This Unstoppable Stock Is Obliterating the S&P 500 and the Nasdaq-100 in 2026, but Is There Still Time to Buy?
Palo Alto Networks (PANW) stock surged 78% in 2026, outperforming the S&P 500 and Nasdaq-100. The company's cybersecurity solutions, like Prisma AIRS and Cortex XSIAM, address AI-related vulnerabilities. Q4 2026 revenue grew 34% YoY to $3.41B, with platformized customers increasing 78% YoY. However, its P/S ratio of 21.7 is above historical averages, raising valuation concerns.
How this was made

The 30-second read
Why it matters
The earnings beat and rapid ARR expansion reinforce the company's leadership in AI security, but the elevated price‑to‑sales multiple raises valuation concerns.
Market read
Strong earnings may sustain the stock's rally, yet high multiples could trigger profit‑taking; sector peers likely benefit from AI security demand.
What to watch
Potential slowdown in AI spending or macro‑economic headwinds could temper growth expectations.
Background
Palo Alto Networks reported its fiscal Q4 2026 results, emphasizing AI‑driven product growth and platformization.
Ticker impact
Q4 FY2026 revenue $3.41B (+34% YoY) and Prisma AIRS $100M ARR milestone disclosed for the first time.
Potential short‑term pullback as investors reassess valuation; upside if price falls to prior support.
Revenue and ARR numbers are materially better than prior quarter and were not previously public; market will price in growth versus valuation concerns.
Market effects
Highlights accelerating demand for AI‑focused cybersecurity, likely boosting peers in the sector.
U.S. tech and cybersecurity stocks may see increased volatility following the earnings.
Sets a benchmark for AI‑driven security solutions worldwide.
Counterpoint
Valuation at 21.7× sales is double historical average; a pullback could present a better entry point.
Key entities
- companyPalo Alto Networks
World's largest cybersecurity firm, ticker PANW.





