Eileen Burbidge, partner at Passion Capital, says Twitter's current user activity isn't enough, but it's a very good tool for information.» Read More
Yossi Pollak, chief executive officer at Sight Diagnostics, explains how computer algorithms make blood testing more efficient.
David Wilson, director of metals research & strategy at Citi, says the "wedding season" is coming up and if there's no pickup in gold demand from this, expect further downside.
John Zhu, Greater China economist at HSBC, says it will take time for China's stimulus measures to be felt.
Tsuneo Kita, Chairman of Nikkei, says the Financial Times has won trust of global readers and the Nikkei wants to help boost that brand.
CNBC's Catherine Boyle says it would be hard for Pearson Group to turn down such an offer from Nikkei on the FT Group.
Ravin Gandhi, CEO and co-founder of GMM Nonstick Coatings and YPO member, discusses how market volatility in China is impacting his business.
Can Visa beat earnings expectations? Kevin McVeigh, managing director at Macquarie Group, weighs in.
Darren Ruane, head of fixed interest at Investec Wealth & Investment, says investors will be looking at the next interest rate hikes and how they will impact markets.
Israel's government spends around half a billion dollars annually on research and development. Avi Hasson, Israel's chief scientist, discusses.
Simon Quijano-Evans, head of EM research at Commerzbank, says all emerging central banks are focusing on the U.S. Federal Reserve's meeting in September.
Richard Jeffrey, chief investment officer at Cazenove Capital, discusses the earnings season so far, and what's causing the mixed results.
Despite Microsoft posting a record Q4 loss, Jay Vleeschhouwer, managing director of software research at Griffin Securities, explains why it's not disastrous.
Anil Doradla, technology, media, and communications analyst at William Blair & Co., says Samsung is going from "weak to weaker", while Apple has a "unique product portfolio."
Jon Fredrik Baksaas, CEO of Telenor, discusses its Q2 earnings, competition and Telenor's future successor.
Gilad Glick, CEO of Itamar Medical, explains how his home-test product is trying to cure sleep disorder and heart problems.
John Wraith, head of U.K. rates strategy at UBS, explains why it's likely some members may lean towards voting for a Bank of England rate hike soon.
Cyrus Mewawalla, managing director at CM Research, says Apple is a buying opportunity, despite not delivering a blowout quarter.
Andrew Burkly, managing director and head of institutional portfolio strategy at Oppenheimer & Co., discusses the U.S. earnings season.
Lynnden Branigan, technical strategist at Barclays, gives a technical overview on gold and how far it may fall.
Antonio Llarden, executive chairman at Enagas, discusses the company's earnings and the main drivers behind them.
Carolin Roth is co-anchor for Worldwide Exchange and based in London. Fluent in both German and English, she was previously CNBC's correspondent in Zurich.
Wilfred Frost is co-anchor for Worldwide Exchange, joining CNBC in 2014.
Seema Mody is co-anchor for Worldwide Exchange, having joined CNBC in July 2011 as a reporter focusing on market-moving stories that impact Wall Street.