President Obama is at Wall Street today to speak from Federal Hall to mark one year after the collapse of Lehman Brothers and to breathe new life into efforts to overhaul the financial regulatory system.

Obama will try to retake the initiative, capping other recent efforts in which top government officials have emphasized improvements in the economy and made the case anew for rewriting the nation's financial rulebook.

He will urge members of the financial community to take responsibility, not only to support reforming the regulatory system but also to avoid a return to the practices on Wall Street that led us to the financial crisis, an administration official said Sunday.

Click here to watch the live stream here.

Listen to the live stream from Obama on Wall Street below: