NTSK vs ZS: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: ZS is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. NTSK and ZS share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined NTSK and ZS exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Netskope, Inc. is a Santa Clara, California cybersecurity company founded in 2012 that sells the Netskope One platform, a cloud-native system for securing enterprise access to cloud apps, web traffic, private applications, and increasingly AI tools. Its products span secure web gateway, cloud access security broker (CASB), data loss prevention, zero-trust network access, and SASE and SSE architecture, which converge networking and security into a single cloud-delivered service. The company serves large and mid-sized enterprises worldwide and competes as a recognized leader in the security service edge category.

Full NTSK guide

Zscaler is a cloud-native cybersecurity company built around the zero trust security model. Instead of routing traffic through a traditional corporate network perimeter, Zscaler operates a globally distributed cloud platform that sits between users and the applications they access, inspecting traffic and enforcing security policy in real time. Its two flagship products are Zscaler Internet Access (ZIA), which secures connections to the public internet and SaaS apps, and Zscaler Private Access (ZPA), which connects users directly to private applications without exposing the corporate network.

Full ZS guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• NTSK drivers: SASE and SSE platform consolidation; Recurring revenue and net retention.
• ZS drivers: Zero trust replacing legacy perimeter; Platform expansion and upsell.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Netskope remains deeply unprofitable on a GAAP basis, reporting a fiscal 2026 net loss of roughly $679 million and a fiscal Q1 2027 net loss of about $116 million, so continued cash burn and any slowdown in growth are the primary concerns. For ZS, zscaler trades at a high revenue multiple, so any deceleration in growth or billings can compress the stock sharply.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick NTSK if you believe its drivers more; ZS if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the NTSK and ZS guides.

NTSK. Netskope trades on revenue-multiple terms rather than earnings, since it is still running large GAAP losses despite roughly 30% recurring-revenue growth. The company ended fiscal Q1 2027 with about $1.1 billion in cash and marketable securities and a dollar-based net retention rate near 113%, giving it a cushion to fund continued investment. Valuation therefore depends heavily on growth durability and the pace at which losses narrow.

ZS. Zscaler trades at a premium price-to-sales multiple typical of high-growth cloud security names, reflecting durable subscription revenue and strong free cash flow despite thin GAAP profitability. The valuation is sensitive to billings and net retention trends; a slowdown in growth or rising competitive pressure would compress the multiple quickly.

Headline figures (approximate, July 2026): NTSK shows revenue (fy2026, ended jan 31 2026) ~$709M, revenue growth (yoy) ~32%, q1 fy2027 revenue ~$202M (+28% YoY), annual recurring revenue ~$845M (+29% YoY); ZS shows revenue (ttm) ~$2.7 billion, revenue growth ~20% year over year, operating margin (gaap) ~low single digits or near breakeven, operating margin (non-gaap) ~20%.

NTSK and ZS are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined NTSK and ZS exposure against your real portfolio. It is not an investment adviser.