Correction of quotations of companies in the industry
source: Rynek Elektryczny, 17.09.2020, page 8
"After an unprecedented 20% increase in July, the Electricity Market Index, which reflects the stock exchange of companies in the lighting industry, fell by 3,1% in August. This happened against the sentiment across the stock exchange, which was even better than a month earlier - the WIG increased by 4% after an increase of 1,8% in July. (...)"