THETA is revolutionising trading in capital markets, and now also in carbon markets. Based in London, THETA provides next-generation trading solutions through its innovative, cloud-native SaaS and infrastructure services, in partnership with Microsoft Azure. Built by industry experts, THETA’s Apollo platform is a marketplace super aggregator that transforms trading for the digital age, empowering traders with a modern, seamless web-native digital user experience and a flexible, responsive, and intuitive way to trade smarter, from anywhere.

By pivoting towards the thriving carbon markets in response to demand, THETA draws upon the successes and lessons learned from the electrification and efficiency of capital markets trading. THETA accelerates the carbon markets revolution, leveraging unparalleled capital markets expertise to turbocharge liquidity, streamline standardisation, and deploy cutting-edge technology infrastructure – delivering a game-changing, greener, and optimised trading experience for clients seeking a sustainable future.


Abdullah Hiyatt


Business technology executive leader with a track record of driving strategic change in complex and challenging initiatives. Abdullah has 25 years’ experience in capital markets trading technology and digital transformation, and a background in strategy and management consulting. He has worked with leading investment banks, asset and wealth managers, exchanges and B2B FinTechs on a global scale.

Paul Wallace

Head of Product

25 years experience in Fixed Income and Foreign Exchange Trading. Prior to joining THETA, Paul was Head of Fixed Income Trading at Aviva Investors.

Before that, Paul held senior trading roles for Hermes, BGC Partners and Barclays Global Investors amongst others covering Fixed Income and FX cash and derivatives traded products.


Peter Meddemann

Strategic Advisor

30 years’ experience in capital markets technology delivering and managing trading solutions operating as CTO and technology leadership roles at Bloomberg, Thomson Financial. GL Trade, City Index and most recent Kore Labs.

George O'krepkie

Strategic Advisor

20 years funded, helped build and sold successful FinTech platforms in the market today. Most recently, George was Chairman and CEO of AX Trading Group. He sold to the London Stock Exchange, and Trading Edge to MarketAxess. Prior to that he held senior trading roles at Lehman Brothers, and Merrill Lynch.