Created by the merger between the laboratories GLAXO WELLCOME PLC and SMITHKLINE BEECHAM PLC, GSK -GLAXOSMITHKLINE- has been listed for the first time on the stock exchange. Share trading started out slowly in London, but closed with a rise of 1.57%, at GBP 18.77. The new number-one worldwide pharmaceuticals firm, alongside the American PFIZER, with turnover of USD 22.24 billion, now has to stand the test of investors.