Palo Alto Networks (NASDAQ: PANW) investors just cannot catch a break. Over the past three days, this cybersecurity stock has been downgraded by three separate investment bank analysts, beginning with Guggenheim cutting the stock to sell on Monday,

Palo Alto Networks Inc.’s stock is up 40% from its February low — but a Guggenheim analyst questions whether the cybersecurity name will be able to continue defying doubts.

Palo Alto Networks ( PANW -2.05%), one of the world's largest cybersecurity companies, has been a great long-term stock for growth investors. If you had invested $1,000 in its IPO in 2012, your stake would be worth about $26,500 today.

FEATURE It’s time to hop off the Palo Alto Networks seesaw, Guggenheim Securities says. Analysts John DiFucci and Lawrence Vensko downgraded shares of the cybersecurity stock to Sell from Neutral. They set a target of $130 for the price;

Palo Alto Networks Inc. (NASDAQ: PANW) is the world's cybersecurity leader at a time when cybersecurity has never been more critical. From its origins as the leading creator of firewalls, Palo Alto’s business has evolved to meet the growing threats that continue to emerge.