Stocks could spend another day in a holding pattern Tuesday with little corporate or economic news to swing sentiment either way.

U.S. stock futures were little changed, with the Nasdaq and Dow rising slightly but the S&P futures little changed.

After this year's strong gains, the next big catalyst for investors is likely to be the Federal Reserve meeting later this month, when it will decide whether to continue pumping money into the economy at its current rate of $85 billion a month.

Gun maker Smith & Wesson (SWHC) is scheduled to release quarterly results after the closing bell.

Related: Fear & Greed Index, still greedy

U.S. stocks finished slightly higher Monday.

General Motors (GM) shares rose in premarket trading. The U.S. government revealed Monday that it had sold the last of its stake in the automaker.

European markets were mixed in midday trading. Asian markets ended the day narrowly weaker.