Micron approaches $1tn as UBS sees a path to $1.8tn over 12 months

Timothy Arcuri lifted his price target to $1,625 from $535 on the back of long-term HBM supply agreements that, in his read, compress the boom-bust memory cycle into something closer to a structural duopoly.

Micron Technology shares rose as much as 19% on Tuesday after UBS analyst Timothy Arcuri more than tripled his price target to $1,625 from $535, implying a market value approaching $1.8 trillion if the call holds up over the next 12 months.

The new figure is the highest among the 46 analysts covering the stock and represents one of the most aggressive single-day re-ratings of a mature semiconductor company on record.

The argument behind Arcuri’s call is more interesting than the number itself. UBS’s thesis is not that AI demand will lift memory prices indefinitely, which is the standard cyclical-upside argument. It is that long-term supply agreements between memory makers and their largest customers, particularly the hyperscalers and Nvidia, now cover enough of the market to compress memory’s traditional boom-bust cycle into something closer to a smooth utility-style earnings profile.

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UBS estimates that up to 30% of global DDR memory volumes are already tied to pricing agreements set slightly below current spot levels, exchanging some near-term upside for years of visibility.

If that pattern holds, Micron starts to look less like a cyclical commodity producer and more like an AI-infrastructure annuity. UBS expects Micron earnings per share to exceed $100 every year through at least 2029. At current valuations that math is enough to sustain a market cap closer to $1.8tn than to the roughly $1tn the company is trading near today; the trillion-dollar level was itself unimaginable as recently as 12 months ago.

The HBM picture is more textured than the headline suggests. SK Hynix has been the runaway winner of the cycle so far, holding around 70% of HBM4 supply for Nvidia’s flagship Vera Rubin platform with Samsung taking most of the rest. Micron was initially locked out of the flagship VR200 NVL72 configuration.

The company has since secured a position supplying HBM4 for Rubin CPX, the mid-range inference-oriented accelerator within the Rubin family, and started volume shipment of its 36GB 12H HBM4 stacks earlier this quarter.

UBS’s thesis effectively presumes Micron will continue moving into the higher-end HBM4 supply tier over the next 18 months as SK Hynix and Samsung struggle to expand fast enough to absorb demand.

The competitive comparison is worth pausing on. SK Hynix crossed $1 trillion in market cap on Wednesday in Seoul; it now sits around 57% of the global HBM market by share. Samsung is at roughly 28%; Micron has been at the smaller balance. UBS’s call is, in effect, that the smaller player benefits asymmetrically as the market expands because customers want a third source for risk reasons, even if pricing inside that third-source tier is lower than at the leader.

The thesis is plausible but not automatic; it assumes Nvidia’s Rubin order book actually consumes the HBM volume forecast and that SK Hynix does not capture the entire upside.

The wider memory complex moved on Tuesday with Micron. SanDisk gained 8% and Western Digital 10%, both on the read that long-term agreements are spreading into NAND and traditional storage. The pattern UBS is describing is, if real, a category change rather than a one-stock event.

Micron’s next earnings report is due in late June. Capacity-utilisation guidance and any disclosed expansion of its Nvidia HBM4 footprint are the two figures most worth watching against the new UBS target.