Should You Be Worried About Marvell Stock?

October 2nd, 2026 · by Trefis Team

MRVLYTD+215.9%SPYYTD+12.6%QQQYTD+21.1%

Marvell Technology (MRVL) grew its sales 37% from a year earlier in fiscal Q2 2027. Management has raised its sales forecast for fiscal 2027 and fiscal 2028. Investors pay 91 times the past twelve months of earnings for the stock, against about 21 times for the S&P 500. Most of Marvell’s sales come from one group of customers. Who are those customers, and could they cut their spending?

Marvell’s AI Customers Could Cut Their Spending

Those customers are the large companies building AI data centers, and yes, they could cut their spending. Marvell sells them chips, but it does not control their budgets. A pause in AI spending is the threat, and it would come from outside the company.

A news report on September 28, 2026 said Marvell and other AI stocks fell. The report blamed OpenAI, which had said it halted the training of its latest AI models. OpenAI’s statement was about training its models, not about its spending.

Marvell is planning for the spending to continue. On its fiscal Q2 2027 call, management said it is securing additional capacity, citing its confidence in sustained customer demand.

One customer stands out. On that call, management pointed to an expanded agreement with one key customer. Management called that customer one of the largest adopters of custom chips.

How Exposed Are Marvell And Its Stock?

Marvell is heavily exposed, because data center customers are most of its business. The data center market brought in 79% of Marvell’s revenue in fiscal Q2 2027. Revenue from that market grew 46% from a year earlier.

Management expects the growth to continue. For the full fiscal year 2027, it forecasts data center revenue growth of about 60%. It expects total revenue of approximately $18 billion in fiscal 2028, against $8.2 billion in fiscal 2026, two years earlier.

Marvell is also paying ahead of those sales. It is on pace to make about $1 billion of capacity prepayments to suppliers in fiscal 2027. That money is committed now, for materials Marvell expects to buy later.

The stock is exposed too. Marvell trades at 25.5 times its sales over the past twelve months. That is near the top of where the multiple has been over the past ten years. The price appears to assume that the forecast growth arrives.

If you bought the stock a year ago, you have a large gain to protect. A $10,000 holding bought a year ago is worth about $32,000 today. That gain remains even with the stock 15.3% below its 52-week high.

Do Marvell’s Results Justify Being Worried?

Not so far. Marvell’s latest quarter and guidance show no slowdown. Management guided fiscal Q3 2027 revenue to $3.15 billion, plus or minus 5%. The middle of that range is above the $2.74 billion Marvell reported for fiscal Q2 2027.

The threat is real, but it is not in Marvell’s figures yet. You should still take the threat seriously, because Marvell stock has fallen hard in past shocks. The stock fell 55% during the 2025 tariff shock, when the S&P 500 fell 19%.

Marvell’s data center sales are growing, but a pause in AI spending by its largest customers could stop that growth. Management holds its Investor Day on October 6. If management keeps its fiscal 2028 revenue outlook of approximately $18 billion there, it still expects its customers to keep spending. The bottom of the guided range for fiscal Q3 2027 is about $2.99 billion. Revenue below that could be the first sign that Marvell’s customers are slowing.

How To Act On MRVL?

Now you know MRVL better. And that’s our purpose: to make you informed before you invest your money. However, making a bet on a single stock carries its own risks.

There is a smarter choice. Since its inception, the Trefis High Quality (HQ) Portfolio has beaten the benchmark that combines the three major indices – the S&P 500, S&P Mid-cap, and Russell 2000. And it did so without taking the concentrated risk that comes with do-it-yourself stock picking.

If you’d rather act on MRVL itself: