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South Korea Daily Briefing

Saturday, 7 November 2026

📈 KOSPI Bounces 4.07% as Samsung and SK Hynix Stage Recovery After Yesterday's Historic Circuit Breaker — HBM Cycle Demand Intact

Korea's market clawed back aggressively Friday, with the iShares MSCI Korea ETF (EWY) surging 4.07% to 137.01 after the historic KOSPI circuit breaker session that saw Samsung Electronics fall 13% and SK Hynix shed 17% on AI regulation panic following the US Democrat midterm sweep. Tech/Semi led the bounce at +2.01%, with industrials (+0.90%) and banks (+0.22%) in support. The day's message: institutional buyers decided that Samsung and SK Hynix's HBM3E order backlog doesn't disappear because US AI policy gets tougher — regulation of AI deployment is not regulation of AI hardware, and hyperscalers' server buildout is 18-24 months deep in the capex cycle. KB Financial (KB) underperformed at -0.58%, reflecting rate-cut expectations as the BoK weighs the economic damage from yesterday's equity meltdown. Chosun Ilbo reported Jensen Huang's Korean visit will proceed as scheduled — the Nvidia CEO's presence in Seoul is itself a stabilizing signal for the semiconductor supply chain narrative.

By the numbers

iShares MSCI KoreaEWY
137.01
+4.07%(+5.36)

3 things that moved markets

1.

Jensen Huang's Korea Visit Proceeds — Nvidia's HBM Commitment Holds

Chosun Ilbo confirmed Jensen Huang's visit to Korea is proceeding as planned despite the market turbulence, with an Nvidia event scheduled. This is the single most important signal for Samsung and SK Hynix investors today: the NVIDIA CEO showing up in Seoul 48 hours after a 13-17% semicap selloff signals that the HBM supply chain relationship isn't being renegotiated. Nvidia's AI chip roadmap requires SK Hynix HBM3E memory, and no alternative supplier exists at the volume needed for Blackwell and Grace Hopper platforms. Huang's presence is worth more than any earnings guidance revision as a qualitative circuit breaker for the Samsung/SK Hynix complex.

Read at 조선일보 (경제) ↗
2.

TSMC Advances 3D DRAM Production — Secondary Competitive Signal for Samsung

Newsis reported TSMC is pushing forward with next-generation 3D DRAM production plans — a development that creates medium-term competitive risk for Samsung's semiconductor leadership but also validates the fundamental demand thesis. 3D DRAM development represents the next phase of memory density for AI servers, and both Samsung and SK Hynix are ahead of TSMC in production readiness for this format. The development confirms the structural demand story is intact: AI infrastructure buildout is NOT slowing — it's deepening into new memory architectures. Yesterday's -13%/-17% selloff on Samsung/SK Hynix looks like panic-selling of the exact names that benefit from this long-cycle buildout.

Read at 뉴시스 (경제) ↗
3.

Posco Union Rejects Tentative Labor Agreement — Industrial Risk Lingers

Newsis reported Posco's union voted to reject the tentative labor agreement, with the result at 49% approve / 51% reject — a razor-thin margin that keeps strike risk alive at Korea's dominant steelmaker. For KOSPI, Posco is a double read: it's both an industrial bellwether and a battery materials supplier (lithium chemicals, high-purity nickel) for the K-battery complex. A labor disruption at Posco cascades through LG Energy Solution and Samsung SDI supply chains faster than a typical strike — which may explain today's industrials underperformance (+0.90%) relative to the broader KOSPI bounce. Watch for a second vote announcement and whether management escalates to arbitration.

Read at 뉴시스 (산업) ↗

Top movers

Gainers (4)

LPLLPL+2.01%KEPKEP+0.90%WFWF+0.70%SHGSHG+0.55%

Losers (1)

KBKB-0.58%

Sector heatmap

Tech/Semi+2.01%Banks+0.22%Industrials+0.90%

Smart-money note

The 4.07% bounce is institutional, not retail-driven — the volume pattern on EWY and the breadth (Tech/Semi leading, banks lagging) says professional money bought the panic dip in Samsung and SK Hynix specifically, not broad KOSPI. KB Financial's -0.58% underperformance while tech bounced confirms institutional rotation INTO semis, OUT of financials — exactly what happens when investors decide a selloff was overdone. The BoK's next policy meeting (November 28) is now a live cut candidate: governor Rhee Chang-yong has signaled that domestic economic stability matters, and a 13-17% single-day circuit breaker session in the country's two largest caps is the kind of event that pushes central banks to act. A 25bp BoK cut on Nov 28 would be a secondary catalyst to extend the semicap bounce.

What to watch tomorrow

Samsung HBM3E Order Backlog Update

Any official communication from Samsung IR about HBM3E order status for 2027 deliveries will be the definitive read on whether the AI hardware cycle is intact — look for sell-side notes Monday morning.

KRW/USD vs 1,330 Level

Won weakness above 1,350 would trigger BoK verbal intervention and potentially accelerate the rate-cut timeline; a stable 1,320-1,335 band signals the panic flows have normalized.

Posco Second Union Vote

If the union calls a second ballot within 10 days, monitor for a majority shift — a strike would hit Korean steel output and K-battery supply chains within weeks.

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