Micron at a $1 Trillion Valuation. Supercycle or Cycle Top?

The question on every memory investor's mind: Micron is near $1,000 with about a trillion dollar valuation, up enormously this year. Is this a genuine supercycle, or the part of the cycle where you get hurt?

Start with the data. DRAM average selling prices rose mid-60% sequentially and NAND high-70%, with gross margin guided toward 68%. Those are numbers this industry almost never sees. Micron has begun volume shipment of HBM4 36GB 12H for Nvidia's Vera Rubin platform, with bandwidth above 2.8 TB/s and over 20% better power efficiency than HBM3E, and HBM4 is ramping twice as fast as HBM3E did. 2026 HBM is entirely sold out under multi year contracts.

Why this matters. The bull case is that this is structurally different from past cycles, because HBM is sold on long term contracts to a handful of AI customers, not the spot market that always crashed before. Supply is disciplined, with DRAM industry supply growth only around 16%. If that holds, margins stay high far longer than skeptics expect.

The risk is that memory is still memory. Every prior supercycle felt permanent right before it broke. The whole thesis gets tested at the fiscal Q3 report on June 29, where HBM pricing commentary and 2027 capacity guidance will either confirm the rerating or expose it as momentum.

My take: I respect the setup and the contract visibility is real, but I am not chasing a memory name at a trillion dollars right before earnings. I would rather see the June 29 guidance first. Not investment advice.