Sold Out & Priced on ContractsNarrow moat

One of HBM's most valuable and unusual features, for a memory product, is how it is sold: not on the volatile spot market that governs commodity memory, but largely through long-term contracts negotiated well in advance, with pricing and volumes committed for extended periods. Micron has described its HBM as effectively sold out well into the future, with capacity spoken for by AI customers desperate to secure supply. This gives Micron something it has almost never had in its history: revenue and pricing visibility, the ability to see demand and margins locked in ahead of time rather than lurching quarter to quarter with spot prices.

This contract-based model is a real, if partial, escape from commodity dynamics. In standard memory, prices reset constantly with the spot market, so a maker has little forward certainty and no protection when prices fall; in HBM, committed contracts smooth the volatility and give Micron confidence to invest in the capacity the AI boom demands. The 'sold out' status also reflects the genuine scarcity of HBM — customers contract far ahead precisely because they fear not getting enough. The fine print: contracts run only so long, and 'sold out' is a statement about the present supply-demand balance, not a permanent condition: when contracts come up for renewal in a looser market, or if capacity catches up with demand, the pricing power behind those contracts weakens, and the visibility that feels so reassuring at the peak can become a lagging indicator of a market that has already turned. The contract model is a genuine improvement over spot commodity pricing — HBM has sold out on multi-year agreements¹, and by May 2026 Micron had take-or-pay contracts carrying about $5 billion of remaining performance obligations² — but it defers cyclicality rather than abolishing it.