Our professionals


Steffen is a founding partner of Fideres with over 21 years’ experience in structured products and complex derivatives across all major asset classes. Steffen is responsible for the quantitative analysis of consulting mandates and has handled various complex benchmark manipulation cases, including LIBOR and ISDAfix, and cases relating to the mis-selling of structured product and derivatives. Prior to founding Fideres, he held a senior position at The Royal Bank of Scotland were he moved to after working for 5 years at Deutsche Bank. Steffen holds a master-level degree in Mathematics from the University of Erlangen, the Certificate of Advanced Studies in Mathematics (Part III) from the University of Cambridge and an MSc in Financial Engineering and Quantitative Analysis from the ICMA Centre at the University of Reading.


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Treasury Securities Auction Antitrust Litigation, 1:15-md-02673

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Australian Securities and Investments Commission v. Australia and New Zealand Banking Group Limited, VID197/2016

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The Royal Bank of Scotland Securities Litigation, [ 2014] EWHC 227 (Ch)

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Tesla Inc. Securities Litigation, 3:18-cv-04865 

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Steinhoff Securities Litigation

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Danske Bank Securities Litigation

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Wirecard Securities Litigation, 1542 IN 1308/20

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Tesco Securities Litigation, FL-2020-000029

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Barclays Plc Securities Litigation, FL-2020-000051

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Deutsche Telekom AG Securities Litigation, 151220BXIZB24.16.0


Mar 2009 – to date
Fideres Partners LLP, Founding Partner

Feb 2006 – Feb 2009
The Royal Bank of Scotland Plc, London, GBM / Fixed Income, Director

Sep 2001 – Feb 2006
Deutsche Bank AG, Frankfurt and London, Global Markets: Assistant Vice President


2000 – 2001, ISMA Centre, The University of Reading, MSc Financial Engineering and Quantitative Analysis
1997 – 2000, Universität Erlangen-Nürnberg, Germany – Diplom Mathematik (MSc level degree)
1996 – 1997, University of Cambridge, Certificate of Advanced Studies in Mathematics (Part III Math)