Micron Targets Historic 86% Gross Margin as Memory Cycle Peaks

When Micron Technology (NASDAQ:MU) issued its fiscal fourth-quarter outlook in late June, one figure stood out even in a report dense with records: a projected gross margin of roughly 86% on revenue of $50 billion, give or take $1 billion. In practical terms, management expects to spend only about 14 cents of every sales dollar manufacturing the chips it sells — an extraordinary level for an industry where margins have historically swung violently with memory pricing cycles.

The quarter in question has already concluded. Micron’s fiscal fourth quarter of 2026 ended in early September, with results scheduled for release on Wednesday, Sept. 30, after market close.

Image source: Micron.

The previous ceiling was 61%

The speed of the current escalation is striking. Micron’s fiscal 2026 third quarter (ended May 28) delivered a gross margin of 84.6%, up from 74.4% the prior quarter and 37.7% a year earlier. The company’s latest filing attributes the surge to demand from artificial intelligence data centers that is growing faster than the industry can add supply, lifting profitability across its entire portfolio.

For context, the fiscal 2018 memory boom — which Micron called a record year at the time — peaked at a 61% gross margin in its final quarter. The subsequent upcycle topped out at 47.3% in the quarter ended September 2021. In other words, Micron’s best quarters across two prior booms never came within 20 percentage points of where the business sits today.

The rest of the industry shares this history. Rival SK Hynix (NASDAQ:SKHY) closed 2018 with record annual results, including a 52% operating margin. A year later, its operating profit had collapsed 87%.

Every prior peak faded quickly

The 61% quarter marked the end of fiscal 2018. Three quarters later, Micron’s gross margin had fallen to 38.2%. One quarter after that, it stood at 28.6% — less than half the peak, roughly a year after it was set. The margin did not recover once the decline halted; two years after the peak, it was still only 34.1%.

The next boom ended even more abruptly. From its 47.3% peak, the margin held at 47.2% two quarters later. Four quarters after that, it had plummeted to negative 32.7%.

Both times, once the slide began, margins surrendered more than 30 percentage points within about a year. This is the historical backdrop against which an 86% guide must be weighed.

Can contract floors alter the pattern?

Notably, management is not forecasting that prices will keep climbing at the recent pace. The guided margin of about 86% sits just over a point above fiscal Q3’s 84.6% — a quarter that itself had jumped 10 points from the one before.

“Our fiscal Q4 gross margin outlook reflects a meaningful moderation in the rate of price increases,” Chief Financial Officer Mark Murphy said in prepared remarks for the company’s June earnings call.

What Micron argues is different this time are the contracts. The company has signed 16 customer agreements spanning three to five years. Its quarterly filing describes them as take-or-pay deals, most with either fixed pricing or contractual price floors and ceilings.

Chief Executive Sanjay Mehrotra added in the same remarks that the floor prices alone enable a gross margin “well above our peak quarterly margins in any past cycle.”

Demand may remain robust for some time. Mehrotra told analysts he expects industry supply to improve only gradually in 2028. The contracts are new, however, and no downturn has yet tested the floors.

The market appears to have taken notice. Analyst consensus points to roughly $158 in earnings per share for fiscal 2027, which began in early September. At approximately $1,070 per share as of this writing, that implies a forward multiple of about seven times earnings — the sort of valuation investors typically assign to profits they do not expect to endure.

Ultimately, it makes sense to take management at its word in both directions: the price surge that built this margin is decelerating, and the floors beneath the next downturn are stronger than anything Micron has had before. Yet the prudent approach is to value the company as if 86% represents this cycle’s peak, not its new normal. Micron has never sustained a margin peak for long, and there is little reason to assume this instance will be different.

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