Memory chip stocks surge: SK Hynix ADR up 12%, Kioxia ADR up 11.39%

The breadth of the move matters more than any single name: gains run from pure memory plays like SK Hynix and Kioxia down through storage and HDD names like Seagate, suggesting a sector-wide re-rating rather than an isolated catalyst. That dispersion — double-digit ADR moves at the top, low single digits at the bottom — points to memory-specific enthusiasm leading the complex. What's worth watching is whether this breadth holds or narrows back to the memory leaders, which would signal the move was a concentrated trade rather than a broader storage reallocation.