Zscaler Posts 25% Revenue Growth and 24.3% Margin Record

Zscaler reported 25% revenue growth and a record 24.3% operating margin in the fourth quarter of fiscal 2026, with net new annual recurring revenue accelerating to 17% year over year, and shares closed at 177.80, up 2.94%, on Sept. 3, 2026.

Zscaler Inc (NASDAQ: ZS) closed its fiscal 2026 with the combination security software investors have been asking for and rarely getting: growth that did not slow and profitability that improved at the same time. The company reported 25% revenue growth in the fourth quarter, an operating margin of 24.3% — a record for the business — and net new annual recurring revenue accelerating to 17% year over year, according to management commentary on the earnings call reported by GuruFocus.

Shares last traded at 177.80, up 2.94% on the session, in a broadly higher tape on Sept. 3, 2026. The stock's day range ran from 173.93 to 179.96 against a prior close of 172.73.

Why net new ARR matters more than the revenue line

Revenue in a subscription business is a lagging figure. It reflects contracts signed months or years earlier, recognised evenly over their terms. Annual recurring revenue — the annualised value of subscriptions in force — is closer to real time, and net new ARR, the incremental amount added in a period after churn and downgrades, is the cleanest read on current demand.

That is why an acceleration to 17% carries weight. For most of the past two years the story across enterprise security has been decelerating bookings dressed up by revenue that had not caught up yet. A net new ARR figure moving in the right direction says the opposite: the pipeline converting today is bigger than the pipeline that converted a year ago. It is the number that determines what revenue growth looks like four quarters from now.

The 25% top-line growth is the payoff from prior periods. If net new ARR is genuinely accelerating, the deceleration curve that analysts have been penciling into models flattens out — and that is the part of the report most likely to move estimates.

A margin record is the harder half of the story

Reaching a record 24.3% operating margin while growing revenue 25% is the piece that separates this quarter from a routine beat. Security software has historically bought growth with sales headcount and channel spend; margins expanded only when growth slowed and companies stopped hiring. Doing both at once implies operating leverage in the platform itself — that new ARR is landing on infrastructure and a sales organisation already paid for.

For a cloud security company, that leverage has a structural source. Zscaler routes customer traffic through its own cloud rather than through appliances shipped to customer sites. Once the points of presence exist, each additional seat carries a low marginal cost. When volumes rise faster than capacity spending, the margin line responds. A record margin suggests that dynamic is now visible in the reported numbers rather than promised in the long-term model.

The question the market will press on next is durability. A single quarterly record can reflect timing — a slipped hiring plan, deferred marketing, a favourable mix of renewals versus new logos. A margin that holds through the seasonally weaker opening quarters of fiscal 2027 would be the confirmation.

What the share price is discounting

Zscaler's 2.94% gain came on a day when the broad market was already up: the S&P 500 tracker (SPY) closed at $773.17, ahead 1.05%, the Nasdaq 100 tracker (QQQ) at $717.67, up 1.19%, and the Dow tracker (DIA) at $536.93, up 1.19%. So roughly half of the move can be attributed to the market rather than the company — a measured response rather than a re-rating, which is often what happens when a high-multiple name delivers exactly what it was expected to deliver.

High-growth security software trades on forward revenue multiples that assume growth persists for years. The bull case for Zscaler after this print is straightforward: 25% growth, an ARR trajectory that is improving rather than fading, and margins that are expanding into that growth. The bear case is equally simple: the valuation already assumes all of it, and the stock's reaction suggests the market thinks so too.

The competitive frame

Zscaler sits in the part of the market where network security and identity converge — replacing the perimeter model, in which everything inside the corporate network is trusted, with per-request verification. That thesis has been consolidating spend for several years, and the larger platform vendors have been buying and building to defend their share of it.

Consolidation cuts both ways for a specialist. Enterprises reducing their vendor count can hand more budget to whichever platform they standardise on, or they can fold a point solution into a broader suite from a competitor at renewal. Net new ARR is precisely the metric that reveals which of those two is happening — and the reported acceleration argues Zscaler is on the winning side of at least this cycle of consolidation decisions.

What to watch from here

• Whether the ARR acceleration repeats. One quarter of improvement can be a comparison effect. Two quarters is a trend, and it would force upward revisions to out-year revenue.
• Whether 24.3% is a ceiling or a floor. Management's framing of the fiscal 2027 margin path matters more than the record itself.
• Mix between new customers and expansion. Growth driven by upsells into existing accounts is cheaper and more defensible; growth that requires new logos costs more sales spend and pressures the margin line.
• Large-deal cadence. Enterprise security purchases are lumpy, and the biggest contracts distort quarterly ARR in both directions.

For now, the fiscal fourth quarter gives Zscaler something few of its peers can claim this year: acceleration and record profitability in the same set of numbers. The burden of proof shifts to fiscal 2027, when the company has to show that neither was a one-quarter event.

Key facts

• ZS last close: 177.80, +2.94% (as of Sept. 3, 2026, 20:00 GMT)
• Q4 FY2026 revenue growth: 25% year over year
• Operating margin: 24.3% — a company record
• Net new ARR growth: Accelerating to 17% year over year

Frequently asked questions

What did Zscaler report for its fiscal fourth quarter of 2026?

Zscaler reported 25% revenue growth for the fourth quarter of fiscal 2026, alongside an operating margin of 24.3%, which the company described as a record. Net new annual recurring revenue accelerated to 17% year over year. The figures were discussed on the company's earnings call and reported by GuruFocus on Sept. 4, 2026.

What is net new ARR and why does it matter?

Annual recurring revenue is the annualised value of subscription contracts in force. Net new ARR is the incremental amount added in a period after accounting for churn and downgrades. It is a more current read on demand than reported revenue, which reflects contracts signed in earlier periods, so it signals what revenue growth will look like several quarters ahead.

How did Zscaler shares react?

ZS last traded at 177.80, up 2.94% from a prior close of 172.73, with a day range of 173.93 to 179.96 as of the close on Sept. 3, 2026. That move came on a day when the broad market was also higher, with the S&P 500 tracker up 1.05% and the Nasdaq 100 tracker up 1.19%.

Why is a record operating margin significant for a security software company?

Security software firms have typically expanded margins only when growth slowed and hiring stopped. Delivering a record 24.3% operating margin while growing revenue 25% implies genuine operating leverage — new subscription revenue landing on infrastructure and a sales organisation that has already been paid for, rather than requiring proportional new spending.

How did the broader market perform that day?

On Sept. 3, 2026, the S&P 500 tracker SPY closed at $773.17, up 1.05%; the Nasdaq 100 tracker QQQ closed at $717.67, up 1.19%; and the Dow tracker DIA closed at $536.93, up 1.19%. All three benchmarks finished higher, meaning part of Zscaler's gain reflected the market rather than company-specific news.

What should investors watch next from Zscaler?

The key items are whether net new ARR acceleration repeats in subsequent quarters, whether the 24.3% operating margin proves to be a ceiling or a new base, the split between new-customer growth and expansion within existing accounts, and the cadence of large enterprise deals, which can distort quarterly ARR in either direction.

Sources

• Zscaler Inc (ZS) (Q4 2026) Earnings Call Highlights: Record Operating Margin and Accelerating ... — GuruFocus

Photo: Mutante · BY-SA 3.0 — source