“…The results were similar to the studies by Fiszeder and Mstowska, who recorded positive abnormal rates of return in the period preceding the splits, but it was for a shorter 10-day event (Fiszeder & Mstowska, 2011). The conclusions of the analysis clearly differed from the studies by Kopaczewska or Jamróz and Koronkiewicz, in which the presence of the price effect caused by the split of shares was not confirmed (Kopaczewska, 2004;Jamróz & Koronkiewicz, 2013). However, it should be emphasized that these studies covered a different period and different methods of analysis were used.…”