This divergence is driven prim

This divergence is driven primarily by technical and structural mechanics rather than fundamental macro re-pricing, as SanDisk's (+11.90%) replacement of Nike in the S&P 100 triggers mandatory passive fund buying while SK Hynix (+8.14%) capitalizes on its new Nasdaq DRs and record Korean AI-chip exports (+5.65%). However, with Micron (+6.10%) trading over $1,000 after a 2.5x YTD surge, riding this short-term passive liquidity window requires strict risk management, as high valuations leave little room for error ahead of Micron's September 30 earnings demand check and potential production risks from a strike threat at its primary Taiwan facility.

Two Sessions Undid Friday's Rally: Memory Supercycle Over?

Memory split: SK Hynix +4.83%, Micron −1.61%, SanDisk −0.12% — the same names that rallied together on Friday, SanDisk +12%, Micron +6%. The tightness is real: the shortage is spreading from HBM into DRAM and NAND, and Korean brokers put Samsung's and SK Hynix's inventories below ten days. The crack: Kioxia denied merger talks with SK Hynix and signalled it would cool price rises — the opposite of the tight-supply story. The counterparty to higher prices is not just the customer but rivals who want to keep that customer. Follow SK Hynix on inventory, or wait for Kioxia's stance to hit quotes?

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