The main purpose of the article was to analyze the effectiveness of the basic investment strategies used by hedge funds in the long term (years 1994-2015) and during the global financial crisis (years 2007-2009). Using information from commercial databases we attempted to verify the hypothesis...

In Poland, more than 90% of electricity production is based on coal fuel. Meanwhile, the financial situation of the mining industry is quite challenging. Companies in this sector are in debt, generating losses caused by a sharp drop in coal prices and a simultaneous increase in extraction costs...