Why are Micron’s profits so high?

An AI data center needs more than GPUs. High-bandwidth memory (HBM) rapidly feeds data to GPUs, server DRAM holds the data servers are working with, and SSDs provide longer-term storage. Micron supplies all three, so spending on AI infrastructure can translate into revenue across several product categories. [1][3]

Cloud Memory revenue rose from $13.769 billion to $16.283 billion, an increase of $2.514 billion, or 18.3%, from the previous quarter. Core Data Center revenue rose from $11.524 billion to $18.002 billion, up $6.478 billion, or 56.2%. Together they generated $34.285 billion, about 63% of total sales. Their $8.992 billion increase represented approximately 70% of Micron’s total sequential revenue increase. [1]

FY2026 Q3FY2026 Q4

Cloud Memory+18.3% QoQ

Q3

13.769

Q4

16.283

Core Data Center+56.2% QoQ

Q3

11.524

Q4

18.002

The two units accounted for about 70% of the total revenue increase. [1]

Micron said HBM revenue grew faster than overall revenue, but did not disclose its dollar amount. Data-center SSD revenue approached $10 billion, more than ten times the year-ago level. Revenue from the data-center business units is not the same as HBM revenue. Product revenue and business-unit revenue can overlap, so these figures should not be added together. [3]

Larger AI models and more simultaneous users mean more data for processors to handle. This requires fast HBM as well as greater server-memory capacity. Micron said that longer context windows and more simultaneous users are increasing data-center demand for memory and storage. [3]

Supply cannot expand overnight. Making HBM involves stacking and connecting DRAM chips and using advanced packaging. The process is complex, and production capacity allocated to HBM competes with capacity for other DRAM products. New fabs need cleanroom space, installed equipment and stable manufacturing yields before they can produce at scale. Supply therefore tends to lag behind rapid increases in demand. [2][3]

Higher prices played a particularly large role this quarter. Micron said DRAM revenue rose 27% sequentially: bit shipments rose by a mid-single-digit percentage and prices by a high-teens percentage. NAND revenue rose 42%, with bit shipments up approximately 10% and prices approximately 30%. These are the approximate changes reported by the company. It did not separately disclose the exact dollar contributions of prices, shipments and product mix to revenue growth. [3]

DRAM

Selling price

High teens ↑

Bit shipments

Mid-single digits ↑

Revenue

+27%

NAND

Selling price

Approx. 30% ↑

Bit shipments

Approx. 10% ↑

Revenue

+42%

Price and shipment changes are approximate; product mix also affects reported revenue growth. [3]

AI investment increased demand while supply could not expand as quickly, supporting higher prices. Micron was therefore able to sell more products at higher prices. If demand slows or new supply arrives faster than expected, the same market mechanism can put prices under pressure.

For customers, a shortage means more than paying a higher price: server production and data-center openings can be delayed. Multi-year agreements help customers secure products and volumes, while giving Micron a clearer view of future demand to guide investment in factories and equipment. [3]

As of September 30, Micron said it had signed 26 strategic customer agreements with multi-year take-or-pay volume commitments. About three-quarters of the company’s estimated revenue from those agreements through 2030 had a defined pricing framework; most of the revenue covered by that framework was subject to price floors and ceilings. Prices for the remaining quarter of that estimated revenue are renegotiated periodically based on market conditions. These percentages refer to estimated agreement revenue, not the number of agreements. [3]

The 10-K disclosed approximately $134 billion in remaining performance obligations (RPO) as of September 3, 2026. These obligations relate to contracts that have yet to be fulfilled and are calculated using committed volumes and minimum prices. Agreements without a fixed price or price band are excluded. The company expected approximately one-quarter of those obligations to be recognized as revenue over the next 12 months. Management’s approximately $150 billion figure, reported on September 30, refers to a later date. The two figures should therefore be kept distinct. [2][3]

Customer deposits support the commitments but are not profits already earned. The company classified the $12.3 billion of customer deposits received in Q4 as cash flows from financing activities, excluding them from operating cash flow and company-defined free cash flow. Deposits may be returned later in the contract term if minimum purchase requirements are met. [3]

Long-term agreements can reduce uncertainty for both buyer and manufacturer, but they do not eliminate the memory cycle. Prices for volumes outside these agreements, future contract terms, customer demand and new supply can all change. Those commitments must still translate into product deliveries, recognized revenue and profit.

Higher revenue and a higher gross margin combined to lift profit. GAAP gross margin rose from 84.6% to 86.8%, while operating income increased from $33.318 billion to $43.751 billion, a gain of $10.433 billion. Micron attributed margin improvement primarily to higher prices and improved manufacturing performance. The 87.0% gross margin cited in its prepared remarks is a non-GAAP measure, distinct from the 86.8% GAAP figure used here. [1][3]

Operating cash flow was $43.973 billion and cash purchases of property, plant and equipment were $11.110 billion. Company-defined adjusted free cash flow was $33.199 billion after adjustments including asset-sale proceeds and government incentives. Substantial cash remained after investment, but this measure differs from simply deducting cash purchases of property, plant and equipment from operating cash flow. [1]

For Q1 of fiscal 2027, Micron forecast $60–63 billion of revenue and approximately 85.95% GAAP gross margin. Revenue is expected to rise from Q4, but margin is expected to fall. Management explained that increased manufacturing incentive compensation was included in the cost of Q4 inventory and would mainly be recognized in cost of sales when that inventory is sold in Q1. Higher allocated product costs can reduce gross margin even as sales grow. [1][3]

Management expected gross margin to reach its low point for the fiscal year in Q1. It also projected that memory supply would be more constrained relative to demand in 2027–2028 than in 2026. These are management expectations, not reported results. The company expects initial wafer output at Idaho ID1 in mid-2027 and ID2 in late 2028, with further increases in production taking additional time. If industry-wide expansion exceeds demand, prices and margins can still come under pressure. [3]