MU's HBM Revenues Surpass $1 Billion: Will the Momentum Persist?

Micron's HBM (high bandwidth memory) revenues surpassed $1 billion in Q2 FY25, fueled by strong demand from AI and high-performance computing sectors; its HBM3E variants are sold out for 2025. The company is now focused on securing 2026 delivery agreements and is developing HBM4, slated for production in 2026, which promises a 60% bandwidth increase over HBM3E. Micron anticipates Q3 fiscal 2025 revenues of $8.80 billion, representing a 29.33% year-over-year increase, while shares of MU have gained 31.8% year-to-date.

Analysis

Micron Technology (MU) is experiencing significant momentum in its High Bandwidth Memory (HBM) segment, evidenced by HBM revenues surpassing $1 billion in the second quarter of fiscal 2025, a 50% sequential increase, driven by robust demand from AI, high-performance computing, and hyperscalers. This strong demand for Micron's HBM3E and HBM3E-12H variants, noted for power efficiency and higher capacity, has led to the company's entire HBM supply for calendar 2025 being sold out, prompting a shift to securing 2026 delivery agreements. A key factor bolstering Micron's market position is its designation as a key supplier for NVIDIA's (NVDA) GeForce RTX 50 Blackwell GPUs, with Micron's HBM3E chips integrated into NVIDIA's GB200 and GB300 systems. Looking forward, Micron is developing HBM4, slated for volume production in 2026, which aims to deliver over 60% more bandwidth than HBM3E, targeting an HBM total addressable market estimated at over $35 billion for calendar 2025. The company projects third-quarter fiscal 2025 revenues of $8.80 billion (+/-$200 million), closely aligning with the Zacks Consensus Estimate of $8.81 billion, which indicates a 29.33% year-over-year growth. Despite a consolidated HBM market with competitors like SK Hynix and Samsung, and TSMC's (TSM) collaboration with SK Hynix on HBM4, Micron's shares have appreciated 31.8% year-to-date, outperforming its industry. From a valuation perspective, MU trades at a forward price-to-sales ratio of 2.84x, below the industry average of 3.53x. Fiscal 2025 earnings estimates project substantial year-over-year growth of 433% and have been revised upward, although fiscal 2026 earnings estimates have seen a downward revision in the past 60 days.

Key Decisions for Investors

• Investors should closely monitor Micron's execution on its HBM4 development roadmap and the 2026 production ramp, as successful delivery is critical for sustaining growth and market share against intensifying competition, particularly from the SK Hynix-TSMC alliance.
• The current robust demand, highlighted by the sold-out 2025 HBM supply and the strategic NVIDIA partnership, underpins a strong near-term outlook; however, the recent downward revision of fiscal 2026 earnings estimates warrants careful attention to future company guidance and market dynamics.
• Consider Micron's current valuation, with a forward price-to-sales ratio below the industry average and significant projected FY2025 earnings growth, but weigh these factors against the inherent cyclicality of the memory market and the evolving competitive landscape in the HBM space.