Micron’s Twin Catalysts: HBM4 Speed and US Fab Ramp Fuel Record Run Ahead of Earnings

Micron’s HBM4 production ramps twice as fast as HBM3E, while 1-alpha DRAM goes commercial in Virginia. Stock up 670% in 12 months.

The memory chip giant is firing on two fronts. While Micron Technology has flipped the switch on high-volume production of 1-alpha DRAM at its expanded Virginia facility, the company’s next-generation HBM4 stack is accelerating faster than anticipated — a one-two punch that has sent the stock surging over 140% year-to-date and more than 670% over the past twelve months. The shares closed at €647 on Friday, roughly 5.6% below the all-time high of €685.40 set on May 13.

HBM4 Ramps at Double the Speed

Speaking at the J.P. Morgan Technology Conference, CEO Sanjay Mehrotra delivered a clear message: the AI memory boom is intensifying, and supply cannot keep pace with demand across HBM, DRAM, and NAND. The company expects tight conditions to persist well beyond 2026, citing structural factors such as shrinking bit-density gains, larger die sizes for HBM that reduce wafer yields, and lengthening construction timelines for new fabrication plants.

The real headline was HBM4. The 36-gigabyte, 12-layer stack now exceeds 11 Gb/s per pin and delivers over 2.8 TB/s of bandwidth — a more than 20% efficiency improvement over its HBM3E predecessor. Crucially, the production ramp is running at twice the speed of last year’s HBM3E launch, and yields are improving. Micron has already kicked off development of HBM4E, with the first JEDEC-compliant parts slated for series production in 2027.

Virginia Production Milestone

On May 22, Micron began commercial manufacturing of 1-alpha DRAM at its expanded Manassas, Virginia site. The company poured over $2 billion into the upgrade, quadrupling wafer output of DDR4 and LPDDR4 memory. Unlike the chips destined for consumer gadgets, these units target automotive, defense, aerospace, and medical applications.

The project benefited from CHIPS Act funding and has created roughly 400 direct jobs, with an expected total of more than 3,100 positions across the region when indirect effects are included. Separately, Micron has kicked off commercial production at new facilities in India, further diversifying its global manufacturing footprint.

Record Cash Flow and Analyst Optimism

Mehrotra declared the current quarter on track to deliver the strongest balance sheet in company history, with free cash flow reaching another all-time high. All three major rating agencies have upgraded Micron’s credit.

For the third fiscal quarter ending in June, Micron guides for revenue of around $33.5 billion, a gross margin of approximately 81%, and earnings per share of $19.15. The analyst consensus sits at $18.97 — which would still represent a nearly 997% year-over-year jump. The spread of Q3 revenue estimates, ranging from $33.7 billion to $40.9 billion, underscores the genuine uncertainty over the pace of AI infrastructure spending.

Micron has beaten Wall Street estimates in each of the last four quarters. In fiscal Q2 2026, it posted revenue of $23.86 billion and the largest sequential revenue leap in its history. The quarterly dividend was raised by 30% to $0.15 per share.

Analysts remain bullish. Citigroup has a price target of $840, while DA Davidson sits at $1,000. The relative strength index currently hovers near 36 — technically oversold territory for a stock that has still gained over 55% in the last month alone, suggesting a potential consolidation period ahead of the earnings report on June 24.

Capacity Expansion and Competitive Dynamics

Micron is investing aggressively to close the gap with SK Hynix, the current HBM market leader, followed by Samsung. All three are qualifying their next HBM generations with hyperscalers and AI chip designers.

The company’s capital expenditure plan for fiscal 2026 calls for $20 billion to $25 billion, with a large portion flowing into the planned mega-fab in New York — a project that could eventually swallow up to $100 billion. A new Idaho facility is scheduled to come online in mid-2027, and a NAND plant in Singapore is expected to produce its first wafers in the second half of 2028. That timeline means structural supply bottlenecks could persist until at least 2028.

Risks on the Horizon

A preliminary tariff agreement involving Samsung could help stabilize global HBM4 supply chains. But rising DRAM and NAND exports from Chinese manufacturers pose a growing risk of price pressure in the broader market. With the stock trading just below its peak and the RSI flashing oversold, all eyes are on Q3 numbers — and whether Micron can deliver another beat that justifies its stratospheric valuation.