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European shares opened sharply lower on Tuesday, tracking declines in global markets as oil prices continued to fall.
Jonathan Bell, chief investment officer at Stanhope Capital, says the slowdown in Chinese economic growth will be a "painful" but necessary adjustment.
The announcement of a Greek presidential election is a "good event" as people are fed up with austerity policies, left-wing Syriza lawmaker John Milios says.
Urs Rüegsegger, CEO of Six Group, says new financial regulation will see activity move from dark pools onto regulated platforms like exchanges.
Vladyslav Rashkovan, acting deputy governor of the National Bank of Ukraine, says economic activity in the east of Ukraine - which has been hard hit by the conflict with Russia - is picking up.
Vladyslav Rashkovan, acting deputy governor of the National Bank of Ukraine, says the country needs to make the right reforms to build a prosperous nation for the future.
Vladyslav Rashkovan, acting deputy governor of the National Bank of Ukraine, says the central bank needs to stop inflation getting "out of control" in the country.
OPEC is no longer a "viable entity" following its refusal to cut oil production, Dennis Gartman told CNBC.
Peter Elston, global investment strategist at Seneca Investment Managers, says that over the last 13 days, the Chinese stock market has rallied 29,000 percent on an annualized basis, but investors will see it "end in tears".
CNBC's Hadley Gamble discusses Israeli and Cypriot proposals to build a gas pipeline from the Levant Basin through to Cyprus and Greece. Could it change the dynamics of the EU's energy market?
Miranda Xafa, president of EF Consulting and former IMF board member, discusses why a snap presidential election in Greece has been called and what it could mean for the political landscape in the troubled euro zone country.
Chris Torrens, director of global risk analysis for Europe and Africa at Control Risks, runs through the biggest risks across the world in 2015 and says that governments will struggle to deal with them.
A big selloff in the Chinese stock market on Tuesday does not signal the top for the equities in the world's second-largest economy, according to Ben Collett, head of Japan and Asian equities at Sunrise.
Dennis Gartman, founder, editor and publisher of The Gartman Letter, says we've seen the end of OPEC as a "viable entity" as there is division among the cartel.
Tesco's woeful year continued on Tuesday after the U.K. supermarket issued another profit warning saying that it did not expect full year profit to exceed £1.4 billion ($2.2 billion).
Jim Phillips, CEO of Midatech, talks about the company's IPO and its nanoparticle technology which could help cure diseases such as cancer.
European shares opened mixed on Monday, shrugging off better-than-expected U.S. jobs data released last week.
Earnings will drive equity markets in 2015 despite higher volatility, according to Peter Sullivan, head of European equity strategy at HSBC.
European bonds are an attractive buy for investors, Francesco Filia, CEO and CIO of Fasanara Capital says.
Francesco Filia, CEO and CIO of Fasanara Capital, says the euro currency is "unsustainable" and will be "dismantled" in two or three years.
Cutmore anchors CNBC’s flagship "Squawk Box" in EMEA; the three-hour show bookends the opening of European equity markets.
Based in London, Tso co-anchors CNBC flagship show in EMEA, Squawk Box, a show that sets the news agenda every trading day.
Sedgwick co-anchors CNBC's flagship program "Squawk Box" (Europe) and is also CNBC's OPEC reporter covering major meetings.