shares of f5 inc ffiv shed 379 to 14631 thursday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 249 to 389575 and dow jones industrial average djia falling 225 to 3320222 this was the stocks second consecutive day of losses f5 inc closed 10269 short of its 52week high 24900 which the company achieved on december 29th despite its losses the stock outperformed some of its competitors thursday as ceridian hcm holding inc cday fell