About XENIX

XENIX was founded in 2009 by Dr. Markus Thomas in Berlin. Markus holds a degree in economics, a doctorate in history and is one of Germany's most respected ETF specialists. He has worked for fund companies and index providers before founding XENIX. In addition to the owner, the core team of XENIX since the start also includes Wieland Thyssen (for strategy and ETF DAYS) and Susanne Tilschner (for marketing and events). XENIX is 100% independent and owner-managed. In addition, we are supported by external employees or experts on a project basis.

15+

Years in the ETF service business

100

Percent independence

2652

ETFs qualitatively assessed

Our know-how

We have focused primarily on rating services for ETFs since 2019. XENIX is the only provider of qualitative ETF ratings in Europe - as opposed to quantitative ratings. With a rating scale of one to five XENIX STARS, we currently qualitatively evaluate more than 2,500 ETFs. Additionally we offer:

  • Valuations for traditional index funds and crypto basket trackers,
  • an ESG ETF classification service (screener) for sustainable ETFs. This service is offered since 2022 used by gettex exchange ' gettex.com/etfs > sustainable ETFs and
  • Xenixfolio strategies, these are rule-based asset strategies with exclusively excellent rated ETFs.

We use multi-dimensional analysis to identify the best quality ETFs in each asset class and investment segment. The XENIX STARS valuation system supports investors and intermediaries in compiling high-quality and efficient portfolios.

Services around the world of ETFs

We have focused primarily on rating services for ETFs since 2019. XENIX is the only provider of qualitative ETF ratings in Europe - in contrast to various quantitative ratings. With a rating scale of one to five XENIX STARS, we qualitatively evaluate currently more than 2500 ETFs. In addition, we offer valuations for traditional index funds and crypto basket trackers.Our goal is to use multidimensional analysis to identify the best quality ETFs in each asset class and investment segment. With the help of XENIX STARS, institutional investors and intermediaries can build higher quality and more efficient portfolios.

Our other ETF services are:

  • the ESG ETF classification service or screener for sustainable ETFs, which has been used publicly by the gettex exchange since the fall of 2022 at gettex.de/etfs > sustainable-ETFs
  • the Xenixfolio strategies, which use only excellent ETFs for a rules-based asset strategy.

These ETF portfolio strategies can be calculated externally. For this purpose, we are working exclusively with the specialist Sandro Conte on a project basis, so that these rule-based strategies could also be used for investment products in the future.

Our services at a glance

Want to learn more about our ETF services? You can find our entire range of services here:


ETF Ratings

Sustainable ETFs

ETF portfolios

Advisory & Coaching

ETF Portfolio Certification

The XENIX Team

Dr. Markus Thomas, Gründer und Geschäftsführer von XENIX

Dr. Markus Thomas (Owner and Managing Director)

Susanne Tilschner (Marketing and Events)

Wieland Thyssen (Strategy and ETF DAYS)

XENIX mainly accompanies asset managing limited liability companies and their owners (so-called wealth offices). However, we also attach importance to private investors taking on investing with ETFs on their own responsibility. "Investing Successfully and Sustainably with ETFs!" is the second financial book by Dr. Markus Thomas after the "ETF Investor Book" of 2020. It will be published in late fall 2023 (ISBN 978-3-9822290-7-2). The book can be ordered free of charge by e-mail here.

Invest successfully and sustainably with ETFs!

This guide is aimed at beginners, experienced ETF investors, but also wealth professionals who want to use ETFs to efficiently manage their retirement savings. The book is aimed at investors who invest rationally in markets and not just in individual bonds or shares in order to make self-determined provisions for the future. The basics of ETF investing are taught in a practice-oriented manner - expanded to include the important aspect of ESG ETFs. In addition, investors receive up-to-date information on all categories of bond ETFs in view of the interest rate turnaround and inflation wave.