GLPG.BR or GLPYY? If I wanted to invest in Galapagos, which stock should I buy? GLPYY average daily volume is 1852 http://finance.yahoo.com/q/hp?s=GLPYY+Historical+Prices GLPG.BR has an average daily volume of 34,435 http://finance.yahoo.com/q/hp?s=GLPG.BR+Historical+Prices Thanks.