Per Loven, head of International corporate strategy at Liquidnet Europe, makes the case for Dark Pools and why they are important.

Karen Cho takes you through the European market open, with stocks sliding into negative territory.

Larry Summers, former US Treasury Secretary, tells CNBC's Bernie Lo that it should be 'unthinkable' for the US to default on its debt.

Carl Weinberg, chief economist at High Frequency Economics, tells CNBC that people in the high-end retail market have done very well.

Joris Luyendijk, anthropologist and journalist at the Guardian discusses the social behavior of bankers and suggests that they are a form of 'tribe' and bonuses are the 'totem pole they dance around'.

Christine Short, global markets intelligence senior manager at S&P Capital IQ, tells CNBC that the financial sector will be one of the growth leaders when fourth quarter reports are released this week.

Miranda Carr, head of China research at NSBO, tells CNBC how a drive in China to attract foreign investors has combined with an uptick in its economy to boost markets.

Steve Allan, M&A practice leader for EMEA at Towers Watson, tells CNBC that a lack of confidence amongst companies means that M&A is unlikely to pick up in the short-term.

Daniele Antonucci, European economist at Morgan Stanley, tells CNBC that Italy is going through a 'political cliff' and that the higher chamber is the place to watch.

Scott Evans, head of equity sales at Espirito Santo, tells CNBC why the flight to security in bonds may be starting to change.

Lucinda Guthrie, editor at DealReporter, tells CNBC that the M&A market is picking up following the fiscal cliff negotiations but there are a lot of hurdles still spooking buyers.

Chris Gadd, grains analyst at Macquarie Group, tells CNBC that short-term there will be a very tight supply in the corn market but it will get looser when the new crop comes through.

Vittorio Grilli, Italy's finance minister speaks to CNBC's Bernie Lo about how the country has justified its low borrowing costs.

Lou Jiwei, chairman and CEO of China Investment Corporation (CIC) speaks exclusively to CNBC's Bernie Lo about the funds strategy in 2012 and where they plan to invest next.

The divisions in Venezuela have become deeper over the years and most recently as Chavez's health deteriorates, Jimena Blanco, Senior Latin America analyst at Maplecroft. told CNBC.

Corn is the key commodity to watch in Friday's USDA report, Sudakshina Unnikrishnan, Commodities analyst, Barclays, told CNBC.

Tina Fordham, Senior Political Analyst at Citi discusses the challenges facing the Obama administration with CNBC.

The U.K.'s economy is struggling to make a meaningful recovery, Neil MacKinnon, Chief Economist, VTB Capital, told CNBC.

One hundred businesses are starting up every week, thanks to UK government's "Start-Up Loans Initiative," James Caan, CEO, Hamilton Bradshaw Private Equity,Hamilton Bradshaw, told CNBC.

The "Funding for Lending" scheme will be "moderately successful" in improving the price and availability of credit, Kevin Daly, Managing Director of Global Investment Research at Goldman Sachs, told CNBC.