The OPAS user interface may be freely accessed from this page using:

The demo interface is meant for professional and expert level institutional investors. It is NOT meant for individual investors. If you fall into the latter category, please look at information on our project to support individual small investors or directly access the Stock Balancing System in Beta release.

There is no guarantee that the back end OPAS engine can be launched successfully from the demo interface.

The demo interface accessed from here is without warranty.

To understand the interface – you may want to consult the manual.