shares of cgi inc cl a giba dropped 186 to c10434 monday in what proved to be an allaround rough trading session for the canadian market with the sptsx composite index gsptse falling 108 to 1881680 the stocks fall snapped a fourday winning streak cgi inc cl a closed c1254 below its 52week high c11688 which the company reached on september 2nd trading volume of 229020 shares remained below its 50day average volume of 437220