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    MU
    Earnings call· Aug 2025(Q4 FY25)

    MICRON TECHNOLOGY INC MU

    Sep 23, 2025 Source

    Executive summary

    Micron Technology Q4 FY25 — Strong HBM Performance and Margin Expansion

    Micron Technology delivered a strong Q4 FY25, driven by robust HBM performance and significant margin expansion, with gross margins surpassing mid-FY22 levels. The company's strategic focus on high-value data center products, including HBM and high-capacity SSDs, is reshaping its portfolio and driving profitability. While the NAND business saw bit declines and a strategic exit from mobile NAND, the overall industry is tightening, particularly in DRAM, setting a positive outlook for pricing and margins.

    Highlights

    6
    • HBM3E product offers highest performance and 30% lower power consumption than competitors.

    • HBM4 performance exceeds JEDEC specs with >11 Gbps speed and 2.8 TBps bandwidth, setting a new bar.

    • Q4 FY25 gross margin was 120 bps higher than the mid-August update, now above mid-FY22 levels.

    • DRAM margins are higher than mid-FY22, and operating margin is the highest since November 2018.

    • The 1-gamma DRAM node achieved mature yield and first revenue shipments this quarter, becoming a primary bit growth driver for FY26.

    • The NAND business completed its second consecutive year of positive free cash flow.

    Concerns

    2
    • NAND bits were down in Q4 FY25 and are expected to be down again in the guide, largely driven by ASP.

    • The mobile NAND market's competitiveness led to a strategic exit from the segment due to insufficient ROI.

    Guidance & targets

    7
    CategoryTargetConfidence
    CapEx
    $13 billion net
    high materiality
    High
    CapEx
    $18 billion net
    high materiality
    High
    Gross margin
    up relative to first
    medium materiality
    High
    HBM share
    in the vicinity of our DRAM supply share
    medium materiality
    High
    HBM share
    higher share in HBM compared to calendar '25
    medium materiality
    High
    HBM supply
    sell out that supply
    medium materiality
    High
    Net interest
    flip to the income
    medium materiality
    High

    Operational metrics

    16
    CapEx
    $13B
    FY25

    Stated as the net CapEx for fiscal year 2025.

    CapEx
    $18Bup from $13B in FY25
    FY26

    Stated as the net CapEx for fiscal year 2026.

    HBM share
    vicinity of DRAM supply share
    CQ3 2025

    Expected HBM market share relative to overall DRAM supply share.

    HBM share
    highervs CY25
    CY26

    Expected HBM market share for the full calendar year 2026.

    Gross margin
    above mid-FY22 levels120 bps higher than mid-August update
    Q4 FY25

    Reported gross margin for the quarter.

    DRAM gross margin
    highervs mid-FY22 period
    Q4 FY25

    DRAM-specific gross margins.

    Operating margin
    highest since November '18
    Q4 FY25

    Operating margin for the quarter.

    DRAM front-end ex-HBM cost downs
    slightly better than high single digits
    FY25

    Cost reduction for DRAM front-end, excluding HBM.

    NAND cost downs
    mid-teens
    FY25

    Cost reduction for NAND.

    DRAM with HBM cost downs
    low single-digit percentage
    FY25

    Cost reduction for DRAM, including HBM.

    DDR4 + LP4 revenue share
    low single-digit percentage
    Q4 FY25

    DDR4 and LP4 combined revenue as a percentage of total business.

    HBM and high-capacity DIMMs and LP for data center revenue
    $10B
    FY25

    Combined revenue from these high-value data center products.

    HBM3E performance
    highest performance
    current

    Micron's HBM3E product capabilities.

    HBM4 performance
    highest performance
    current

    Micron's HBM4 product capabilities, exceeding JEDEC specs.

    Enterprise SSD capacity
    60TB, 102TB, 122TB, 245TB
    current/future

    Range of high-capacity enterprise SSDs being used or announced.

    Net interest
    positiveflip to income
    Q1 FY26

    Expected net interest income for the next quarter.

    Industry KPIs

    4
    MetricValueDetails
    Ai data center revenue$10BUSD
    Inventory channel inventorylow below targets
    Node platform ramp schedule1-gamma
    End market segment revenue mixData center more than half%

    Product announcements

    3
    ProductTypeDetails
    1-gamma DRAM nodemilestone
    HBM4milestone
    High-capacity Enterprise SSDsexpansion

    Deals & partnerships

    1
    Mobile NAND marketExit from the mobile NAND market segment.

    Micron decided to exit the mobile NAND market due to the pricing expectations and competitiveness not lending itself to robust ROI over time. This allows focus on higher-profitability areas like data center SSDs.

    Capital programs

    1
    Idaho Fabin construction

    Benefit: wafer production starts

    New fab in Idaho, with wafer production starts expected in the second half of 2027.

    Risks & headwinds

    3
    NAND bit declineQ4 FY25

    bits down in the quarter

    Mitigation: Structurally brought down wafer outs, slowing node transitions, pacing new node ramps, low CapEx, working down inventories, focusing on data center SSDs.

    Mobile NAND market competitivenesspast several years

    did not lend itself for robust ROI over time

    Mitigation: Decision to exit the managed NAND business to concentrate resources on higher ROI areas like data center SSDs.

    HDD segment shortagescalendar '26

    shortages on that side from the HDD segment of the market

    Mitigation: Hyperscalers will need significantly more storage capability for AI server deployment, driving increased usage of NAND SSDs.

    What to watch in Q1 FY26

    5

    NAND industry improvement

    next quarter and beyond
    Currentbits down in Q4 FY25
    Targetimproving and getting tighter

    Why it matters

    Indicates a recovery in the NAND market, driven by AI server demand and HDD shortages, impacting Micron's data center SSD business.

    I think the NAND industry will improve. The improvement in the DRAM business is definitely ahead from a time perspective in terms of being tight. NAND is improving and getting tighter, but DRAM is tight already today and getting even tighter going forward.

    Q&A highlights

    6

    Asked about NAND bit performance in Q4 and the guide, contrasting with peers' bit growth expectations, and if capacity additions are planned. Also sought clarification on CapEx guidance ($13B to $18B) and if the increase is primarily for DRAM.

    Sumit Sadana stated Q4 NAND bits were noise, but hyperscalers will need more storage for AI servers in CY26 due to HDD shortages, benefiting Micron's data center SSDs. Mark Murphy confirmed CapEx of $13B net in FY25 and $18B net in FY26, with the vast majority for DRAM construction and equipment.

    We're saying that we're going to go from $13 billion to $18 billion net in '25 and net approximately $18 billion in '26. And the vast majority of that is for DRAM, construction and equipment.

    asked by Thomas O'Malley · answered by Mark Murphy

    2 min read6 chapters

    Detailed Narrative

    01

    NAND Industry Outlook and Strategic Focus

    The NAND industry is projected to improve, driven by significant storage demand from hyperscalers for AI server deployment, partly due to shortages in the HDD segment. Micron expects to capitalize on this trend through its strong position in the data center SSD market, where it has achieved record market share with a robust product portfolio. The company has strategically reduced NAND wafer output, slowed node transitions, and maintained low CapEx to manage inventories, while exiting the mobile NAND market to focus on higher ROI opportunities.

    02

    HBM Leadership and Market Positioning

    Micron is aggressively ramping its HBM share, targeting to be in the vicinity of its overall DRAM supply share by CQ3 2025 and achieve higher HBM share in CY26. The company views HBM as a high-ROI business with stable pricing and long lead times. Micron asserts its HBM3E product is best-in-class with 30% lower power, and its HBM4 product demonstrates the highest performance among competitors, exceeding JEDEC specifications with speeds over 11 Gbps and 2.8 TBps bandwidth.

    03

    DRAM Market Tightness and Margin Expansion

    The DRAM market is currently tight and is expected to become even tighter in 2026, fueled by robust demand and limitations on supply growth. This tightness, combined with an improved product mix towards data center and higher performance requirements, is enabling pricing increases across all market segments. Micron's Q4 FY25 gross margin surpassed mid-FY22 levels, and its operating margin reached its highest point since November 2018, indicating strong financial performance.

    04

    Technology Transitions and Cost Structure

    Micron successfully achieved mature yield and initiated first revenue shipments for its 1-gamma DRAM node this quarter, positioning it as the primary driver for bit growth in FY26. The company's cost reduction efforts for FY25 included improvements slightly better than high single digits for DRAM front-end (excluding HBM) and mid-teens for NAND, alongside low single-digit percentage reductions for DRAM inclusive of HBM.

    05

    AI Market Evolution and Product Portfolio Diversification

    The evolving AI market, characterized by diverse use cases and memory-bound inferencing workloads, necessitates optimized architectures for increased memory capacity and bandwidth. Micron is addressing these needs with its comprehensive portfolio, including HBM, industry-leading GDDR7, and LPDRAM for data centers. This strategy aims to deliver high-value solutions across the expanding range of customer architectures, ensuring the company benefits from the growing AI landscape.

    06

    High-Capacity Enterprise SSDs Driving Demand

    Average capacities for enterprise SSDs are escalating rapidly, with AI servers utilizing the highest available capacity drives. Micron has announced 122 terabyte and 245 terabyte drives, building on previous 60 terabyte and 102 terabyte offerings. The company anticipates a meaningful uptake of these high-capacity drives, which will significantly increase average capacities per server and contribute to positive outcomes in the NAND market.

    AI-generated summary of the company’s earnings call. Not investment advice.