Peter P. Costa, Empire Executions president, explains what today's sell off means and if he will be buying the dip.

Discussing the action at the exchanges, with Peter P. Costa, Empire Executions president, and Jeff Grossman, BRG Brokerage president. The "Fast Money" traders provide perspective.

Peter P. Costa, Empire Executions president and CNBC contributor, discusses the significance of market milestones. Costa says it's scary when the retail investor gets back into the market.

Discussing the loss of health care for many Americans, with Jeffrey Kleintop, LPL Financial, and Edward Yardeni, Yardeni Research. Peter P. Costa, Empire Executions, weighs in on the market impact.

Jeffrey Kleintop, LPL Financial; Peter P. Costa, Empire Executions; and Edward Yarden, Yardeni Research, discuss comments from top CEO's and Wall Street investors at the DealBook conference in New York City.