EN
The author refers to the defi nition of homo pecuniosus set by prof. Janina Filek and analyzes the scope of it in the context of business ethics. As a practitioner, he gives several examples taken from the real life of derivatives trading with different consequences of ethical or non-ethical behaviour. The final conclusion is that not only so called financiers, but all of us are homo pecuniosus and it may be a valuable concept when treated in a long-term sense.