Silicon Peninsula #001 — The Korea chip tape, read from the source

Tuesday, September 15, 2026 · 5-minute read · Free edition

Welcome to issue one. Silicon Peninsula is a daily English brief on Korea's semiconductor and AI-hardware supply chain — Samsung, SK hynix, and the 200-odd equipment, materials, and fabless companies behind them — built from Korean-language reporting, regulatory filings, and customs data that rarely make it into English on the same day. Every number below links to its source.

The tape

Korea's chip majors caught a bid on Tuesday morning after Monday's rout. As of 9:36 KST, SK hynix was +1.0% at ₩1,714,000 and Samsung Electronics +0.4% at ₩250,000, clawing back part of Monday's −7.12% and −4.24% drops. The overnight driver was Wall Street: the Philadelphia Semiconductor Index fell 5.86%, with Nvidia −3.36%, Micron −5.25%, Broadcom −4.77%, AMD −4.40%, Intel −5.59%, and SK hynix's Nasdaq-listed shares −7.60%. The blamed trio: talk of an "AI build-out slowdown," higher oil, and the 10-year Treasury yield trading above 5% intraday.

Kiwoom Securities' Han Ji-young framed the mood precisely: the market "isn't doubting AI industry growth itself — sensitivity to negative factors has increased," with the September FOMC adding narrative uncertainty. (Financial News, Edaily)

Three signals

1. Chips are now 47% of everything Korea exports. Korea Customs Service data for September 1–10 put semiconductor exports at $16.48B, +270.1% YoY, or 47.1% of total exports ($34.97B, +82.6%). Cumulative 2026 exports reached $728.56B by September 10, passing the full-year 2025 record on September 5 — 117 days ahead of last year's pace. Shipments to Taiwan (+176%), the US (+137.5%), and China (+103%) led. The 10-day trade surplus, $10.37B, is an early-September record. Why it matters: the entire Korean macro print is now a memory-price print; anyone modeling KRW, KOSPI, or BOK policy is modeling DRAM. (TechTimes, citing KCS)

2. DRAM export price: $92,183 per kilogram. For August 1–20, Korea's DRAM export unit price ran +401% YoY, with export value +504.8% to $9.807B. TrendForce notes the price has risen 12.5× from its trough over three years and seven months, versus 2.4× for gold; a kilogram of Korean DRAM now buys roughly 620 grams of gold. Server DRAM contract pricing is modeled at +53–58% QoQ in 2Q26, +13–18% in 3Q, and +3–8% in 4Q — i.e., still rising, but decelerating. Why it matters: the 4Q deceleration is the number bears will anchor on; the question for Samsung's early-October preliminary guidance is whether HBM mix offsets commodity slowdown. (TrendForce)

3. HBM4: three suppliers, three different clocks. The last three weeks reset the HBM4 map. SK hynix broke ground on its Indiana (West Lafayette) packaging plant on August 27 — investment now above $4B, but mass HBM production pushed to 2H 2029, a year later than planned. Micron, per Electronic Times, began 12-high HBM4 production in 2Q26 and targets up to 60,000 wafers/month of HBM capacity by year-end. And TrendForce (September 7) credited Samsung with the strongest QoQ bit-shipment growth of the three, attributing it to its early HBM4 ramp. Why it matters: the "SK hynix runs away with it" narrative of 2025 is now a three-way race on HBM4, and the US-capacity timeline just got longer for the leader. (HBM supply timeline)

Korea-only radar

Items reported in Korean that we did not find in English coverage.

• DeepX gets government "green tech" status for four AI accelerators. Two M.2 modules on its DX-M1 NPU and two PCIe modules on DX-H1 received Korea's Green Technology Product verification on September 14. KTL testing showed up to 26.25% lower power and chip temperatures 20°C lower than reference systems. The practical payoff is preference points in public procurement and export-support programs — a channel for Korea's most-watched edge-AI fabless. (THE ELEC)
• Jaram Technology terminates a chip-design contract with a European telecom customer (headline only; filing details to follow). (THE ELEC)
• SK Innovation says no further restructuring beyond the SKIET merger, and no SK On IPO — relevant to Korean AI-power and battery supply-chain watchers. (THE ELEC)

Number of the day

$4.11 billion — Korea's average daily exports in the first ten days of September. Nearly half of it was chips.

Calendar

• Wed Sep 16 (US) — FOMC decision. Korean chip names traded Monday as if the "AI slowdown" story and the rates story were the same story.
• ~Mon Sep 21 — Korea Customs Service September 1–20 export data (the next DRAM unit-price read).
• Late September — Micron FQ4 results: the first HBM4 revenue commentary from the third supplier.
• ~Oct 8 — Samsung Electronics 3Q26 preliminary results.

Silicon Peninsula is written from primary Korean sources every weekday morning (KST). Numbers are quoted from the cited source; where Korean outlets use won, we keep won. Reply to this email with a company you want tracked. Forward it to someone who models memory prices for a living.