Timestamp (black vertical line) : Mar 1 2020 ---> Lockdowns worldwide due to Covid-19 - - - - - - - - - - - - - - - - - - - - - - - - - - - GlaxoSmithKline plc ( GSK ) LSE:GSK GlaxoSmithKline plc ( GSK ) is a British multinational pharmaceutical company headquartered in Brentford, England. Price decrease of 9.50% - - - - - - - - - - - - - - - - - - - - - - -...