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European Investment Team

Gijs Koning

COO - Europe

Gijs Koning
  • Portfolio Management, Product Development, Tax and Accounting
  • Founded Think ETF's together with Martijn Rozemuller
  • Think ETF's was acquired by VanEck in 2018 and has been rebranded and fully integrated into VanEck in November 2019
  • Prior to joining was a Partner at trading company Optiver and worked at Kempen
  • Master's Degree in Financial Economics
Gijs Koning

Aaron Renkers, CFA

Head of Investments

Aaron Renkers, CFA
  • Responsible for development and management of index replication and optimization strategies for Equity and Fixed Income ETFs
  • Joined Think ETF's, now part of VanEck, in 2013
  • Master's Business Economics, Finance at University of Amsterdam
Aaron Renkers, CFA

Ernst Lowensteijn

Portfolio Manager

Ernst Lowensteijn
  • Responsible for management of index replication strategies, trading and researching portfolio performance for Equity and Fixed Income ETFs
  • Joined Think ETF's, now part of VanEck, in 2015
  • Master Financial Economics Erasmus, University Rotterdam
  • Bachelor Economics and Business, VU University Amsterdam
Ernst Lowensteijn

Floor Klarenbeek

Manager – Investments & Capital Markets

Floor Klarenbeek
  • Responsible for trade execution and settlement, portfolio performance and other portfolio management tasks for Equity and Fixed Income ETFs
  • Joined Think ETF's, now part of VanEck, in 2016
  • Prior to joining was a Sales Representative at Binckbank
  • Bachelor Business Economics, Utrecht University of Applied Sciences
Floor Klarenbeek

Vivian Simonis

Portfolio Manager

Vivian Simonis
  • Responsible for management of index replication strategies, trading and researching portfolio performance for Equity and Fixed income ETFs
  • Joined VanEck in 2018
  • Master's Finance & Investments, Erasmus University Rotterdam
  • Master's European Business Law, Radboud University Nijmegen
Vivian Simonis

Rob Uelderink

Junior Portfolio Manager

Rob Uelderink
  • Working on trade execution and settlement, portfolio performance and other portfolio management tasks for Equity and Fixed Income ETFs
  • Joined VanEck in 2020
  • Master of Science in Financial Economics, Erasmus University Rotterdam
  • Bachelor in Liberal Arts & Sciences, double major in Economics & Business, Erasmus University Rotterdam
Rob Uelderink

Hjalti Stefansson

Junior Portfolio Manager

Hjalti Stefansson
  • Responsible for management of index replication strategies, trading and researching portfolio performance for Equity and Fixed income ETFs
  • Joined VanEck in 2021
  • Master of Science in Financial Economics, Erasmus University Rotterdam
  • Bachelor of Science in Economics and Business, University of Amsterdam
Hjalti Stefansson