

Zscaler vs Western Digital
Cloud cybersecurity leader replacing traditional network hardware vs Major manufacturer of hard drives and flash storage. Which is the better buy for your portfolio in November 2026? Plain-English answer below.
Zscaler runs a cloud-native zero trust security platform that routes enterprise traffic through its global network, while Western Digital manufactures hard disk drives and NAND flash storage for data centers and consumer devices. Zscaler vs Western Digital contrasts a high-growth cybersecurity software model with a cyclical hardware manufacturer whose fortunes swing with memory pricing. Readers will see how business model resilience, pricing power, and demand patterns diverge between a security software platform and a commodity storage hardware producer.
Zscaler runs a cloud-native zero trust security platform that routes enterprise traffic through its global network, while Western Digital manufactures hard disk drives and NAND flash storage for data ...
Why It’s Moving

Zscaler CEO Defends Valuation Amid AI Pivot and Upcoming Earnings
- CEO Jay Chaudhry argues Wall Street underestimates Zscaler, emphasizing that its cloud-native Zero Trust model is uniquely positioned to secure AI agent threats that legacy tools cannot handle.
- The company announced it will release first quarter fiscal year 2027 earnings on December 2, 2026, a key catalyst investors are watching given recent stock volatility.
- Despite a -9.16% drop in share price to $203.88 on November 5, analysts note that strong AI security momentum and a presence in over 50% of Fortune 500 companies support long-term growth potential.

WDC Volatility Deepens as AI Sector Swings Offset Strong Earnings Momentum
- Stocks rebounded sharply on November 6 with WDC jumping 8%, recovering from earlier declines triggered by a lawmaker's call for an AI pause and post-election uncertainty that had previously dragged shares down 5%.
- Fundamentals remain strong despite price action, with fiscal Q1 revenues growing 55% to $4.38 billion and non-GAAP EPS increasing 161% to $4.64, supported by higher-capacity HDD demand and operational efficiencies.
- Analysts highlight a disconnect between valuation risks and growth metrics, noting that while premium valuations and HAMR execution risks warrant caution, the company's gross margin momentum and 88% cloud revenue share signal sustained structural strength.

Zscaler CEO Defends Valuation Amid AI Pivot and Upcoming Earnings
- CEO Jay Chaudhry argues Wall Street underestimates Zscaler, emphasizing that its cloud-native Zero Trust model is uniquely positioned to secure AI agent threats that legacy tools cannot handle.
- The company announced it will release first quarter fiscal year 2027 earnings on December 2, 2026, a key catalyst investors are watching given recent stock volatility.
- Despite a -9.16% drop in share price to $203.88 on November 5, analysts note that strong AI security momentum and a presence in over 50% of Fortune 500 companies support long-term growth potential.

WDC Volatility Deepens as AI Sector Swings Offset Strong Earnings Momentum
- Stocks rebounded sharply on November 6 with WDC jumping 8%, recovering from earlier declines triggered by a lawmaker's call for an AI pause and post-election uncertainty that had previously dragged shares down 5%.
- Fundamentals remain strong despite price action, with fiscal Q1 revenues growing 55% to $4.38 billion and non-GAAP EPS increasing 161% to $4.64, supported by higher-capacity HDD demand and operational efficiencies.
- Analysts highlight a disconnect between valuation risks and growth metrics, noting that while premium valuations and HAMR execution risks warrant caution, the company's gross margin momentum and 88% cloud revenue share signal sustained structural strength.
Investment Analysis

Zscaler
ZS
Pros
- Zscaler reported a 21% year-over-year revenue increase in Q4 2025, reaching $719 million, with billings up 32% to $1.2 billion, showing strong growth momentum.
- The company was recognized as a leader in the Forrester Wave for SASE solutions, highlighting its strong position in cloud-native cybersecurity.
- Zscaler guided fiscal 2026 annual recurring revenue (ARR) to $3.68 billion, indicating solid future revenue visibility and expanding margins.
Considerations
- Despite revenue growth, Zscaler reported losses of $41.48 million in 2025, though reduced by 28%, losses still persist impacting profitability.
- The stock trades at a steep premium with significant valuation concerns amid increasing competition in the cybersecurity sector.
- Price forecasts from some analysts predict a potential near-term decline, with average price targets indicating possible downside by end of 2025.
Pros
- Western Digital is a market leader in digital storage solutions, serving both industrial and consumer markets with a broad product portfolio.
- The stock trades at a moderate P/E ratio around 13, indicating reasonable valuation compared to peers in the tech storage sector.
- Western Digital offers a dividend, albeit modest, with some of the highest dividend yields among S&P 500 companies in the technology space.
Considerations
- The company faces exposure to cyclical hardware demand and commodity sensitivity, impacting revenue and profitability volatility.
- Competitive pressure from emerging storage technologies and rivals can challenge market share and margin expansion.
- Macroeconomic or geopolitical risks affecting supply chains and global demand for storage devices could negatively impact performance.
Zscaler (ZS) Next Earnings Date
No confirmed upcoming earnings date has been announced for ZS as of the current reporting cycle. Based on the historical pattern of reports occurring approximately three months apart, the next release is expected in December 2026. This anticipated report will cover the company's fiscal fourth quarter results. Investors should monitor official channels for the precise scheduling confirmation.
Western Digital (WDC) Next Earnings Date
Western Digital has not yet confirmed a specific date for its next earnings release. Based on the company's historical reporting pattern, which typically follows a quarterly cycle of approximately three months, the upcoming report is expected in late January 2027. This forthcoming announcement will cover results for the fiscal quarter ending in December 2026.
Zscaler (ZS) Next Earnings Date
No confirmed upcoming earnings date has been announced for ZS as of the current reporting cycle. Based on the historical pattern of reports occurring approximately three months apart, the next release is expected in December 2026. This anticipated report will cover the company's fiscal fourth quarter results. Investors should monitor official channels for the precise scheduling confirmation.
Western Digital (WDC) Next Earnings Date
Western Digital has not yet confirmed a specific date for its next earnings release. Based on the company's historical reporting pattern, which typically follows a quarterly cycle of approximately three months, the upcoming report is expected in late January 2027. This forthcoming announcement will cover results for the fiscal quarter ending in December 2026.
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