Daily Market Brief — Tue, Oct 27, 2026

Tuesday, Oct 27, 2026 · Prices-only edition · market data through Monday's close and Tuesday morning

Prices-only edition. Both news stages failed this morning: FT (Claude in Chrome dropped its connection; navigation to ft.com timed out) and WSJ/The Information (the Chrome extension wasn't connected). No articles were collected, so there are no Article Takeaways or Through-Line today. Everything below comes from the prices and market-data stage, which finished late (about 12:00 CDT).

Numbers Worth Remembering

• H100 compute index $3.17/hr, +6.4% w/w, flat d/d; +27% over one month, just under the mid-October high near $3.21.
• TrendForce headline: 2027 HBM outlook revised up, with blended ASP forecast +121% y/y.
• DDR5 16Gb spot $61.33 (+1.0% w/w); DDR5 eTT $29.30 (+2.8% w/w).
• DDR5 RDIMM 32GB module $2,165 (−0.9% w/w); DDR4 16Gb spot $82.62 (−0.9% w/w).
• Kospi +3.1% to 5,638 (briefly tripped a buy-side circuit breaker); SK Hynix +5%. Nikkei +1.7% to 63,268.
• S&P 500 7,676.77 (+0.70%), Nasdaq 26,169.38 (+0.82%) Monday; the semiconductor ETF rose nearly 3% after Anthropic's IPO filing.
• WTI $101.76 (−1.46%), Brent ~$116; 10-year yield ~4.99%.
• FOMC decision Wednesday 2:00 pm ET; CME odds ~10% for a hike.

Top Takeaways

1. The H100 rental index held at $3.17/hr, up 6.4% on the week and 27% over one month. GPU rental prices are still climbing a month after the run-up began, which means demand for AI compute is still absorbing new supply (inference). (no single ticker; read-through to CoreWeave and Nvidia)
2. TrendForce revised its 2027 HBM price outlook up and now forecasts blended HBM ASPs up 121% year on year. HBM is sold on long contracts tied to AI accelerator builds, so a higher price outlook a year ahead points to sustained margin upside for the three HBM makers rather than a one-quarter spike (inference). (SK Hynix +5%; MU and Samsung moves not in notes)
3. Korea's Kospi jumped 3.1% and briefly hit a buy-side circuit breaker, led by SK Hynix (+5%). It extended Monday's US chip rally. The index is heavily weighted to the two memory makers, so it trades as a memory-price proxy (inference). (000660.KS +5%)
4. US stocks rose Monday (S&P 500 +0.70%, Nasdaq +0.82%), led by chips after Anthropic's IPO filing, with the semiconductor ETF up nearly 3%. A listed AI lab with a large compute bill gives investors a new reason to pay up for the chip supply chain (inference). (semiconductor ETF ~+3%; individual moves not in notes)
5. Oil fell Monday, with WTI down 1.46% to $101.76, on progress in Iran diplomacy. Crude is still above $100, so any easing feeds straight into inflation expectations days before the Fed decision and PCE (inference). (no single ticker)
6. HSBC fell more than 7% after its Q3 results and dragged the FTSE 100 down about 1%, while Europe missed the US tech rally (Stoxx 600 −0.4%). European indices have little AI hardware exposure, so the AI trade keeps widening the gap with US indices (inference). (HSBA.L −7%+ intraday)
7. The Fed decides Wednesday, with CME odds at about 10% for a hike, and Microsoft and Alphabet report after the close. Hyperscaler capex guidance that day matters more for the H100 and memory prices above than the rate decision does (inference). (MSFT, GOOGL report Wed)

Meaningful Percentage Moves

• H100 index $3.17/hr, +6.4% w/w, 0.0% d/d, 1M +27%: high. Compute remains tight. The index is consolidating just under its mid-October high rather than rolling over.
• HBM 2027 blended ASP forecast +121% y/y (TrendForce headline): high. It strengthens the SK Hynix, Micron and Samsung memory thesis into next year.
• DDR5 16Gb eTT spot +2.8% w/w; DDR5 16Gb spot +1.0% w/w: low to moderate. Current-generation DRAM keeps drifting higher.
• DDR4 16Gb spot −0.9% w/w; DDR4 eTT −2.0% w/w: low. Legacy DRAM is softening at the margin.
• DDR5 RDIMM 32GB $2,165, −0.9% w/w: low. Server module pricing is flat, with no new contract figures visible (TrendForce still says AI-server demand is sustaining Q4 contract increases).
• 512Gb TLC wafer −1.3% w/w: low. NAND is flat.

Conflicts: Yesterday's brief put the H100 index at +12.8% w/w; today's notes put it at +6.4% w/w on the same $3.17 print, because today measures against the Oct 20 row ($2.98). WTI settled at $101.76 (Investrade) or $101.57 (CNBC). The direction of Nasdaq 100 futures was mixed across reports this morning.

Market close (Mon) and today

S&P 500 7,676.77 (+0.70%), Nasdaq 26,169.38 (+0.82%), Dow 52,361.58 (+0.28%), Russell 2000 2,787.81 (+0.43%). 10-year ~4.99%, WTI $101.76, Brent $116.01 Tuesday morning, gold ~$4,013–4,026, dollar index ~101.9. Today: Conference Board consumer confidence at 10:00 am ET (consensus 80.5–81.0, prior 81.9). Coca-Cola, Boeing, UPS and PayPal report before the open; Visa, Seagate and Robinhood after the close. Wednesday: FOMC, Microsoft and Alphabet. Thursday: GDP, PCE, ECB and Amazon.