Why Kioxia (KIOXIA) fell 1.66%
Kioxia (KIOXIA) fell 1.66% on October 29, 2026 — AI memory selloff drags Kioxia on Samsung miss.
What happened
Chip stocks sold off on Samsung's profit miss and lighter capex guidance from Microsoft and Alphabet, which dragged INTC, AMD, AVGO and MU lower. Kioxia fell with the AI Memory group, not on any news of its own.
Why it moved
Kioxia sells NAND and sits in the same AI-driven memory pricing chain as Samsung and Micron, so a weaker profit outlook for the sector and softer hyperscaler spending signal lower memory demand and cut the group's…
Why it matters
This is the AI Memory theme: AI servers have been pulling HBM and DRAM supply and lifting memory prices for months. Today's move suggests that squeeze is losing momentum rather than reversing.
What would break the thesis
Watch whether Samsung's miss reflects a real pricing slowdown or a one-off, and whether hyperscaler capex guidance is revised back up. Solidigm listing-rule noise could also add volatility without changing fundamentals.