U.S. Markets closed

Here's where big oil companies feel the pain of lower crude prices: NYSE trader

Crude oil is now in its 6th bear market in 4 years. If the price falls further, what are the effects on the big global energy companies and the US shale oil companies? Yahoo Finance's Alexis Christoforous is joined by Keith Bliss of Cuttone and Company from the floor of the New York Stock Exchange to discuss.