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

Same yardstick, side by side (as of October 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, fiscal Q1 and Q2 2027 net losses of about $116 million and $111 million, and a trailing operating margin near -39%, so continued cash burn and any slowdown in growth are the primary concerns. For ZS, zscaler trades at a high revenue multiple (about 10x trailing sales and 36x forward earnings as of October 2026), so any deceleration in growth or billings can compress the stock sharply; the drop from about $337 to about $115 within the past 52 weeks shows how fast that can happen, and consensus expects revenue growth to slow from about 25% to about 17% in fiscal 2027.

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, about 9.5 times trailing sales at the October 16, 2026 close, since it is still running large GAAP losses despite roughly 29% revenue growth. It held about $1.07 billion of cash against about $732 million of debt as of July 2026, and reported a dollar-based net retention rate near 113% earlier in the year, giving it a cushion to fund continued investment. The 18 covering analysts' mean target was about $19, close to the current price, so valuation depends heavily on growth durability and the pace at which losses narrow.

ZS. As of October 16, 2026, Zscaler traded near $204 at about 10x trailing sales and 36x forward earnings, a premium multiple typical of high-growth cloud security names but well below where it stood a year earlier, after a 32% one-year decline. The multiple reflects durable subscription revenue and free cash flow above $1 billion despite thin GAAP profitability. The valuation is sensitive to billings and net retention trends, and with consensus pointing to slower fiscal 2027 growth (about 17%), a further slowdown or rising competitive pressure would compress the multiple quickly; the 44 covering analysts have a mean target near $234.

Headline figures (approximate, October 2026): NTSK shows revenue (ttm to july 2026) ~$803M; FY2026 ~$709M, q2 fy2027 revenue ~$220.5M (+29% YoY), q2 fy2027 eps vs estimate -$0.03 vs -$0.07, net loss (ttm) ~$737M; Q2 FY2027 ~$111M; ZS shows revenue (fy2026, ttm) ~$3.35 billion, revenue growth ~25% year over year (fiscal Q4 2026), operating margin (gaap) ~-1%, near breakeven, non-gaap eps (fiscal q4 2026) ~$1.19 vs ~$1.09 est..

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.