Massarius is a Publisher Trading Desk; we facilitate the automated sales of online advertising space for publishers. The advertising space is sold to media agencies and advertisers. The company consists of ‘yield managers’, analysts who are busy with assisting publishers and media agencies with a professional network, knowledge, display sales, inventory and proposition management.

Top 250 Scale-ups

The Top 250 Scale-ups 2019 (Top 250 Groeibedrijven 2019) is based on our ScaleUp Dashboard, which is an annual research into Dutch scale-ups conducted by our Academic Director and Professor Corporate Entrepreneurship at the Rotterdam School of Management (RSM) Prof. dr. Justin Jansen. 2019 is the third year that the Top 250 Scale-ups (Top 250 Groeibedrijven) is published and it is presented together with nlgroeit.