ready for Fed

The S&P 500 ended Tuesday little changed as traders await the Federal Reserve’s key interest rate cut decision (more on that below). The broad-market index touched a record high earlier in trading and ended the day off the mark at just 0.03% higher. The Dow Jones Industrial Average inched down 15.9 points, or 0.04%, after also hitting a fresh record during the session. The Nasdaq Composite added 0.2% for the day. The record highs for the S&P 500 and the Dow come during a historically tough period for the market, as September has been the worst month for the benchmark over the past 10 years, according to FactSet data. Follow live market updates.