Here comes Janet Yellen ...
Yellen will be at the Commonwealth Club in San Francisco.
Her speech comes to markets ahead of the main highlight of this week, which is President-elect Donald Trump's inauguration and speech on Friday.
The president-elect gave few updates on his fiscal policy and infrastructure plans during a press conference last week, and any guidance on the economy will be parsed by market participants come Friday.
Minutes of the Fed's most recent policy meeting in December showed that they are closely monitoring how fiscal stimulus would impact economic growth and interest-rate decisions.
Almost all members of the Federal Open Markets Committee (FOMC) "indicated that the upside risks to their forecasts for economic growth had increased as a result of prospects for more expansionary fiscal policies in coming years," the minutes said.
Bond were lower ahead of Yellen's speech, with the two-year yield - sensitive to interest-rate expectations - up three basis points to 1.189% at 2:43 p.m.