← F5 Networks overview

F5 Networks vs Zscaler: why the prices moved differently

Weekly · monthly · quarterly news summaries, side by side in time

F5 Networks Inc (FFIV)

Q3 2026
▲4

F5's AI Security Push and Raised Outlook Drive Growth Story

  • AI Security Platform Launch and SurePath AI Acquisition F5 launched its AI Security Platform and acquired SurePath AI, expanding into enterprise AI security. This opens a new market and positions F5 to capture spending on AI risk management, supporting future revenue growth and lifting investor optimism.

    This is a major new product and acquisition that directly expands F5's addressable market and growth narrative.

  • Raised 2026 Outlook on Strong Q3 Results F5 beat Q3 estimates and raised full-year 2026 revenue and earnings guidance, citing early AI deployments. This signals stronger-than-expected demand and execution, boosting confidence in future profits and pushing the stock higher.

    Guidance raise is a direct positive catalyst for the stock and reflects underlying business momentum.

  • AI Guardrails Integration with NVIDIA F5 integrated its AI Guardrails with NVIDIA NeMo Guardrails, offering centralized AI security. This partnership strengthens F5's product ecosystem and credibility in AI security, potentially driving adoption and revenue growth.

    New product integration with a major player enhances F5's competitive position in AI security.

  • Agentic-Ready AI Gateway for Cost Optimization F5 enhanced its AI Gateway to optimize AI costs and security, integrated into the AI Security Platform. This addresses enterprise demand for efficient AI operations, potentially increasing customer adoption and recurring revenue.

    New product enhancement targets a key enterprise pain point (AI cost) and expands F5's AI offerings.

July 2026
▲4

F5's AI Security Push and Raised Outlook Drive Growth Story

  • AI Security Platform Launch and SurePath AI Acquisition F5 launched its AI Security Platform and acquired SurePath AI, expanding into enterprise AI security. This opens a new market and positions F5 to capture spending on AI risk management, supporting future revenue growth and lifting investor optimism.

    This is a major new product and acquisition that directly expands F5's addressable market and growth narrative.

  • Raised 2026 Outlook on Strong Q3 Results F5 beat Q3 estimates and raised full-year 2026 revenue and earnings guidance, citing early AI deployments. This signals stronger-than-expected demand and execution, boosting confidence in future profits and pushing the stock higher.

    Guidance raise is a direct positive catalyst for the stock and reflects underlying business momentum.

  • AI Guardrails Integration with NVIDIA F5 integrated its AI Guardrails with NVIDIA NeMo Guardrails, offering centralized AI security. This partnership strengthens F5's product ecosystem and credibility in AI security, potentially driving adoption and revenue growth.

    New product integration with a major player enhances F5's competitive position in AI security.

  • Agentic-Ready AI Gateway for Cost Optimization F5 enhanced its AI Gateway to optimize AI costs and security, integrated into the AI Security Platform. This addresses enterprise demand for efficient AI operations, potentially increasing customer adoption and recurring revenue.

    New product enhancement targets a key enterprise pain point (AI cost) and expands F5's AI offerings.

Latest
▲4

F5's AI Security Push and Raised Outlook Drive Growth Story

  • AI Security Platform Launch and SurePath AI Acquisition F5 launched its AI Security Platform and acquired SurePath AI, expanding into enterprise AI security. This opens a new market and positions F5 to capture spending on AI risk management, supporting future revenue growth and lifting investor optimism.

    This is a major new product and acquisition that directly expands F5's addressable market and growth narrative.

  • Raised 2026 Outlook on Strong Q3 Results F5 beat Q3 estimates and raised full-year 2026 revenue and earnings guidance, citing early AI deployments. This signals stronger-than-expected demand and execution, boosting confidence in future profits and pushing the stock higher.

    Guidance raise is a direct positive catalyst for the stock and reflects underlying business momentum.

  • AI Guardrails Integration with NVIDIA F5 integrated its AI Guardrails with NVIDIA NeMo Guardrails, offering centralized AI security. This partnership strengthens F5's product ecosystem and credibility in AI security, potentially driving adoption and revenue growth.

    New product integration with a major player enhances F5's competitive position in AI security.

  • Agentic-Ready AI Gateway for Cost Optimization F5 enhanced its AI Gateway to optimize AI costs and security, integrated into the AI Security Platform. This addresses enterprise demand for efficient AI operations, potentially increasing customer adoption and recurring revenue.

    New product enhancement targets a key enterprise pain point (AI cost) and expands F5's AI offerings.

Zscaler Inc (ZS)

Q3 2026
▼3▲1

AI security demand strong, but growth slowdown and cost cuts weigh

  • AI security momentum and strong Q4 results Zscaler's AI security bookings surpassed $100 million, up over 50% from the prior quarter, and Q4 EPS of $1.19 on $898 million revenue beat estimates. A partnership with Schwarz Digits for a European sovereign cloud platform also expanded its reach.

    This shows the company is capitalizing on AI-driven demand, a key growth driver for the stock.

  • Growth slowdown and margin pressure Fiscal 2027 revenue growth is guided to slow to about 17% from 25%, and free cash flow margin was cut to roughly 23% from 27% due to higher capital spending. This signals weaker future profitability and growth.

    Guidance cuts directly impact investor expectations for future earnings and cash flow.

  • Workforce reduction and executive departure Zscaler announced a 3% workforce reduction and its Chief Revenue Officer exited. These moves raised concerns about execution and morale, weighing on investor sentiment.

    Management changes and layoffs can signal internal challenges and affect future performance.

  • AI supply-chain exposure and shelf filing Zscaler was among 2,500+ firms potentially exposed in the LiteLLM AI supply-chain incident, and it filed a $1.69 billion shelf offering. These raised concerns about security risks and potential share dilution.

    Supply-chain incidents can damage reputation, and shelf filings often precede equity issuance, diluting existing shares.

September 2026
▲2▼2

Zscaler's strong Q4 overshadowed by slowing growth outlook and executive exit

  • Q4 earnings beat and strong guidance Zscaler reported Q4 EPS of $1.19 and revenue of $898M, beating estimates, and issued above-consensus guidance for fiscal 2027. The stock initially rose 11% on the news.

    This was a major positive event that initially lifted the stock.

  • AI security bookings surge AI security bookings exceeded $100M, up over 50% sequentially, with Zero Trust Everywhere customers reaching 950 and record $1M deals. The Agentic SOC launch with Anthropic and OpenAI expands its AI security platform.

    Highlights strong demand for Zscaler's AI security offerings.

  • Fiscal 2027 revenue growth slowdown Fiscal 2027 revenue growth is guided to ~17%, down from 25%, raising concerns about demand and longer sales cycles. The stock fell 7.8% on this news.

    This was a key negative driver that pulled the stock down.

  • Workforce reduction and shelf filing A 3% AI-focused workforce reduction and a $1.69B shelf filing added dilution worries. The Chief Revenue Officer's exit also weighed on the stock, which fell 4%.

    These events contributed to negative sentiment and stock decline.

Latest
▲2▼1

AI security bookings surge, but growth slowdown and CRO exit weigh on Zscaler

  • AI security bookings top $100M, up 50% sequentially Zscaler's AI security bookings crossed $100 million over the past year and grew over 50% in the latest quarter. Customers using its Zero Trust Everywhere product jumped to 950 from 300, and it closed a record number of $1 million deals. This shows its AI bet is gaining real traction, supporting the stock.

    This is the core new evidence that Zscaler's AI security products are selling, directly addressing the growth question.

  • Agentic SOC launch deepens AI security platform Zscaler launched Agentic SOC, an AI-powered security operations platform co-developed with Anthropic and OpenAI. It uses AI agents and over 750 billion daily zero trust transactions to automate threat response. This expands its product lineup and could drive future demand, supporting the stock.

    The new product launch is a fresh catalyst that could become a second growth engine, directly relevant to the AI security narrative.

  • Chief Revenue Officer steps down, successor named Zscaler appointed Ross Tackett as Chief Revenue Officer effective October 1, 2026, succeeding Mike Rich, who is stepping down for personal reasons. Leadership changes in sales can create uncertainty about execution, and the stock fell 4% on the news.

    A CRO transition is a new event that adds execution risk and weighed on the stock, providing a fair counterweight.

▲2▼2

Zscaler's strong Q4 offset by slower 2027 growth outlook

  • Q4 beat and strong guidance Zscaler reported Q4 EPS of $1.19 and revenue of $898 million, beating estimates, and issued Q1 and full-year 2027 guidance above consensus. Shares initially jumped 11% after hours, showing the market rewarded the results.

    This is the core new event that drove the stock up initially.

  • Slower 2027 growth outlook Fiscal 2027 revenue growth is guided to about 17%, down from 25% in 2026, and ARR growth also slows. This step-down raised concerns about cooling demand and longer sales cycles, pulling the stock down 7.8% after the initial pop.

    This is the main reason the stock reversed and fell, a key new negative driver.

  • AI restructuring and shelf filing Zscaler announced a 3% workforce reduction to focus on AI and filed a $1.69 billion shelf registration for ESOP-related stock. The restructuring and potential dilution added to investor worries, contributing to the sell-off.

    These are new negative events that weighed on sentiment.

  • New Agentic SOC product launch Zscaler launched Agentic SOC, an AI-powered security operations solution using zero trust telemetry and partnerships with Anthropic and OpenAI. This expands its AI security offerings and could drive future demand, supporting the stock.

    This is a new product that shows innovation and potential growth.

August 2026
▲2▼2

Zscaler's AI Security Demand Grows, But Costs and a Supply-Chain Scare Weigh

  • European sovereign cloud partnership expands reach Zscaler teamed with Schwarz Digits to launch a sovereign cloud security platform in Europe, combining its Zero Trust Exchange with Germany-hosted STACKIT infrastructure. This opens a new regulated-market sales channel, supporting future revenue and giving the stock a demand-side lift.

    A concrete new growth avenue that directly supports Zscaler's revenue outlook.

  • AI supply-chain exposure flags Zscaler among 2,500 firms CloudSEK said Zscaler is among 2,500-plus organizations potentially exposed in the LiteLLM AI supply-chain incident, with credentials and secrets possibly accessible. Appearing on the list doesn't prove a breach, but it raises reputational and cleanup risk, a modest drag on sentiment.

    A new negative headline naming Zscaler directly, which can pressure the stock.

  • CapEx raised, free cash flow margin guidance cut Zscaler lifted its fiscal 2026 CapEx outlook to high-single-digit percent of revenue and cut its free cash flow margin guidance to about 23% from 27%, pulling forward equipment buys to beat rising memory and processor prices. Higher spending and thinner cash generation weigh on the stock.

    A direct hit to profitability and cash flow expectations, a core valuation driver.

  • Peer results confirm AI-driven security demand Palo Alto Networks posted its strongest network security quarter in years on AI and cloud spending, and Salesforce's surge showed AI is lifting software demand. Analysts expect Zscaler's coming earnings to benefit from the same trend, supporting the stock ahead of its report.

    Sector-wide evidence that AI security spending is accelerating, a key support for Zscaler's growth story.

▲2▼2

Zscaler's AI Security Demand Grows, But Costs and a Supply-Chain Scare Weigh

  • European sovereign cloud partnership expands reach Zscaler teamed with Schwarz Digits to launch a sovereign cloud security platform in Europe, combining its Zero Trust Exchange with Germany-hosted STACKIT infrastructure. This opens a new regulated-market sales channel, supporting future revenue and giving the stock a demand-side lift.

    A concrete new growth avenue that directly supports Zscaler's revenue outlook.

  • AI supply-chain exposure flags Zscaler among 2,500 firms CloudSEK said Zscaler is among 2,500-plus organizations potentially exposed in the LiteLLM AI supply-chain incident, with credentials and secrets possibly accessible. Appearing on the list doesn't prove a breach, but it raises reputational and cleanup risk, a modest drag on sentiment.

    A new negative headline naming Zscaler directly, which can pressure the stock.

  • CapEx raised, free cash flow margin guidance cut Zscaler lifted its fiscal 2026 CapEx outlook to high-single-digit percent of revenue and cut its free cash flow margin guidance to about 23% from 27%, pulling forward equipment buys to beat rising memory and processor prices. Higher spending and thinner cash generation weigh on the stock.

    A direct hit to profitability and cash flow expectations, a core valuation driver.

  • Peer results confirm AI-driven security demand Palo Alto Networks posted its strongest network security quarter in years on AI and cloud spending, and Salesforce's surge showed AI is lifting software demand. Analysts expect Zscaler's coming earnings to benefit from the same trend, supporting the stock ahead of its report.

    Sector-wide evidence that AI security spending is accelerating, a key support for Zscaler's growth story.

Q2 2026
▲3▼1

Zscaler's strong demand and partnerships offset competitive and legal worries

  • Z-Flex program drives strong demand Zscaler's Z-Flex program generated over $480 million in total contract value in the third quarter, up more than 60% from the prior quarter. Annual recurring revenue rose 25% to over $3.5 billion. This shows customers are committing more, which supports future revenue and should lift the stock.

    This is a new positive demand signal that directly boosts Zscaler's growth outlook.

  • Aston Martin F1 cybersecurity deal Zscaler announced a multi-year partnership with the Aston Martin Aramco Formula One Team to protect its car design, race strategy, and real-time data. The stock jumped 6% on the news. This high-profile deal validates Zscaler's technology and could attract more customers.

    It's a new contract win that signals demand and boosts investor confidence.

  • CIO survey shows solid spending plans A Jefferies survey of 40 CIOs found that 43% plan to increase spending on Zscaler in 2026, even as cybersecurity budgets grow in line with IT. This indicates steady demand, though the pace of budget increases may be gradual.

    It provides forward-looking demand evidence that supports Zscaler's growth narrative.

  • Pomerantz investigation into possible securities fraud Pomerantz LLP is investigating Zscaler for possible securities fraud after the company's revenue guidance missed expectations, causing a 31% stock drop. Legal uncertainty can weigh on the stock and distract management, though the investigation is at an early stage.

    It's a new legal risk that could pressure the stock and investor sentiment.

June 2026
▲3▼1

Zscaler's strong demand and partnerships offset competitive and legal worries

  • Z-Flex program drives strong demand Zscaler's Z-Flex program generated over $480 million in total contract value in the third quarter, up more than 60% from the prior quarter. Annual recurring revenue rose 25% to over $3.5 billion. This shows customers are committing more, which supports future revenue and should lift the stock.

    This is a new positive demand signal that directly boosts Zscaler's growth outlook.

  • Aston Martin F1 cybersecurity deal Zscaler announced a multi-year partnership with the Aston Martin Aramco Formula One Team to protect its car design, race strategy, and real-time data. The stock jumped 6% on the news. This high-profile deal validates Zscaler's technology and could attract more customers.

    It's a new contract win that signals demand and boosts investor confidence.

  • CIO survey shows solid spending plans A Jefferies survey of 40 CIOs found that 43% plan to increase spending on Zscaler in 2026, even as cybersecurity budgets grow in line with IT. This indicates steady demand, though the pace of budget increases may be gradual.

    It provides forward-looking demand evidence that supports Zscaler's growth narrative.

  • Pomerantz investigation into possible securities fraud Pomerantz LLP is investigating Zscaler for possible securities fraud after the company's revenue guidance missed expectations, causing a 31% stock drop. Legal uncertainty can weigh on the stock and distract management, though the investigation is at an early stage.

    It's a new legal risk that could pressure the stock and investor sentiment.

▲3▼1

Zscaler's strong demand and partnerships offset competitive and legal worries

  • Z-Flex program drives strong demand Zscaler's Z-Flex program generated over $480 million in total contract value in the third quarter, up more than 60% from the prior quarter. Annual recurring revenue rose 25% to over $3.5 billion. This shows customers are committing more, which supports future revenue and should lift the stock.

    This is a new positive demand signal that directly boosts Zscaler's growth outlook.

  • Aston Martin F1 cybersecurity deal Zscaler announced a multi-year partnership with the Aston Martin Aramco Formula One Team to protect its car design, race strategy, and real-time data. The stock jumped 6% on the news. This high-profile deal validates Zscaler's technology and could attract more customers.

    It's a new contract win that signals demand and boosts investor confidence.

  • CIO survey shows solid spending plans A Jefferies survey of 40 CIOs found that 43% plan to increase spending on Zscaler in 2026, even as cybersecurity budgets grow in line with IT. This indicates steady demand, though the pace of budget increases may be gradual.

    It provides forward-looking demand evidence that supports Zscaler's growth narrative.

  • Pomerantz investigation into possible securities fraud Pomerantz LLP is investigating Zscaler for possible securities fraud after the company's revenue guidance missed expectations, causing a 31% stock drop. Legal uncertainty can weigh on the stock and distract management, though the investigation is at an early stage.

    It's a new legal risk that could pressure the stock and investor sentiment.

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