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Zscaler (ZS) Stock Looks Undervalued On Cash Flow As Sales Look Fair

Simply Wall St·08/28/2026 12:32:32
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Zscaler stock has fallen about 34% over the past five years, yet a current intrinsic value estimate using a Discounted Cash Flow (DCF) approach suggests the shares may trade below fair value. At the same time, traditional market multiples look roughly in line with peers, which leaves investors weighing a potential discount against a mixed overall valuation score.

  • The roughly 34% share price decline over five years puts extra focus on whether today’s level already reflects the key business risks.
  • Expanded distribution into U.S. SMB and mid market customers, plus AI driven security demand, can support long term cash flow expectations. However, intense competition in cloud security and evolving AI related threats may pressure growth assumptions and margins.
  • With a value score of 3 out of 6, Zscaler screens as a mixed picture rather than a clear bargain or clear overvaluation on the broader checks.

The issue now is whether the DCF implied discount or the more neutral market multiple view ends up closer to how Zscaler’s valuation plays out over time.

Compare Zscaler’s mix of recent share price weakness and a 27.0% DCF discount with other potential rebound candidates by scanning 46 high quality undervalued stocks.

Is Zscaler a Bargain on Cash Flow?

The Discounted Cash Flow (DCF) model presented here estimates what Zscaler’s potential future cash generation could be worth in today’s dollars. The company currently produces last twelve month free cash flow of about $852.3 million, and the model assumes these cash flows continue to grow over time rather than shrink.

On that basis, the DCF points to an estimated intrinsic value of about $257 per share, which is roughly 27.0% above the current share price. Because Zscaler and Carahsoft are working together to extend Zero Trust offerings into U.S. SMB and mid-market customers, some investors may view the current discount as the market waiting to see how much additional free cash flow this opportunity ultimately supports.

Overall, the DCF analysis indicates that Zscaler stock appears undervalued relative to the cash flows currently included in the model.

Our Discounted Cash Flow (DCF) analysis suggests Zscaler is undervalued by 27.0%. Track this in your watchlist or portfolio, or discover 46 more high quality undervalued stocks.

ZS Discounted Cash Flow as at Aug 2026
ZS Discounted Cash Flow as at Aug 2026

Head to the Valuation section of our Company Report for more details on how we arrive at this Fair Value for Zscaler.

Is Zscaler Fairly Priced on Sales?

P/S is a useful check for Zscaler because the company is still reporting accounting losses, so revenue is the cleanest base for a simple market multiple. Right now Zscaler trades at about 9.5x P/S, which is more than double the broader Software industry average of 4.0x. It also sits below the peer group average of 11.3x, which tends to reflect other higher growth, higher multiple cloud security stocks.

The Fair Ratio model suggests a P/S of about 8.7x for Zscaler, based on its current mix of growth profile, margins, size and risk. That is only a small step below the actual 9.5x P/S, so this framework does not flag a major discount or premium. For investors weighing the DCF discount against market signals, the P/S workup points to Zscaler trading at roughly the kind of revenue multiple that might be expected for a business in its position.

On balance, Zscaler appears priced roughly in line with a reasonable P/S range rather than clearly cheap or expensive on this metric.

NasdaqGS:ZS P/S Ratio as at Aug 2026
NasdaqGS:ZS P/S Ratio as at Aug 2026

See what the numbers say about this price — find out in our valuation breakdown.

The Zscaler Narrative: What Would Justify Today's Price?

Simply Wall St Narratives pick up where the Zscaler valuation puzzle leaves off by spelling out what mix of growth, margins and earnings would need to unfold for the stock to be worth materially more or less than today’s price. Each Narrative ties Zscaler’s fair value to a specific storyline about its potential catalysts and risks so you can track over time which version of events appears closer to reality on the Community page.

The two main community views on Zscaler are far apart, with one leaning into AI and Zero Trust momentum and the other focused on execution and margin strain.

Bull case: roughly fairly valued

"Explosive growth in AI/ML traffic and emerging threats is creating new security challenges that Zscaler is rapidly addressing with differentiated AI security and agentic operations products..."

Read the full Bull Case to see why Zscaler could be undervalued

Bear case: 29% overvalued

"Management plans to “invest aggressively” to pursue what it describes as a large market and to extend into areas like agentic operations and AI security..."

Read the full Bear Case to see why Zscaler could be overvalued

Do you think there's more to the story for Zscaler? Head over to our Community to see what others are saying!

The Bottom Line

The Discounted Cash Flow (DCF) work suggests Zscaler carries an intrinsic value that is higher than the current share price, while the market multiple view points to a stock that is roughly in line with peers. That split reflects a classic tension between what its cash flow profile could support over time and what the market is currently willing to pay for growth and risk in cloud security. With the broader checks looking mixed, the key question is whether Zscaler can translate its product and AI driven security positioning into durable cash flows without eroding margins, or whether the current discount reflects the market’s assessment of execution and competitive risks.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.