Memory Chips Are Still Hot. Why Are the Stocks Already Cooling?
Prices are rising and earnings are setting records, yet investors have started to worry about the next cycle. To place the memory supercycle, read the signals that move before earnings do.
Record earnings, so why is the market uneasy?
Samsung Electronics said on Oct. 7 that preliminary third-quarter 2026 operating profit came to 107.4 trillion won, about 8.8 times a year earlier. Its shares fell after the release. Market expectations had been higher than the reported figure.
Micron is a similar case. It reported fiscal fourth-quarter 2026 revenue of $54.23 billion, about 4.8 times the year-earlier level. Even so, investors' attention has already moved to the next quarter and beyond.
That is how the memory industry works. The best earnings do not necessarily bring the best share prices. The market weighs less the profit of today than how long today's high profit can last.
The peak in prices, the peak in profit and the peak in the stock are different
A conceptual diagram, not a reproduction of actual stock or price charts. The order of the peaks is not fixed.
Profit can keep rising even as memory price gains slow. If high selling prices hold and volumes grow, revenue and operating profit can improve further.
Shares move differently. Even if prices keep rising, slower gains and expected supply growth can force an earlier adjustment to profit forecasts and valuations.
The current debate starts from the fact that these three clocks are running at different speeds.
Prices are rising, but customers are not buying more
TrendForce forecasts fourth-quarter 2026 contract prices, quarter over quarter:
- Commodity DRAM: up 10% to 15%
- NAND Flash: up 15% to 20%
Source: TrendForce, Sept. 30, 2026. These are forecasts, not reported results.
There is an important split. AI server memory still draws strong purchasing demand, while consumer memory is meeting more price resistance.
Enterprise SSD prices are expected to firm further as cloud service providers concentrate their purchases. In consumer NAND wafers, by contrast, purchases have stalled under high prices and inventory burdens.
Within the same industry, two different business cycles have begun.
New competitors are already taking share
China's catch-up is no longer a distant possibility.
According to Counterpoint Research, China's CXMT reached a 10% share of global DRAM revenue in the second quarter of 2026, up 6 percentage points from 4% a year earlier. Over the same period, the combined share of Samsung, SK hynix and Micron fell from 94% to 87%.
In NAND, China's YMTC recorded a 14% revenue share in the second quarter of 2026.
It is hard to argue that they are about to overturn leadership in cutting-edge HBM. But in commodity DRAM and NAND, expanding Chinese supply could weaken pricing power over time.
For long-term investors, the question is not only how fast Chinese makers catch up in HBM. It is also how much Chinese low-cost supply will squeeze the commodity memory profits of the Big Three.
Why 2027 and 2028 matter
Micron's fiscal 2026 capital spending reached $27.37 billion. That suggests the current shortage is prompting more investment in production capacity.
But chip plants do not add output the moment money is spent. Construction, tool installation and yield stabilization all take time.
So in 2026 the shortage continues and prices rise. In 2027 and 2028, past investment decisions could turn into actual supply growth. How much AI demand will have grown by then remains uncertain.
Whether oversupply arrives depends less on the existence of new fabs than on whether added output exceeds added demand.
The next numbers to check
| Indicator | Positive signal | Warning signal |
|---|---|---|
| DRAM and NAND contract prices | Gains continue, no reversal | Declines across major product lines |
| HBM and server revenue | High growth, margins held | Slowing order growth |
| Customer inventory and orders | Long-term contracts, rising shipments | Postponed contracts, inventory surge |
| New fab capacity | Expansion matched to demand | Supply exceeding demand |
| China market share | Growth centered on commodity chips | Penetration into high-value products |
Not every indicator needs equal weight. In the short run, contract prices and customer orders matter most. Over the medium to long term, the timing of new capacity and the competitiveness of Chinese rivals matter more.
Insight Times Editorial Desk
