In the mid-session, the WIG20 fell at low turnover, pulled down by KGHM (WSE: KGH) and PGNiG (WSE: PGN). At the same time, the Polish currency weakened against the euro.

At 13.00 (Warsaw time) the WIG20 index lost 0.33 percent and was amounted at 1,833 points.

Among the largest companies hardest lose PGNiG (minus 2.1 per cent) and KGHM (minus 2.2 percent). The copper company (KGHM) has at the same time the highest turnover in the whole market. The second volume of trade have shares of PGE, which grow by 1.59 percent, almost the strongest in the index. In the last days the company's shares behave better than the broad market, reflecting strong sell-off of half of the month.