Foundry holds, HBM resets: the value-chain divergence after the May run
The four weeks since the May 27 entry have separated the value chain into two bands. EWT (Taiwan/TSMC) is up 3.1% in price and still running at +11.4% 1m. EWY (Korea/Samsung-SKH) has dropped from $200.65 to $192.20 and collapsed from +29.81% 1m to +3.1% 1m. The equity signal is plain: the foundry layer is holding its gains; the HBM/memory layer has mean-reverted after the reflexive rally. EWN (Netherlands/ASML) is essentially flat at $67.91 vs $67.33 on May 27 -- the equipment breakout stalled at entry.
What I'm watching
- EWT at $105.24, 1m +11.4%, 52w-pos 89.3%, DD -5.64%: still the strongest chart in the chain. The 52w-pos drop from 100% to 89.3% signals a real (if modest) pullback from the May high, but the ETF is not broken. Foundry-layer pricing power appears sticky.
- EWY at $192.20, 1m +3.1%, DD -12.32%: the May 27 entry flagged "30% monthly move attracts systematic rotation, creating reflexivity." That momentum has fully unwound. The -12.32% drawdown is the largest in the chain. Thesis is intact; the entry that caught the reflexive run is now just holding the structural argument.
- DXY at 101.53, trend rising: the June 18 fx-policy entry re-opened the accumulation gate at DXY below 102. We are now 47 bps from that threshold, with the trend labeled rising. A further DXY push compresses EM (EWY, INDA) before it touches EWN or EWT.
- Rare earth proxy down 16.2% 30d; lithium proxy down 14.4% 30d: AI-supply-chain input costs are falling, not rising. This is ambiguous -- lower input costs support margin expansion for downstream fabs, but a 16% drop in rare earths over 30 days also signals demand softness or a speculative unwind in the upstream. Copper at -5.2% 30d points the same direction.
What changed / what matters
The foundry/memory gap is now the key read
In May the whole chain moved in parallel -- equipment, foundry, memory all running simultaneously. That synchronisation has broken. EWT has given up only 5.6% from its peak while EWY has given up 12.3%. The divergence maps cleanly onto the product cycle: TSMC's N3/N2 foundry bookings from hyperscalers are multi-year capacity commitments with pricing power, while Samsung's HBM3e allocation negotiation is a shorter-cycle volume/pricing story subject to quarterly recalibration.
The EU Chips Act 2.0 filing on June 3 (IPTM: 2026-06-03-eu-chips-act-20, severity 3) is structurally positive for ASML and EWN -- the €120bn mobilisation target with demand aggregators and 12-month permitting caps is a meaningful demand-side signal for high-NA EUV tools. But it is a Commission legislative proposal entering co-decision; the 2023 act remains in force during that process. No price catalyst is expected from this filing until Parliament or Council moves. The EWN flat-to-slightly-up chart is the correct response: thesis is strengthening, price is waiting.
DXY is the near-term gating variable
The June 18 entry described the DXY sub-102 hold as a gate re-opening for EM accumulation. DXY has since moved from 100.3 to 101.5, trend rising. If DXY crosses 102, the calculus from June 4 through June 13 returns: EWY carries the dual headwind of HBM momentum cooling AND EM FX compression. EWT and EWN, as developed-market-adjacent exposures (Taiwan's circuit breaker from DXY is the TWD, which is more stable than KRW), are less exposed to this trigger.
The minerals input picture adds a secondary note: copper -5.2% 30d alongside platinum -21.9% 30d and silver -27.3% 30d points to a genuine slowdown in near-term physical demand for AI infrastructure materials. Whether this is a supply-glut correction or a demand inflection is not yet readable. It is not inconsistent with continued foundry capacity bookings (which are long-dated) alongside a pause in near-term data-centre build orders.
Candidate picks within this theme
- EWT (Taiwan) -- foundry layer holding relative strength; 52w-pos 89.3% and DD -5.64% leave room to add; TSMC multi-year N2 capacity the most durable leg in the chain.
- EWN (Netherlands) -- EU Chips Act 2.0 structural tailwind building; price flat, moat intact; high-NA EUV order backlog thesis strengthening even as the price waits for a legislative catalyst.
- EWJ (Japan) -- equipment diversification (TEL, Disco, Advantest) plus BoJ normalisation; per June 18, EWJ just printed a new 52-week high; lowest-beta way to maintain chain exposure through DXY uncertainty.
- EWY (Korea) -- thesis intact (HBM3e cycle, KUSPI anchor, governance re-rating) but momentum fully reset; DCA pacing appropriate; wait for DXY to resolve below 101 before adding.
- INDA -- omit; composition mismatch (70%+ software services vs semi-buildout thesis) unchanged.
What I'd revise if I saw
TSMC next capacity guidance showing N2 booking deferrals from hyperscalers: that breaks the foundry-layer/memory-layer divergence thesis and collapses EWT toward EWY's current drawdown level.
Cross-references
- Previous entry on this theme:
docs/thinking/2026-05-27-tech-ai-ewn-equipment-cycle-join.md - EU Chips Act 2.0 IPTM action:
docs/iptm/actions/2026-06-03-eu-chips-act-20.md - EU CADA IPTM action:
docs/iptm/actions/2026-06-03-eu-cada-cloud-ai-development-act.md - DXY gate context:
docs/thinking/2026-06-18-fx-policy-dxy-holds-ewj-52w-high.md - Relevant macro routes:
/api/country/TW,/api/country/KR,/api/country/JP,/api/country/NL