Lufthansa remains on course with an improved operating result : during the first six months of 2008 , the Group increased its offer and sales . The Group improved its operating result to 705 million euros , which marked an increase of 219 million euros in comparison with the first six months of 2007 . The newly consolidated SWISS contributed a share of 157 million euros . The net profit for the period was reported at 402 million euros ; during the same period last year this figure was at 992 million euros , however , it included book gains of 503 million euros from the sale of the Thomas Cook stake , as well as 71 million euros from the share buy - back by WAM Acquisition S.A. " The result is a strong performance in a highly challenging environment .

Question: Why are Lufthansa investors so happy ?
Their revenue has grown .