According to Marketwatch, U.S. stock futures advanced modestly ahead of Tuesday's market open, as the Federal Reserve geared up to start a two-day meeting.

Among highlights on Tuesday, the Federal Reserve begins the first session of its two-day policy setting meeting. Most analysts expect the central bank to stand pat on its accommodative stance, given recent weak economic data and the government shutdown and debt-ceiling battle earlier in the month.

In September, market participants expected the policy makers to start scaling back the $85-billion-a-month asset-purchase program, but the central bank surprised by waiting for more evidence of an economic recovery before pulling the tapering trigger.