SanDisk (SNDK) officially joined the S&P 100 before the open on Monday, 21 September 2026, alongside Dell Technologies, Palo Alto Networks and Arista Networks, replacing Nike, Colgate-Palmolive, Simon Property Group and Honeywell Aerospace. SanDisk closed Friday at $1,791.82, up 10.99%, after a three-day run of roughly 17.9% from $1,519.97 on 16 September. The company's market value is about $262 billion, more than four times Nike's roughly $54 billion.
The index-driven buying appears largely priced in. According to Motley Fool estimates, the largest S&P 100 tracker needs only about $100 million of SanDisk stock, while the name routinely trades more than $15 billion a day. SanDisk has been in the S&P 500 since late November 2025 and is up more than 600% this year. Fundamentals remain strong: fiscal 2026 revenue reached $20.25 billion, up 175%, data center revenue rose 437%, and net income swung to $11.4 billion from a $1.6 billion loss a year earlier. First-quarter fiscal 2027 revenue guidance is $10.3 billion to $10.8 billion, about 18% above the prior quarter, with non-GAAP gross margin guided at 83% to 85%. The average one-year analyst target is $2,125, with a range from $1,000 to $3,600.
At the same time, China's CXMT has moved its fifth-generation DRAM technology into mass production, using quadruple patterning to achieve an active-area half-pitch of 11.95 nanometres and producing two 24Gb LPDDR5X products. CXMT says the process lifts gross dies per wafer by at least 50% versus its previous platform, and its global DRAM revenue share reached about 9.5% in the second quarter, making it the fourth-largest supplier. Intel CEO Lip-Bu Tan recently said memory prices had risen five- to sevenfold as AI demand strained supply. The immediate competitive threat is greater for Micron, whose business remains heavily tied to DRAM. UBS analyst Timothy Arcuri still sees pricing strengthening across core DRAM and NAND, with shortages potentially lasting through calendar 2027 and even 2028, but CXMT's improving productivity may shorten the period investors expect scarcity-driven pricing to last.
SanDisk faces a later but strategically important NAND risk. CXMT is not yet mass-producing NAND, though Reuters reported plans for an R&D production line at a new Beijing facility and talks with prospective customers. Counterpoint data put SanDisk's second-quarter global NAND share at about 11%, while Chinese rival YMTC already controlled roughly 14%. JPMorgan analyst Harlan Sur has argued SanDisk is uniquely positioned to benefit from AI-driven NAND demand, helped by long-term customer agreements. A well-funded new Chinese entrant would eventually test both assumptions. The next hard market catalyst is Micron's fiscal fourth-quarter results on 30 September, the first major read on memory pricing since SanDisk's August results.
