Airtime: ET
The markets have become so complex and so technical now, Karen Olney from Merrill Lynch said, calling for further regulation. Nick Carn from Odey Asset Management called the VW short-selling situation a "market failure".
A look ahead to the stories likely to make headlines next week, with CNBC's Michelle Caruso-Cabrera.
CNBC's Mary Thompson reports on the trading day from the NYSE.
A roundup of the week's business and financial news, with CNBC's Michelle Caruso-Cabrera.