The Second Memory Engine — Nanya's 621%, Korea's $29.4B, and the Commodity DRAM Reflation the Market Hasn't Repriced

Summary

Over the last 72 hours, four countries produced signals that a second memory cycle — off the HBM axis — has quietly started. Taiwan's Nanya Technology (2408-TW) reported June revenue NT$29.4B, +621% YoY. Korea's May semiconductor exports hit $29.4B, +154.29% YoY, the third consecutive month of triple-digit growth. Japan's SEAJ raised its FY2026 domestic equipment forecast to ¥6.5T, +26% YoY. In the US, Intel and AMD conceded a CPU shortage whose root cause they identified as memory scarcity, not silicon logic. The market is still only pricing the HBM story. Commodity DRAM and NAND revenues have already exploded, yet FactSet analysts are cutting price targets.

This report tests that gap along the four-country supply chain.

Taiwan — Revenue explodes, target prices get cut

Nanya's June NT$29.4B is not a normal recovery. +621% YoY, +6.2% MoM — the result of DDR4 inventory exhaustion colliding with a DDR5 transition bottleneck. On the same day, a FactSet survey of 14 analysts cut Nanya's median 12-month target 6.45% to NT$428, and Winbond's (2344-TW) target was slashed 15.25% to NT$200. The only logic that supports lowering a target on a company whose revenue just 6x'd is 'this won't last.' There's no data backing that assumption — DDR5 16Gb spot prices hit $46.667 on July 3, still climbing.

Taiwan's TAIEX gapped down 900 points on the Philadelphia Semiconductor Index's overnight -5%, then recovered — but foreigners net-sold NT$141B (≈$4.1B) this week, concentrating on memory and panel names (鉅亨網 2026-07-03). The names being sold have improving fundamentals; the price is going the opposite direction.

Japan — Equipment forecast lifted, Kioxia rebounds

SEAJ's FY2026 equipment forecast lift to ¥6.5T, +26% YoY isn't just about HBM EUV and bonding tools. The real driver is etch and CVD tool re-orders for commodity DRAM and NAND lines. A separate release projected FY2028 sales at ¥7.8T — a five-year doubling.

Kioxia's NAND comeback is part of the same current. AI infrastructure demand doesn't only need HBM. Training-data storage, checkpoints, and model-serving caches all sit on QLC/TLC NAND, and that demand is coming back to Kioxia. Advantest's (6857) buyback disclosure is another data point: it means DDR5 and LPDDR5X tester bookings are rising alongside HBM.