Palo Alto Networks shares surge after earnings, Napco Security tumbles and more stocks on the move

Here are some of the biggest movers ahead of Monday’s open:

Stock gainers:

Shares of Palo Alto Networks Inc.
PANW,
+1.02%
surged 8% after the cybersecurity company’s unusual late Friday report revealed earnings and a billings outlook above Street estimates as AI-backed cyberattacks rise and the Securities and Exchange Commission seeks quicker reporting from companies on material attacks.