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Sherry Chris, CEO, Better Homes and Gardens Real Estate, told CNBC, "There certainly is a lot of optimism out there, when we look at the market itself we have had nine straight months of month over month increase, we have had the strongest first quarter since 2005, so those are good indicators of a bottoming out of the market."

Ruth Lea, economic advisor, Arbuthnot Banking Group, told CNBC, "The outlook looks reasonably benign on inflation; the pound is a bit stronger, if there is a real crisis in the euro zone and the capital markets look as thick as they did last October I reckon they will go for more QE."

David Murrin, CIO, Emergent Asset Management, told CNBC "Market wise I think we are oversold, I think we really pushed ourselves into this boot of huge pessimism and there will be some kind of relief rally over the next month."

Tim Jenkinson, professor for finance at Said Business School (Oxford), told CNBC, "Everyone is realizing that they have squeezed most of the juice out of this IPO and one of the big issues is what will happen today...once you start replacing the idea that this could go to a big increase the real issue is fear that this could really collapse."

Chad P Bown, senior economist at World Bank Development Research Group, told CNBC, "Typically during recessions you do see this rise in protectionism and it is mainly driven by three factors one is domestic unemployment increasing, sharply appreciating exchange rates and targeting new trade barriers against countries that are shrinking."

Philippe Espinasse, former investment banker and author of IPO: A Global Guide, told CNBC, "It is an interesting transaction obviously the deal size could be quite large more than a billion US dollars but what is interesting is that the lead banks have built in quite a bit of flexibility, the deal size could vary and the price range is very wide."

Bridget Gandy, managing director of financial institutions at Fitch Ratings, told CNBC, "There has been a lot of alarmist reporting in the media about what is actually happening and the more the media reports on that the more likely there is that people are going to go to banks and take deposits out."

"The one thing I say about Spain is, the market wants closure. You are dealing with a battle between bond yields and the market, and politicians," Larry McDonald, senior director of credit sales and trading at Newedge, told CNBC.

"Greece has its back against the wall with nowhere to go. Austerity is too hard to be socially acceptable," Domenico Crapanzano, head of European rates sales and trading at Jefferies, told CNBC.

Eisuke Sakakibara, Former vice finance minister, Japan, told CNBC, "It is true that Japan has a very high debt ratio however you have to look at the balance sheets, household financial assets are about 240 percent of the GDP which far exceed the government debt of 180 percent of GDP, so we won't have a financial crisis for several years."

David Bloom, global head of Foreign Exchange Strategy at HSBC, told CNBC, "The kind of Armageddon scenario where the euro won't exist has disappeared from the market, people are talking about Greece leaving but I don't think people are talking about the disintegration of the euro and that is a big change compared to a year ago."

Gerry Wang, CEO of Seaspan Corp, told CNBC, "We are in the most boring part of the shipping business, when times are good our charters are making tons of money when times are bad we go through a bit of a hard time, our business model is such that has long-term sustainable cash flow derived from long-term contracts."