Palo Alto Networks ($PANW) vs Tenable Holdings ($TENB): Weighing Scale, Growth, and Valuation in Cybersecurity Palo Alto Networks is a large-cap cybersecurity platform leader with a market capitalization in the hundreds of billions, while Tenable Holdings is a smaller exposure management specialist worth roughly $3.6 billion. PANW is growing far faster, with recent quarterly revenue up about 34% year over year, versus roughly 8–9% for TENB. Both stocks have rallied sharply in 2026 on AI-driven cybersecurity demand, but PANW trades at a premium valuation while TENB carries a notably lower price-to-sales ratio.