1990. Foundation

STEM founded, the first Czech private sociological research company with its own interviewers’ network. In March 1990 STEM carried out the first public opinion survey of the Czech population. Simultaneously, STEM took part in various international projects.

1993. Regular surveys launched

One of our major tools is TRENDS, a unique monthly series of surveys that was launched in May 1993 and which is run on large representative samples of the population aged 18+. Since then, TRENDS has been continuously monitoring the dynamics of social change within Czech society.

1994. Foundation of STEM/MARK

Sister company focused on marketing, consumer attitudes, and media research is founded.

2015. Foundation of STEM Institute

Driven by the ambition to share the unique data, Jan Hartl, STEM’s owner, launched an endowment to establish a public institute. STEM Institute was founded in November 2015 to open the private database to the public in order to stimulate debate on key issues. STEM Institute extends its know-how into new areas, employing the unique set of long term empirical data, developing TRENDS and other programs, and cooperating with a wide range of nonprofit organizations.

All three members of the board, Jindrich Sidlo, a prominent journalist at the daily Seznam Zpravy, Petr Vaclavik, sociologist and long-standing associate of STEM, and Jan Hartl share the same vision. Pavel Fischer, diplomat and former political advisor to President Havel, in his capacity of the Director of the Institute, ensured that the mission met its goals.

We are firmly convinced that our data, gathered from over 20 years of surveys, unique within the Czech context, has the potential to frame and drive public debate, foster education, and inspire political discourse – in short, to influence the future of our country.


STEM Institute Chlumčanského 497/5, 180 00 Praha 8.

Tel: (+420) 225 986 848, Fax: 246 013 860, Cell: 602 231 560

Pavel Fischer, Director (pavel.fischer@stem.cz)

Jan Hartl, Founder (jan.hartl@stem.cz)