DRAM contract prices climbed roughly 660% in the year through June, according to Bernstein Research data, as memory chipmakers reaped record profits on AI-driven demand.

NAND flash benchmarks tracked the same trajectory, rising approximately 660% over the trailing 12 months. Micron Technology, SK Hynix, Samsung, and Sandisk sit at the center of a market where fixed wafer capacity collided with hyperscaler, PC, and smartphone demand for inference and training workloads.

What does a 660% surge actually mean for buyers?

Bernstein Research tracks two distinct pricing series. The first covers contract DRAM used in PCs and servers, the volatile working memory behind every modern compute platform. The second tracks NAND flash, the storage standard in smartphones, SSDs, and data center arrays. Both categories roughly tripled over 12 months without a matching expansion in wafer output.

Mark Newman, memory chip analyst at Bernstein Research, framed the supply-demand gap in plain terms: "Demand is way, way ahead of supply, and that gap is wider and wider and the customers are getting more and more irate and desperate." He added: "At this point, it's starting to become a problem."

The gap shows up in customer behavior. Apple publicly cited surging memory costs as the principal driver behind a recent round of price increases across its product lines. Several PC OEMs followed with their own list-price moves.

Why are memory stocks pulling back in early July?

A coordinated pullback hit memory equities in the first two trading sessions of the month:

• Micron Technology fell 15.5% from July 1 to July 2.
• Sandisk, spun out of Western Digital, declined 23.3% over the same window.

Both names remain far above their year-ago marks. Sandisk is up roughly 3,700% over the 12 months through Thursday's close, a return that quantifies the underlying margin expansion across DRAM and NAND producers. Micron, SK Hynix, and Samsung delivered comparable, if smaller, gains over the same window.

The sell-off did not stay confined to memory. Other AI-linked trades, including upstream equipment vendors and downstream server OEMs, gave back ground in the same two-day stretch.

What could break the current pricing equilibrium?

Newman identified one political lever: if memory buyers lobby regulators to clear cheaper Chinese DRAM and NAND into Western markets, aggregate supply could expand quickly and compress margins at incumbent suppliers.

The shift is already visible. According to the Financial Times and Bloomberg, Apple has opened talks with Chinese memory vendors, including firms currently on the Pentagon blacklist, to source lower-priced parts. Apple's own public statements cited memory costs as the trigger for higher device prices.

Two supply-side responses are also under way:

• SK Hynix and Samsung have announced plans to rapidly invest in new fab capacity.
• Chinese producers continue to add mature-node output, much of it earmarked for export channels should sanctions ease.

When could the supply gap actually narrow?

The Korean capex programs will lift wafer output over time but not on a near-term schedule. Bernstein's quarterly checks show the demand-supply gap widening, not narrowing, through the first half of 2026. Even with announced investments, the gap between demand and supply continues to widen in every quarterly print.

The July pullback coincided with broader weakness across AI-linked names, so isolating the memory-specific signal from generic risk-off flows will require at least another week of order-book and contract-price data. Two consecutive weekly declines would mark a regime change; one two-day wobble will not.