Silicon Peninsula #003 — SK hynix eyes Intel's Ohio fab for its first US memory line

Thursday, September 17, 2026 · 5-minute read · Free edition

The tape

Seoul broke its four-day losing streak on bargain hunting in the two memory names. KOSPI closed at 6,717.97, +1.37%, with Samsung Electronics at ₩253,500 (+2.01%) and SK hynix at ₩1,759,000 (+4.08%). Institutions bought a net ₩1.21T; the won still weakened 9.2 to ₩1,368.6/$. (Korea JoongAng Daily)

In New York the Fed raised rates 25 bp, as priced, and signalled at least one more hike this year. The Dow fell 1.07% and the S&P 500 0.45%, but the Nasdaq only 0.06% because chips held up: Nvidia +0.82% to $213.90, AMD +1.65%, Broadcom +0.07%, Micron −0.11% to $926.55, SOXX +0.64%, and SK hynix's Nasdaq shares flat at $174.87. Intel was the standout at +4.03% on the story below. (TheStreet, NVDA, AMD, AVGO, MU, SOXX, SKHY, INTC)

Three signals

1. SK hynix and Intel are talking about US memory production. Reuters reported that SK hynix is negotiating to make memory chips in the United States for the first time, with leasing part of Intel's Ohio fab as a leading option; a joint venture that brings in large cloud customers is also on the table. SK hynix said it is "reviewing various ideas" for new production bases but nothing is decided; Intel called the report speculation. The backdrop is tariff policy: Commerce Secretary Lutnick has said US-made chips would carry no tariff. SK hynix's only US project today is a roughly $4B HBM packaging plant in West Lafayette, Indiana, targeting mass production in 2H29 — a back-end site, not a wafer fab. Why it matters: An idle, already-permitted US shell is the fastest route to "made in America" DRAM, and a customer-funded JV would move capex risk off SK hynix's balance sheet. It would also give Intel Foundry an anchor tenant without Intel having to win a logic customer. (Electronic Times, Seoul Economic Daily, TechCrunch)

2. Samsung told its union the chip unit will earn ₩370T this year. Executives gave the Device Solutions figure in a recent meeting with union leaders, up from ₩330T in June and ₩300T in May wage talks, assuming about ₩1,350/$. The consensus for Q3 company-wide operating profit is ₩107.4T on ₩196.6T of revenue; Q2 chip profit was ₩89.2T. Pricing explains it: a 64GB DDR5 server RDIMM contract is about $1,500 in mid-September versus $272 a year earlier, with spot as high as $3,100, and an industry source puts inventories at the top three memory makers under 10 days. Why it matters: The number is being used in a bonus negotiation, so it is not guidance — but it tells you management sees no price roll-over into Q4, which is what Monday's SOX sell-off was pricing. (Seoul Economic Daily, Seoul Economic Daily)

3. The memory boom has not reached wafer makers yet. THE ELEC tallies 1H26 results: SK Siltron's operating profit fell 55.1% to ₩41.1B; SUMCO swung to a ¥6.3B loss as depreciation rose ¥11.6B to ¥60.3B; Siltronic lost €104.3M with depreciation up 89.4%; GlobalWafers' profit fell 42.4%. Only Shin-Etsu grew (+23%). The cause is capacity decided in 2021–22 now coming on line: global 300mm capacity is put at 10.69M wafers/month in 2026, rising to 11–11.76M by 2028. The article expects wafer prices to rise 10–15% as supply tightens. Why it matters: Wafers are the last upstream input still priced for a down-cycle. If that 10–15% sticks, SK Siltron's recovery becomes a 2027 story for SK Inc. — and a small, late cost bump for DRAM makers. (THE ELEC)

Korea-only radar

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

• Wonik Robotics is testing wheeled humanoids in Samsung fabs. A three-stage qualification (operation, reliability against vibration and dust, final validation) for wafer logistics, using five-finger hands that sense object weight and material. No volumes or dates. (THE ELEC)
• Cooles targets Nvidia Rubin Ultra-class packages. Its "thermal clutch" bonding cuts heat/cool time for a 180×70 mm package from over a minute to under 10 seconds, with warpage of 0.1 mm or less. (THE ELEC)
• Cosem enters HBM inspection. An ion-beam polisher for cross-sections at about one-tenth the cost of FIB-SEM, qualification expected late 2026–early 2027, plus a 30 nm atmospheric-pressure SEM for in-line panel and glass-substrate inspection. (THE ELEC)
• DART watchlist: Intekplus filed a stock-option grant report at 15:41 KST (headline only) — the only watchlist match in the past 24 hours. (DART)

Number of the day

5.5× — the rise in a 64GB DDR5 server module's contract price in a year: $272 → $1,500. (Seoul Economic Daily)

Calendar

• ~Mon Sep 21 — Korea Customs Service September 1–20 exports: the next DRAM unit-price read.
• Thu Sep 24 – Sat Sep 26 — Chuseok; Korean markets closed, no issue on the 24th or 25th.
• Wed Sep 30 (US) — Micron FQ4 results: first HBM4 revenue commentary of the season. (Micron)
• ~Oct 8 — Samsung Electronics 3Q26 preliminary results; consensus operating profit ₩107.4T.

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. Founding-member Pro seats ($99/yr, first 50): reserve one here. Reply to this email with a company you want tracked. Forward it to someone who models memory prices for a living.