Micron’s Biggest Risk Is Written In Its Construction Budget

Micron is spending record cash flow on new fabs whose output arrives into the same year its own outlook expects memory supply to improve.

Micron Technology (MU) has gained about 660% over the past year while the industry cannot make memory fast enough. The number that should unsettle a holder is not the margin. It is what the company is committing to new plant: approximately $27 billion of capital spending in fiscal 2026, net of anticipated government incentives.

Fiscal 2027 Will Spend Fiscal 2026’s Whole Budget In Under Three Quarters

Free cash flow is what is left after capital expenditure, and Micron’s $18.3 billion of free cash flow in fiscal Q3 2026, a quarterly record, arrived only after $7.1 billion had already gone into the plant. Over the trailing twelve months revenue was $90.3 billion; against that sits a fiscal 2026 plant budget of roughly $27 billion, guided higher still in fiscal 2027, with every quarter above the roughly $10 billion planned for fiscal Q4 2026. Management nonetheless forecasts free cash flow to increase substantially again in fiscal Q4. What it buys: the ID1 and ID2 DRAM fabs in Idaho, the first fab of a New York cluster whose construction began in January 2026, a newly acquired site at Tongluo in Taiwan, and an advanced packaging facility in Singapore.

Construction Is More Than Half The Fiscal 2027 Capex Increase

More than half of the year-over-year increase in fiscal 2027 capital spending is construction as Micron pulls in clean room capacity. A clean room already rising in Idaho or New York is not a fast lever: by the company’s own account, greenfield fab projects are large, complex, and time-consuming. Its own framing is that memory industry supply growth depends on that greenfield expansion; it expects industry supply to improve gradually in 2028 but says it has no line of sight as to when memory supply will catch up with increasing demand. ID1 is due for its first wafer output in mid-calendar 2027 and ID2 in late calendar 2028. Micron can pay for all of it, having closed fiscal Q3 2026 with $24.4 billion of net cash. A balance sheet of that kind is common to the businesses in the Trefis High Quality Portfolio.

Micron’s Largest Agreements Carry Both A Floor And A Ceiling

How worried should a holder be? Less than the capital line alone suggests. Micron has signed 16 strategic customer agreements, take-or-pay contracts typically running five years from calendar 2026, covering roughly 20% of its DRAM volume and a third of its NAND volume. The largest of those agreements generally carry a ceiling price for existing products at the current CQ2 market price, alongside a floor. Management says that even at the floor prices under those contracts, margins should run significantly above prior peak margins.

The rest of the volume is uncovered, and NAND is where a rival’s supply is showing up: Yangtze Memory Technologies has broken into the global top three in NAND shipments, finishing ahead of Micron with 14% of the global total in the second quarter, according to Counterpoint Research. The tell is the construction line: the further it climbs through fiscal 2027, the more of today’s margin is buying tomorrow’s supply. The options market prices MU implied volatility at 66, the 45th percentile of its trailing one-year range – not the elevated reading that would signal an unusually large expected move.

A Fab Calendar Now Sets This Timetable, Not A Holder’s

Micron’s next few years are being poured in concrete on a schedule no holder controls. A rules-based basket such as the Trefis High Quality Portfolio spreads that kind of timing risk across businesses whose outcomes are not set by one construction calendar. That portfolio has a track record of outpacing the three major indices – the S&P 500, S&P Mid-cap, and Russell 2000.