Abstract :
This study compares the stock market reaction to announcements of information technology in Poland, an emerging and transition economy, with the USA, a mature developed economy. Based on the results, there appears to be a significant difference in stock market reaction. Overall, the stock market reactions to the announcements of information technology are more favorable for companies located in Poland. In this context, investors react especially positive when Polish service companies announce IT investments. The results of this study are particularly important for economies in the catch-up process.