The shares of Duro Felguera went up 20% on the Stock Exchange at 9.28 hours after the Asturian company notified yesterday, after the closing of the market, that it obtained a clearly attributed profit of 241,8 million euros in the first six months of the year, thus coming out of the 'red numbers' of 26 million euros that it recorded in the same period of the previous year. Specifically, the titles of the engineering company advanced 20% on the S…