The Old Memory Cycle Is Dead: Micron's Fully Booked HBM4 Pipeline and $100 Billion Market Target Tell a New Story

Micron's entire HBM4 capacity for 2026 is booked, with long-term contracts ending price volatility. Analysts see structural change, driving shares to new highs despite oversold RSI.

The feast-or-famine swings that defined the memory chip industry for decades may finally be history. Micron Technology has sold every last gigabyte of its HBM4 production capacity for 2026, and long-term contracts stretching three to five years are locking in prices with no room for the old quarterly haggling. Shares have responded accordingly, climbing to a new 52-week high of EUR 914.20 — a roughly 915% gain over the past twelve months. Yet the Relative Strength Index sits at 32, a level that usually signals oversold conditions, raising the question of whether the market has fully digested this structural shift.

Melissa Fairbanks of Raymond James, ranked among the top 2% of Wall Street analysts, returned from visits to Samsung, SK Hynix and Kioxia convinced that the rules have changed. The discipline on capacity expansion, she argues, is unprecedented, and the move toward multi-year take-or-pay agreements has effectively taken supply volatility off the table. Fairbanks more than doubled her price target from $530 to $1,100, maintaining an Outperform rating. Her call is built on her expectation that gross margins will settle between 50% and 60% — permanently above historical peak levels for the industry.

The numbers behind that conviction are staggering. Micron now sees the addressable HBM market reaching $100 billion by 2028, a milestone it originally expected two years later. The reason: in modern AI systems, memory bandwidth has become the performance bottleneck, not raw compute. HBM4, Micron’s sixth-generation high-bandwidth memory, is already in mass production with 36 GB stacks built on a 12-layer architecture, designed specifically for NVIDIA’s Vera Rubin platform. CEO Sanjay Mehrotra has confirmed the company can only fill 50% to 65% of its key customers’ medium-term demand — a textbook definition of scarcity.

For the next generation, Micron is tearing up its old playbook. HBM4E is being developed at twice the speed of HBM3E’s ramp, and for the first time the company will outsource the base die to TSMC, using TSMC’s foundry alongside its own 10 nm sixth-generation (1-gamma) EUV lithography. The partnership is a strategic pivot as workloads shift from training to inference, where quality and yield become even more critical. Micron’s entire HBM4 output for 2026 is already spoken for, and management is betting the TSMC alliance will ensure the same for HBM4E.

Wall Street is not unanimous on the valuation, however. At one extreme, UBS’s Timothy Arcuri raised his target to $1,625 — a 204% increase and the highest on the Street. The consensus estimate stands at $804, meaning the stock already trades above the average analyst view. JPMorgan has singled out Micron as a major beneficiary of the AI infrastructure buildout, noting that shortages in HBM, optical networking components, and data center cooling systems are among the most acute in the supply chain. The debate over whether the stock has run too far has also revived talk of a stock split — Micron has split its shares three times before, most recently in 2000 — but management has yet to present a formal proposal.

The next reality check comes on June 24, when Micron reports fiscal third-quarter results. The company’s own guidance from the prior quarter called for revenue of roughly $33.5 billion and adjusted earnings per share of about $19.15. Analysts have since lifted their revenue estimate to $33.8 billion, a 263% year-over-year surge, and the full-year 2026 EPS consensus sits at $58.87, underpinned by high-margin HBM contracts and the transition to DDR5 and PCIe Gen 6 memory. With supply tight and demand accelerating, the old question about inventory gluts has been replaced by a new one: Can Micron keep up with orders, and has the market already priced in a future that has only just begun to unfold?