Bottleneck Capital
Long/Short Investor, Technology, Media & Telecom
Micron is earning scarcity rents in memory, but China's CXMT has put a clock on how long that pricing window lasts. CXMT says its G5 DRAM process is in mass production with at least 50% more gross dies per wafer than G4; capacity and yield are undisclosed, so it is not an immediate supply call. Own the shortage, but underwrite the supply response. x.com
Micron is the US-listed way to own a memory shortage buyers expect to last through 2028. Samsung locked 60-70% of its memory capacity into five-year contracts where prices can fall at most about 5% a quarter but rise 10-20% with no ceiling, and buyers signed anyway, valuing secure supply over price protection. Micron's strategic customer agreements also mostly run five years. Nomura kept Buys on Samsung and SK hynix, both about 37% off their highs at roughly 3x 2027 earnings. x.com
Micron's China sales risk shifting to CXMT as its domestic DRAM capacity grows. Mainland sales more than tripled to $8.3B during the shortage, mostly standard DRAM that CXMT already makes; including Hong Kong, Micron booked $14.6B, 11% of FY2026 revenue. CXMT already has roughly a third of Micron's revenue, and Reuters said its server DDR5 was priced above Samsung's. Micron is the only American maker among the three ahead of CXMT; buyers drawn by supply could switch as it expands. x.com x.com
Prepaid contracts and demand-paced fabs weaken a broad 2028 memory-glut case. SK hynix says over half its 2027-28 capacity is signed with deposits; 'sold out through 2029' includes negotiations. Samsung targets 60-70% contracted capacity. Micron's three projects begin output in 2H28; tooling follows demand. Reuters says CXMT's 20-30%-yield HBM3E may ship this year to export-restricted Chinese buyers, but performs like older HBM3. Commodity DRAM risks 2028-29 oversupply; NAND could ease in 2H27. … Show more
CXMT's planned DDR5 launch by year-end adds near-term Chinese competition for DRAM, which is not great for Micron and SK hynix. The accompanying TrendForce graphic says CXMT's DDR5 server RDIMM is due by year-end; this sharpens the earlier concern that new supply will erode memory tightness. x.com
Hynix's sold-out memory supply supports expectations for big numbers from Micron, still trading at 5x forward earnings. Hynix says its HBM and DRAM chips are sold out until 2029 and a chip shortage is likely to continue into 2030. Big numbers and capital return are expected after Micron reports in December. x.com
SK hynix's sold-out memory capacity bodes well for Micron because it sells into the same shortage. SK hynix says its DRAM and HBM are effectively sold out through 2029; deals with 14 customers cover more than half its 2027-28 capacity, and HBM demand is twice what it can make. x.com
Buying the DRAM dip looks too risky now because CXMT's ambitious next-generation 4F plan and SK hynix's aggressive production expansion raise supply concerns for memory stocks such as Micron, SK hynix and Samsung. CXMT is unlikely to become a serious competitive threat, but it could still weigh on storage-stock sentiment. x.com x.com
Micron's ordinary memory could see tighter supply because HBM consumes far more factory capacity than conventional DRAM. Meeting AI demand could thus extend Micron's opportunity beyond AI memory. x.com
Micron's memory leadership remains intact because it is sold out into 2027. A red day does not change those fundamentals; anyone arguing it has topped must identify which part of demand breaks and when. x.com
The memory sector is finished because China's CXMT has advanced a 4F² DRAM architecture that could greatly increase density. Micron, SanDisk and other memory-stock holders will bleed for months; China will lead AI moving forward, and those stocks are already paying the price. x.com
Micron and SK hynix pricing in a memory shortage past 2030 extends the memory-cycle case beyond the Street's 2028 expectation. SK hynix's record quarter adds evidence: per Wall St Engine, revenue rose 328% to $78.9B, operating profit rose 632% to $62.8B, and operating margin hit 80%. Agentic and physical AI could add demand as they roll out. x.com x.com
