Memory remains structurally scarce because SK hynix says conventional DRAM and HBM are practically sold out through 2029, while customers request roughly twice the HBM volume it can produce. Long-term agreements cover more than half of 2027 and 2028 capacity, and the company expects the supply-demand imbalance to persist through 2030. x.com  x.com 

Rising memory contract prices strengthen the case for memory stocks still far below their highs. JPMorgan forecasts Q4 DRAM prices up 13% and NAND up 18%; Micron is 28% below its 52-week high, Seagate 44%, Sandisk 47% and Western Digital 55%. x.com 

Memory stocks face huge downside because memory is a commodity, and today's undersupply will turn to oversupply as capex rises. Demand is inelastic, so suppliers have pricing power only while undersupplied; Samsung, SK hynix and Micron are all raising capex, and China's big DRAM expansion will ease shortages across the chain. Stocks peak before financials weaken, DRAM prices are already falling, and customers are optimizing memory use, so low P/Es offer no protection. x.com 

More memory CapEx may yield proportionally fewer bits as HBM consumes more wafer capacity, supporting SK hynix and Samsung's pricing. Both reported double-digit quarterly DRAM and NAND price gains; Samsung targets 60-70% of mid- to long-term capacity under LTAs. SK hynix has the stronger execution record, but Samsung could benefit enormously from conventional memory without winning HBM4. If trends persist, normalized margins could rise, though memory remains cyclical. x.com 

SK hynix's stronger pricing and contracted demand support the still-favored memory duration trade. DRAM and HBM capacity is sold out through 2029, and a supply-demand imbalance is expected through 2030. More than half of 2027-28 capacity is under long-term agreements, with agreed 2027 HBM prices significantly higher year on year. Guangfa HK expects fund flows and bearish sentiment to improve after earnings. x.com 

Micron and SanDisk are a skip: DDR4 prices rising 50% quarter on quarter is already consensus, and both stocks have run on it. The surprise sits in legacy DRAM makers Nanya and Winbond, which are hard to access. The more promising gap is on the optical receive side, in photodiodes, InP substrates and germanium supply, rather than in crowded EMLs and switch optics. x.com 

SK hynix's strong pricing and secured capacity could push memory stocks higher. Per Wall St Engine, its Q3 DRAM ASP rose by a high-20s percentage quarter over quarter, while long-term agreements cover more than half of its 2027-28 capacity. Those figures support the memory upcycle. 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

Sandisk's growth is coming entirely from higher prices, not more bits shipped, which makes it hard to sustain. Revenue grew 97% quarter over quarter as almost every hyperscaler raised capex to cover rising prices. Its roughly 80% gross margin is excessive and customers resent it; as long as demand far exceeds supply it can keep both, but supply eventually catches up and margins will erode. The open questions are how long new fabs take and whether Sandisk or rivals add the supply. x.com  x.com  … Show more

Memory undersupply should persist through 2031 on surging AI demand for HBM, DDR5 and enterprise SSDs, per Citi, which is bullish for Micron, SK hynix, Sandisk and memory makers broadly. Citi projects HBM bit demand rising 62% in 2027 and 69% in 2028, with DRAM demand outpacing supply in both years. NAND should also stay undersupplied as manufacturers prioritize new capacity for DRAM and HBM. x.com