

Fortinet vs Zscaler
Global cybersecurity company providing integrated network security hardware vs Cloud cybersecurity leader replacing traditional network hardware. Which is the better buy for your portfolio in October 2026? Plain-English answer below.
Fortinet built its network security empire on purpose-built hardware and a tightly integrated operating system, while Zscaler went all-in on a cloud-native zero trust architecture that routes traffic through its global network of data centers. Both companies chase enterprise security budgets as organizations move workloads off-premises and cyber threats grow more sophisticated. In Fortinet vs Zscaler, readers cut through the vendor narratives to see how each company's growth rate, gross margins, free cash flow, and competitive positioning compare as the enterprise security market continues to consolidate.
Fortinet built its network security empire on purpose-built hardware and a tightly integrated operating system, while Zscaler went all-in on a cloud-native zero trust architecture that routes traffic ...
Why It’s Moving

Fortinet Beats Q3 Expectations with 20% Revenue Growth and New AI Security Offerings
- Q3 financials showed revenue growing 20% year-over-year to $2.08 billion, with non-GAAP EPS of $0.91 beating the 31% consensus forecast for product revenue growth.
- The company announced two major product expansions: FortiLink SASE Service for simplified microbranch security and FortiGuard Inline AI Security Service for cloud-delivered AI inspection.
- Shareholder returns were boosted as the board increased the share repurchase authorization by $1.2 billion, leaving $2 billion remaining, while operating cash flow reached $946 million.

Zscaler Navigates AI-Driven Security Shifts Amid Growth Concerns and Legal Scrutiny
- A law firm has launched an investigation into claims on behalf of investors, adding a layer of regulatory and legal uncertainty to the stock's recent volatility.
- Management is targeting a 17–22% revenue CAGR through FY2031 by expanding its platform into SASE, Data Security, and Security for AI, aiming to offset near-term growth deceleration.
- The CEO highlighted widespread PHP vulnerabilities as a catalyst for increased demand, positioning Zscaler’s zero-trust architecture as a critical defense against accelerating ransomware breaches.

Fortinet Beats Q3 Expectations with 20% Revenue Growth and New AI Security Offerings
- Q3 financials showed revenue growing 20% year-over-year to $2.08 billion, with non-GAAP EPS of $0.91 beating the 31% consensus forecast for product revenue growth.
- The company announced two major product expansions: FortiLink SASE Service for simplified microbranch security and FortiGuard Inline AI Security Service for cloud-delivered AI inspection.
- Shareholder returns were boosted as the board increased the share repurchase authorization by $1.2 billion, leaving $2 billion remaining, while operating cash flow reached $946 million.

Zscaler Navigates AI-Driven Security Shifts Amid Growth Concerns and Legal Scrutiny
- A law firm has launched an investigation into claims on behalf of investors, adding a layer of regulatory and legal uncertainty to the stock's recent volatility.
- Management is targeting a 17–22% revenue CAGR through FY2031 by expanding its platform into SASE, Data Security, and Security for AI, aiming to offset near-term growth deceleration.
- The CEO highlighted widespread PHP vulnerabilities as a catalyst for increased demand, positioning Zscaler’s zero-trust architecture as a critical defense against accelerating ransomware breaches.
Investment Analysis

Fortinet
FTNT
Pros
- Fortinet offers a broad range of endpoint security services across on-premises, cloud, and IoT devices, positioning it well in diverse cybersecurity markets.
- The company's stock rose 26% over the past year, outperforming Zscaler and indicating investor confidence and relative stability.
- Fortinet has a solid financial profile with a P/E ratio around 31 and healthier valuation multiples than Zscaler, suggesting more balanced investor expectations.
Considerations
- Fortinet faces stiff competition from cloud-native cybersecurity providers like Zscaler, which may pressure growth in some segments.
- The company's exposure to cyclical IT spending and macroeconomic uncertainties could impact future revenue momentum.
- Fortinet’s growth rate and innovation pace may lag behind rapidly scaling, more specialized cloud firms, limiting its upside.

Zscaler
ZS
Pros
- Zscaler has demonstrated strong revenue growth, with 23% annual increases and significant billings growth, signalling robust demand for its zero-trust cloud-native security.
- Its positioning as a leader in cloud-native SASE solutions underpins a strong competitive moat in fast-growing cybersecurity niches.
- The company’s expanding margins and improving free cash flow forecast potential profitability improvements, enhancing long-term financial health.
Considerations
- Zscaler trades at a very high valuation with a forward P/E near 76 and price-to-sales ratio around 16, implying elevated investor expectations and valuation risk.
- Its stock exhibits higher volatility compared to Fortinet, indicating potentially greater risk for investors.
- Despite growth, recent stock performance has been mixed with some declines and forecasts suggesting possible short-term price corrections.
Fortinet (FTNT) Next Earnings Date
Fortinet has a confirmed upcoming earnings report scheduled for October 28, 2026, after market close. This release will cover the company's financial results for the third quarter of fiscal year 2026. The timing aligns with the typical reporting cadence observed in recent quarters, maintaining consistency with historical patterns.
Zscaler (ZS) Next Earnings Date
The next earnings date for ZS has not been confirmed yet. Based on the company's historical reporting pattern of quarterly releases, the upcoming report is expected in late November 2026. This anticipated release will cover the fiscal third quarter results. Investors should monitor official announcements for the precise scheduling details.
Fortinet (FTNT) Next Earnings Date
Fortinet has a confirmed upcoming earnings report scheduled for October 28, 2026, after market close. This release will cover the company's financial results for the third quarter of fiscal year 2026. The timing aligns with the typical reporting cadence observed in recent quarters, maintaining consistency with historical patterns.
Zscaler (ZS) Next Earnings Date
The next earnings date for ZS has not been confirmed yet. Based on the company's historical reporting pattern of quarterly releases, the upcoming report is expected in late November 2026. This anticipated release will cover the fiscal third quarter results. Investors should monitor official announcements for the precise scheduling details.
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