Micron’s HBM Pipeline Is Full Through 2026, Yet the Stock’s 9% Correction Tells a Separate Story

Micron shares fall 8% from peak as profit-taking and insider sales trigger correction, despite pre-selling HBM capacity through 2026 and 196% revenue growth.

The disconnect between Micron’s operational reality and its stock price is growing sharper by the session. The memory maker has pre-sold its entire capacity for current and next-generation High-Bandwidth Memory (HBM) through the end of 2026, meaning new customers face a wait of roughly 18 months. That kind of revenue visibility is almost unheard of in the notoriously cyclical memory industry. Yet on Friday, the shares closed at €624.00 in Frankfurt, shedding 8.11% in a single day and slipping 8.96% from the record high of €685.40 touched on May 13.

The correction has technical fingerprints all over it. The relative strength index stood at 77.0 before the sell-off, deep in overbought territory after a rally that has delivered a 131.97% gain since the start of 2026 and a staggering 630.85% over the past twelve months. Even after Friday’s drop, the stock remains up 62.54% in the last month alone. Profit-taking was inevitable.

What has given investors pause beyond the stretched charts is a flurry of insider activity. Director Steven Gomo sold 2,000 shares on May 13, pocketing $1,574,070 near the peak. That followed an earlier disclosure that CEO Sanjay Mehrotra had sold 40,000 shares on May 1 through a pre-arranged trading plan established on January 30. The plan mechanism softens the bearish signal, but Mehrotra still holds 464,000 shares directly and 607,075 indirectly via trusts, so his personal stake remains substantial.

The fundamental backdrop, however, remains extraordinary. In Micron’s second fiscal quarter, revenue surged to $23.86 billion from $8.05 billion a year earlier, a 196% leap. GAAP net income hit $13.79 billion, translating to earnings per share of $12.07, while operating cash flow reached $11.90 billion. Gross margin expanded to 74.9%, a level that Micron, SanDisk and Broadcom have all flagged as sustainable above 75% for 2026.

Much of that margin power comes from HBM pricing and product complexity. Micron is now producing in volume a new 36-gigabyte, 12-high HBM stack co-developed for Nvidia’s upcoming Vera Rubin platform. The design delivers 2.3 times the bandwidth of HBM3E while cutting power consumption by more than 20% — a combination that directly improves data-center operating economics.

On the supply side, the market remains extremely tight. DRAM contract prices are expected to rise by 58–63% in the current quarter, and Gartner forecasts a full-year jump of 125%. Micron itself sees negligible new capacity coming online before 2028, keeping the pressure on. SK Hynix still leads in HBM, with Samsung trailing slightly, but Micron is closing the gap in customer qualifications.

An added layer of uncertainty comes from Samsung Electronics, where a strike is possible starting at the end of May. Any disruption at a competitor would only further constrict an already strained HBM and high-density memory market, where the three players control more than 90% of supply.

The heavy spending required to keep the pipeline flowing is drawing scrutiny. Micron plans to invest more than $25 billion in capital expenditure in fiscal 2026, with further increases expected in 2027. As long as HBM remains sold out, those outlays look like growth multipliers. If NAND pricing softens or the cycle turns, the focus will quickly shift to free cash flow.

The next major test comes after the US market close on July 1, when Micron reports fiscal third-quarter results. Management has guided for record revenue of $33.5 billion and adjusted earnings per share of $19.15. Analysts are modelling $18.97 on average, a mark the company has beaten in each of the past four quarters. With so much future profit already baked into the stock price, the July report will need to show not just a headline beat but continued evidence that HBM demand — and pricing power — will extend beyond the current visibility window.