Nutanix: Q4 Proved the Margin Machine, but 106% Retention Caps the Rally

Nutanix reported its fiscal fourth quarter after the close on August 26, and by late morning the stock was up about 7% to roughly $70. The quarter beat every guided metric — $757 million in revenue, record free cash flow, a 26.2% non-GAAP operating margin — and RBC Capital Markets followed the same morning by lifting its price target to $90 from $84, keeping an Outperform rating and arguing that the company's cloud growth drivers look resilient.

That framing deserves to be tested, because the two words attached to this stock — "growth" and "resilient" — now mean something different from what they meant two years ago. The quarter proved the margin machine is real. It did not prove that the growth engine has re-accelerated in a way the price has not already absorbed.

What the quarter actually proved

Nutanix's numbers were not merely better than expected; they were a step-change in profitability. Q4 revenue rose 16% year over year to $757.1 million, but the operating story was the margin: non-GAAP operating margin hit 26.2%, up from 18.3% in the year-ago quarter. Free cash flow was $277.6 million for the quarter, about a 37% margin.

The full year tells the same story at scale. Revenue was $2.85 billion, up 12%. Free cash flow was $840.7 million, up from $750.2 million a year earlier — roughly a 29% margin on roughly flat gross margin. Management's preferred scoreboard, the Rule of 40 (revenue growth plus free-cash-flow margin), hit 42, the third consecutive year above 40. This is the durable part of the investment case: an infrastructure-software company with roughly 88% gross margin, elite cash conversion, and an operating margin that expanded 2.6 points during the year.

One caution on the headline earnings figure: GAAP EPS of $4.34 in Q4 looks spectacular, but it includes a one-time roughly $1.2 billion release of a deferred-tax valuation allowance. That is an accounting artifact, not operations. The operational number is non-GAAP EPS of $0.60, versus the $0.49 the Street expected.

The growth engine underneath

The bull case rests on annual recurring revenue. Nutanix ended the year at $2.55 billion in ARR, up 16% — a one-point pickup from the 15% growth reported in the third quarter. ARR growth had decelerated from 18% in the first quarter to 15% by the third, so the Q4 tick back to 16% is the "acceleration" RBC cited. It was indeed broad-based: the company added roughly 3,100 customers during the year (650 in the fourth quarter alone), bringing its total to about 32,360, and attributed steady landings to customers migrating off VMware after Broadcom's licensing changes. The CEO has said the migration wave has years to run, and that most new logos come from VMware.

But there is a second retention number in the same release that carries more information about durability, and it is the weakest print of the modern subscription era. Net revenue retention — how much existing customers spent this year versus last, before new customers — came in at 106% in Q4, flat with the prior quarter after sliding from 109% at the start of fiscal 2026. It was roughly 110% through all of fiscal 2025 and 121% at the fiscal 2024 peak. Management attributes the slide to larger initial deal sizes, which mathematically depress the ratio. That explanation is plausible, but its consequence is the point: the installed base is no longer the growth engine. A 106% retention rate means existing customers expand spending only about 6% a year, so growth increasingly depends on landing the next migrant customer at the front door rather than on the base compounding itself.

That is exactly the pattern a "flawed-but-real" business shows, and it is why the growth claim needs to be read carefully. The company's own fiscal 2027 guidance embeds no re-acceleration: revenue of $3.18–3.23 billion implies roughly 12% growth at the midpoint, with a 24–25% non-GAAP operating margin and $850–950 million of free cash flow. The first-quarter guide of $755–765 million in revenue is roughly flat against Q4's record, up about 13% from a year ago. Also worth noting: Q4's 16% growth was flattered by the conversion of backlogged orders after a year in which CPU and memory shortages delayed revenue recognition, and management says the supply constraints will persist into fiscal 2027.

A rally that already happened

The price is the second half of the risk/reward, and it has moved a lot. Nutanix trades near $70, roughly double its 52-week low near $34 and up about 76% over six months, after a re-rating that began when the stock was in the low $40s in February. At a market capitalization near $19 billion, the stock now costs about 5.9x fiscal 2027 revenue and roughly 21x the midpoint of fiscal 2027 free cash flow guidance. A cash-generative but slower infrastructure-software peer like NetApp trades near 5.3x trailing sales. The Street split reflects the debate: RBC at $90 and Needham at $85 on the bull side; Wells Fargo and Morgan Stanley at Equal-Weight with $65 and $63 targets.

In February, a buyer at the low $40s was being paid to disagree with a decade of doubt. At $70, the market is now paying full price for the exact quality the company has proven. The margin expansion, the $2.36 billion cash and investments, and the $76 million of fourth-quarter buybacks all support the story for holders. But for new money, the "cheap enough to be wrong" bridge has crossed. Paying about 21x free cash flow for a company guiding to roughly 12% revenue growth and a retention rate at its lowest point in the modern subscription era is an execution bet, not a bargain.

The next proof window is concrete: fiscal Q1 results around late November should show whether ARR growth holds in the mid-teens and whether net revenue retention stabilizes at 106% instead of drifting toward 104–105%. The second test is whether the AI and external-storage lines — the new Dell PowerStore support, the AMD partnership, the agentic AI push that a roughly 5% workforce reduction in August was explicitly used to fund — convert from story to paid demand. Management says AI is growing rapidly but still represents a small slice of revenue, and the fiscal 2027 guidance does not front-load it.

RBC's "resilient" is fair as far as it goes: the VMware migration tailwind is real, the margin expansion is real, and the balance sheet is clean. What the evidence does not support is paying the current multiple for growth that has yet to be re-proven at this price. Holders are carried by a genuine cash machine. A new buyer at $70 is buying a well-run, moderately growing software company at a full valuation, with the whole bull case resting on retention stabilizing and AI converting over the next two to four quarters. That is a reasonable watch, not an obvious entry.