Palo Alto Networks, Inc. (PANW) has enjoyed a stellar rise of 27.4% over the past six months, significantly outpacing the Zacks Computer and Technology sector, which climbed 11.1%, and the S&P 500's more modest 10.8% gain. While this performance is impressive, it also raises questions: Should investors continue holding on to the stock, buy more or consider selling?PANW stock has also exceeded its competitors, Juniper Networks, Inc. (JNPR) and Check Point Software Technologies Ltd. (CHKP) , which have gained ...