We model and map the relevant uncertainties in order to help you monitor your goals and decisions. Founded by leading experts in the fields of Econometrics and Technology, we have in 35 years achieved an outstanding reputation, built on reliability. With over 600 clients in 20+ countries, we play a vital role in helping our clients improve investment decision making and managing uncertainty.

Headquartered in Rotterdam, The Netherlands, we also have offices in Amsterdam, London, Toronto, Zurich, New York and Melbourne. Some key facts:

  • 20+ countries represented
  • 600+ customers
  • 96% retention rate
  • 14 trillion euros in assets managed by our clients
  • 93.5% of surveyed clients are very satisfied with us

Models at our core

We design, build and deliver high-quality software models for asset-liability management, risk management, (impact investment) portfolio construction, performance measurement & attribution, and financial planning. Using the latest technology, data and market knowledge, we continuously find new ways, in collaboration with our global clients, to face the growing complexity of investment decision making.

Discover our solutions

Our vision

We deeply believe that our models improve decision-making. Models combined with technology provide easy access to complex knowledge, based on vast amounts of data and experiences. Models based on profound market knowledge and used in a proper way contribute to consistency, transparency, and efficiency. They can thereby help people to become more successful in achieving their objectives.

Mission statement

It is our mission to enable people - from the professional at a large institutional investor to the private investor saving for personal goals - to manage the complexity of investment decision making. We do this by delivering leading technologies and solutions based on the latest scientific insights.

How we work

With proven models and a holistic & data-driven approach, we enable our clients to make better investment decisions. No matter what we have achieved, we always strive to do better. We continuously improve our models, our solutions, and our way of working. This continuous innovation helps us to remain relevant for our clients by keeping up with market developments but also by anticipating trends and opportunities emerging from new technology, legislation, and regulation.

Learn about how we work

Executive team

This skilled group of professionals is responsible for our strategic direction.

Ton van Welie

Chief Executive Officer

Martijn Vos

Chief Operating Officer

Milan Seijbel

Chief Technology Officer

Godert Burghard

Chief Commercial Officer

Meet our employees

We employ some of the keenest minds in the industry. They passionately contribute to our vision and mission. They are independent and reliable. They avoid conflicts of interest and go out of their way to deliver what is promised.

Get to know them


Client Stories & Our Partners

We work for -and with- the best in the world, market leaders in the field of pensions, sovereign and private wealth, insurance, and asset management. Municipalities and housing associations also form an essential part of our customer base. What they have in common? They all want to be sure their investment decisions have a solid, substantiated, and reliable foundation. Please read some of their stories here.

Client stories

Our Partners


Impact on society

Our ultimate goal is to enable as many people as possible to make their own investment decisions and improve their ability to reach their objectives. These objectives are not just financial targets but can have e.g., environmental and social components as well. In addition, we provide insights and technology to society as a whole and integrate sustainability into the decision making of our clients.  

Learn about our climate solutions

Ortec Finance ESG statement

Let’s keep this going

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