Shares of Zscaler (NASDAQ: ZS) ended last week with a bang. The cloud security stock rocketed nearly 30% on the heels of its strong fiscal fourth-quarter results. 

However, despite that big move higher, Zscaler's stock is still nearly 50% below its 52-week high. That makes it looks like a screaming buy, given the explosive growth it's delivering and sees ahead. 

Zscaler's unstoppable growth was on full display during its fiscal fourth quarter. The cybersecurity company's revenue exploded 61% in the period, growing to $318.1 million. That pushed its full-year revenue up 62% to nearly $1.1 billion. 

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Source Fool.com