Palo Alto Networks beat Q4 estimates and set guidance that excited Wall Street.Shares of Palo Alto Networks (PANW 3.91%) are spiking on Tuesday, up 4.8% as of 12:12 p.m. ET. The jump comes as the S&P 500 and Nasdaq Composite have lost 0.4% and 1%, respectively.Palo Alto Networks, the dominant cybersecurity company, reported its year-end and fourth-quarter earnings, beating Wall Street's targets and signaling strong growth ahead.Palo Alto Networks' stock jumps on earnings beat and raised outlookThe company's ...