US memory chip stocks rebound premarket; SanDisk up over 5%, Micron up 4%

A broad premarket rebound across memory names suggests the prior selling was treated as a sector-wide move rather than a company-specific problem, since SanDisk, Micron, Western Digital and SK Hynix are all recovering together. That clustering matters because memory pricing and inventory cycles tend to hit the whole group at once, so the group's direction often says more about sentiment toward the storage cycle than about any single issuer. Whether this bounce holds into the regular session, or fades as it has for the sector before, is the open question.