The PX (until March 2006 the PX 50) is a major stock market index which tracks the performance of large companies listed in the Prague Stock Exchange, in Czech Republic. It is a free floating price-weighted index. The PX Index has a base value of CZK1000 as of April 5, 1994.. This page provides - Czech Republic Stock Market (SE PX) - actual values, historical data, forecast, chart, statistics, economic calendar and news. Czech Republic Stock Market (SE PX) - actual data, historical chart and calendar of releases - was last updated on May of 2018.