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Sandisk’s reversal from an Investor Day gain of more than 8% to a decline of as much as 9.18% after the Aug. 18 open looks less like a verdict on one company than a sector-wide reassessment: Micron, Western Digital, Seagate and SK Hynix also lost over 7%. The valuation split is clear. Deals lasting up to five years could improve revenue visibility, while AI and HBM demand may support stronger margins beyond the usual memory cycle. But long-term targets only deserve a premium if they translate into durable cash returns. For now, the market appears to be raising the burden of proof across storage, not abandoning the thesis entirely. Not advice, just analysis. #SandiskValuationSplit