SNDK Falls With the Memory Complex as Korea's Kospi Crashes 10%

Why Korea Took the Whole Memory Trade Down

SNDK didn't fall on anything SanDisk did. The trigger was offshore: South Korea's Kospi closed down 10% on Tuesday, a drop steep enough to force a 20-minute trading halt, with memory bellwethers SK Hynix and Samsung Electronics both sliding more than 12%. Korea is where the world's DRAM and HBM supply lives, so when its index breaks, every memory name re-prices off it.

The spillover was immediate. Micron fell 8.4%, Western Digital dropped more than 7%, and the Roundhill Memory ETF (DRAM) lost 13%, part of a broader tech selloff that began Monday and spilled into Asia overnight, with Nasdaq-100 futures down 2.7%. In cash trading SanDisk was off roughly 9% to 10%. The Hyperliquid perp, which trades around the clock on a thin, momentum-heavy book, ran the move further to 15.30% and $1,969.

A Thin, Overbought Name Falls Harder

Context explains why SNDK led the group down. It came into Tuesday off a record-high close, the cap on a run that pushed its monthly RSI to an extreme near 99 — about as stretched as a chart gets. At roughly 69x trailing earnings there's almost no cushion for a margin miss, which is exactly what the resurfacing bear case on NAND cyclicality leans on.

The short argument is specific: Samsung and Micron are both adding NAND capacity, and SanDisk's asset-light model leaves it dependent on its Kioxia joint venture for production while carrying roughly $1.2 billion in contractual payments and over $370 million in facility-depreciation prepayments through 2029. A stock priced for a permanent supercycle is the first one sold when the cycle question reopens, and a 24/7 perp with a shallow book amplifies that on the way down.

What Micron's Print Sets Up

The next real catalyst isn't far off. Micron reports fiscal Q3 after Wednesday's close, and its guidance is the read-through for the entire memory complex — pricing, inventory, and how durable the AI-driven NAND and DRAM shortage actually is.

The bull case still has backing. BofA's Wamsi Mohan reiterated a Buy and lifted his SanDisk target to $2,100 from $1,550, citing pricing power, and SanDisk's datacenter revenue grew 645% year over year. If Micron confirms tight supply and firm pricing, Tuesday's flush reads as a Korea-driven liquidation in an overbought tape. If it disappoints high expectations, the unwind has room to keep running.