Management Boards

Chief Executive Officer (CEO) of Eurex Clearing AG

Erik Tim Müller, CEO of Eurex Clearing AG, has over 20 years of experience in Capital Markets and is a member of the Executive Board of Eurex Clearing AG since April 2013. He is also a member of the Management Board of Eurex Deutschland, represents Eurex on the CFTC Global Markets Advisory Committee and serves on the Board of Directors of the International Swaps and Derivatives Association (ISDA).

As Managing Director of Deutsche Börse Group, he has been previously responsible for Corporate Strategy and Mergers & Acquisitions (M&A) for many years. Since the IPO of Deutsche Börse in 2001, Müller has been a manager of Deutsche Börse Group. He has been responsible for Group Treasury and Investor Relations, including all treasury activities of two bank licensed businesses of Deutsche Börse Group, Eurex Clearing in Frankfurt/Main and Clearstream in Luxembourg since 2008.

Müller holds a dual degree MBA from Goethe University in Frankfurt/Main, Germany and the Fuqua Business School in North Carolina, USA.

Global Head of Fixed Income, Funding & Financing Strategy and Development of Deutsche Börse AG and Member of the Executive Board of Eurex Clearing AG

Matthias Graulich took responsibility for Fixed Income, Funding & Financing Strategy and Development of Deutsche Börse AG in September 2018 and is a Member of the Executive Board of Eurex Clearing AG since August 2014.

In his Strategy and Development role within Deutsche Börse Group, he is in charge  of Strategy, Business and Product Development for listed and OTC derivatives as well as repo and securities lending across trading and clearing.

From March 2016 until August 2018 he was in charge of Cross Market Strategy leading the strategy for Eurex Clearing and Clearstream. From April 2013 until February 2016 he established and developed as Chief Client Officer and Global Head of Clients & Markets a dedicated client facing organizational unit of Eurex Clearing. Before that he took responsibility as Head of Clearing Initiatives for the implementation of Eurex Clearing’s strategic project portfolio and regulatory affairs. Since joining the Deutsche Börse Group in 2001, he has held a number of leadership and project management positions at Deutsche Börse and Eurex for various strategic projects, amongst others, the introduction of EurexOTC Clear as well as the merger and integration of the International Securities Exchange.

Graulich holds a Master of Business Administration degree from the Fuqua School of Business at Duke University in North Carolina.

Member of the Executive Board of Eurex Clearing AG

Manfred Matusza has more than 22 years of experience in the capital markets industry. Since July 2014 he heads the area Clearing & Risk IT, since April 2014 he is Chief Technology Officer of Eurex Clearing AG. He is responsible for the maintenance and further development of the IT systems and the IT strategy of the clearinghouse. He joined Deutsche Börse Group in April 2004 and held leading and project management positions at Deutsche Börse and Eurex Clearing. From November 1993 to March 2004 Matusza worked as consultant for Accenture and was involved in the further development of the IT systems of Deutsche Terminbörse, of the trading system Xetra and the development of the CCP system for clearing of cash and bond markets. He holds a diploma in Business Administration from Eberhard-Karls-Universität Tübingen.

Member of the Executive Board of Eurex Clearing AG

Dmitrij Senko is Chief Risk Officer of Eurex Clearing AG and has been a member of the Executive Board since July 2019. 

Senko joined Eurex Clearing in 2010 and since then he has played an important role in developing the Risk Management department. He was one of the main architects of Eurex Clearing’s industry-leading risk engine Prisma back in 2011–2012, and he led the Risk stream in the Eurex Clearing EMIR authorisation project in 2013. Senko has been part of the project team building up the clearing house in Singapore since 2014 and held the role of Chief Risk Officer of Eurex Asia from July 2015 until February 2018. From 2013, Senko was Head of Risk Analytics and Model Validation in the Risk Department of Eurex Clearing. 

Prior to joining Eurex Clearing, Senko worked for Accenture Management Consulting in different roles supporting clients in the banking industry on a range of topics in risk management, regulation and technology. He holds an Executive MBA degree from the London Business School and a PhD in physical-mathematical science from Belarus State University.

Member of the Executive Board of Eurex Clearing AG

Jens Janka is the Chief Operating Officer of Eurex Clearing AG and has been a Member of the Executive Board of Eurex Clearing AG since July 2020.

Janka joined Deutsche Börse Group in April 2002 where he held a number of different leadership positions within Clearstream and Eurex Clearing. In his prior role as Director at Eurex Clearing, Janka was responsible for Clearing Operations and Clearing Delivery & Control, where he ensured the daily operations of the clearing house as well as the implementation of new products and functionalities into our processes and procedures. In 2018, he implemented a global follow-the-sun operations organization for Eurex Clearing across three different locations in support of extended trading hours. Jankas' focus is on automation and digitization of processes. Janka holds a graduate degree in Business Administration with major in business information systems from Verwaltungs- und Wirtschafts-Akademie Wiesbaden e.V., Germany.

Chairman of the Supervisory Board of Eurex Clearing AG

Jeffrey Tessler was appointed as member and Vice Chairman of the Supervisory Board of Eurex Frankfurt AG in April 2016. At the same time, Mr Tessler also joined the Supervisory Board of Eurex Clearing AG. He has been Chairman of both boards since June 2018.

From 2004 to 2018, Jeffrey Tessler was a Member of the Executive Board of Deutsche Börse AG. He was responsible for the Clearstream Division until 2015 and headed Clients, Products & Core Markets as of 2016. After having served as Chief Executive Officer of Clearstream Banking S.A. and Clearstream International S.A. since 2004, Mr Tessler became Chairman of the Supervisory Boards of Clearstream in 2015. Since April 2016 Mr Tessler is a member of the Supervisory Board of China Europe International Exchange AG (CEINEX) and became Vice Chairman in June 2018.

Jeffrey Tessler joined Deutsche Börse Group following a 25-year career with The Bank of New York Company, Inc., where he held a number of key management positions in the US and Europe. Most recently, he served as Executive Vice President of BNY Securities Group, the company's global agency brokerage, clearing and financial services outsourcing business. He served as General Manager of The Bank of New York in Europe from 1998 to 2003, a period in which the company achieved a leadership position in providing securities services to European clients. Tessler also served as Head of The Bank of New York's Securities Industry Banking Division from 1988 to 1998.

Jeffrey Tessler began his career in 1979 at the Irving Trust Company, which merged with The Bank of New York in 1988. His experience includes roles as money market trader and dealer in U.S. government bonds.

He holds a BA in Political Science and an MBA from Seton Hall University, New Jersey.

Vice-Chairman of the Supervisory Board of Eurex Clearing AG

Gregor Pottmeyer is Chief Financial Officer and member of the Executive Board of Deutsche Börse AG since 2009. In this role, he oversees the Group’s financial accounting & controlling, tax, and risk management, as well as investor relations, treasury, and purchasing & facility management.

Prior to joining Deutsche Börse AG, he spent 22 years in finance roles of increasing responsibility at Daimler AG.

From 2002 to 2009, he served as a Board member at Mercedes-Benz Bank AG, a unit within Daimler’s financial services division. He was responsible for Finance and Risk Management, as well as for Finance/Controlling for the big European financial services companies and for Credit Operations for the financial services companies in Europe, Africa and the Asia-Pacific. In the years 1993 to 2002, Gregor Pottmeyer held several positions at Mercedes-Benz Finanz GmbH, first joining the company as a Senior Project Manager and becoming then Managing Director Controlling/ Accounting. Between 1987 and 1993, he held different positions at Daimler Benz AG and debis AG in the Controlling area.

Gregor Pottmeyer holds a graduate degree in Business Administration from Saarland University in Saarbrücken, Germany.

Member of the Supervisory Board of Eurex Clearing AG

Tammo Diemer was educated at the University of Bonn, Germany and at the University of Warwick, UK. He holds a degree in mathematics and achieved a master of science. In 1999, he completed his PhD in mathematics at University of Bonn. Dr Diemer began his career as an asset liability manager at DePfa Deutsche Pfandbriefbank AG in Wiesbaden. From 2001 to 2013, he held various positions at Aareal Bank AG, Wiesbaden, Germany, lastly becoming managing director and head of treasury. Since 16 January 2013, Dr Diemer is a Member of the Executive Board of the Federal Republic of Germany – Finance Agency. On 01 July 2015 he was additionally appointed to the FMS Wertmanagement Supervisory Board.

Member of the Supervisory Board of Eurex Clearing AG

David Feldmann is Managing Director and Head of Markets in Germany, Austria and Switzerland at Deutsche Bank, based in Frankfurt. He joined the firm in 2007 in Structured Rates Sales and has since 2012 held managerial positions in Pensions & Insurance as well as Rates Sales. Since 2017 he heads Institutional Sales in the region, taking responsibility for the broader Markets businesses, encompassing additionally Fixed Income & Currencies Trading and Structuring, in 2019. He is a member of the Fixed Income & Currencies Global Executive Committee and the Management Committee Germany.

David Feldmann holds a master’s degree in Business Administration from WHU – Otto Beisheim School of Management, with additional studies at Universidad Adolfa Ibañez in Chile and Richard Ivey School of Business in Canada.

Member of the Supervisory Board of Eurex Clearing AG

Wim den Hartog is Managing Director at STX Group, a Broker Dealer in Corporate Bonds and Environmental Commodities in the Netherlands. He started his career in 1990 at Kas Bank in Amsterdam and Kas Clearing in London. In 1997, he became Managing Director at MeesPierson ICS in London. From 2003 to 2012, he was working for Goldman Sachs in London. In this time, he built and was Managing Director of the Execution and Clearing Business (GSEC) and of the European Futures Business.

Recently, he was Co-Head of IMC Financial Markets in Chicago. Wim den Hartog studied Business Economics at the Erasmus University in Rotterdam. 

Member of the Supervisory Board of Eurex Clearing AG

Tong Lee is Head of Fixed Income & Currencies and a member of Markets Executive Committee at UniCredit.  Tong joined UniCredit in 2009 where he was Head of Rates based in London and subsequently he relocated to Munich in 2014 to take on a double duty as Head of Markets Germany.  In 2017, he relocated to Milan to assume his current role.  Prior to UniCredit, Tong spent 5 years at Dresdner Kleinwort in London where he was Global Head of Structured Rates Derivatives and Commodities.  In that capacity, he was responsible for trading, structuring and quantitative development in structured rates derivatives and commodities, as well as hybrid products across asset classes.  Before Dresdner, Tong spent 12 years at General Re Financial Products in London and New York where he last served as Global Head of Trading across all asset classes.  He was also a member of Executive Committee and Risk Committee.  Prior to General Re, Tong was a senior interest rates options trader at BNP New York.  

Tong holds a Bachelor’s degree in Electrical Engineering and a Master’s degree in Management, both from the Massachusetts Institute of Technology.

Member of the Supervisory Board of Eurex Clearing AG

Clifford Lewis is currently an independent director at Eris Exchange, a futures exchange in the US, and a member of the Technology Advisory Committee of the CFTC as well as an advisor to Long Ridge Capital, a venture capital fund focused on financial sector IT. He was most recently an EVP and Head of e-Exchange at State Street as well as CEO of Currenex (State Street acquired Currenex in 2007).

Mr. Lewis has more than 30 years of global finance experience in both the public and private sectors. Private sector jobs include being a consulting Partner at KPMG responsible for international capital markets assignments and senior executive at the Chicago Board of Trade (CBOT). While at CBOT, he was responsible for e-trading including the successful transition of the bond complex from open outcry to automated trading. He was also responsible for the initial phases of the CBOT’s demutualization and worked extensively with Eurex during his time at CBOT.

His public service included senior positions at the World Bank Group with responsibilities for Latin America financial sector reforms as well as capital market development globally.  Among other achievements, Mr. Lewis was responsible for funding the development of new exchanges and clearinghouses including the BM&F in Brazil. During the Reagan and George H.W. Bush Administrations, he was a top official at USAID initially responsible for budget and policy planning and then heading the US Government's efforts to assist the newly free countries of Central and Eastern Europe.

Mr. Lewis is a frequent speaker at FX and derivatives industry events and has won numerous industry awards. He has testified before Congress and has bylined numerous articles in such publications as the Wall Street Journal, Atlantic Monthly, and National Interest. He is an honors graduate of Harvard College and former fellow of Harvard's Center for International Affairs.

Member of the Supervisory Board of Eurex Clearing AG

Member of the Supervisory Board of Eurex Clearing AG

Member of the Supervisory Board of Eurex Clearing AG