Daily
AI Infrastructure Daily: everything that happened across chips, memory, power, data centers and financing in a 3-minute read, every weekday. Free. Read today's →
NVDA$166.2−4.34%TSM$405.5−1.90%SK hynix₩1,254,000−1.80%Samsung Electronics₩208,000+0.97%MU$798.4−1.59%ASML$1,497.1−2.43%AVGO$364.4+5.54%LITE$624.6−3.61%COHR$232.1−1.04%ANET$206.6+5.06%GEV$818.5+1.27%ETN$359.0−0.44%VRT$209.6+1.52%CEG$282.4+2.79%VST$134.5+0.79%PWR$606.2−0.29%HD Hyundai Electric₩421,000+3.95%MP$37.45+1.96%FCX$60.45−2.69%CCJ$71.78−3.42%MSFT$523.0+0.36%META$623.6−0.82%CRWD$229.9+0.35%SMH$501.7−1.03%SPY$757.1−0.35%
Home/Daily Brief/2026-11-09
AI Infrastructure Daily · Monday 9 November 2026 · 4 min read

Coherent jumped without a clear catalyst

It was a mixed day for AI infrastructure, with money moving between parts of the chain rather than leaving it. Power, construction and cloud names outperformed chips. That usually means investors see the physical build-out (electricity, buildings) as the slower, more durable bottleneck. The strongest part of the chain was AI apps & frontier tech; the weakest was Memory & storage.

Key highlights

  1. Memory & storageAMD admits GPU driver bug is writing data continuously, wearing out SSDsAMD +11.0%
  2. AI chips & foundrySK hynix to expand U.S. work force, deepen Nvidia and AI chip tiesSK hynix -10.4%NVDA +2.8%
  3. Neoclouds, bonds & AI financingCoreWeave Stock Drops as CEO Pushes for Texas AI Data-Center ClarityCRWV +6.3%
  4. Power & gridNot Bloom Energy. Not Vistra. This AI Power Stock Just Posted a 96% Jump in OrdersBE +3.4%VST +10.6%
  5. Optics & networkingCoherent Posts $2.4B in Revenue, Reflecting AI DemandCOHR +13.6%
  6. Data centers, cooling & build speedEPG Modular Data Center marks topping-out of its US$120 million Malaysia FIZ Factory

Markets

The S&P 500 rose 0.3%, the Nasdaq 100 rose 1.4% and chip stocks outperformed (+3.6%). Asia had a rally: KOSPI -0.8%, Taiwan TAIEX +4.9%, Nikkei 225 +2.3%, Hang Seng -0.1%. In Korean memory, SK hynix fell 10.4% and Samsung -6.3%. The US 10-year yield rose 2bp to 4.86%; oil -2.9%, VIX 23.5.

US

S&P 500+0.3%
Nasdaq 100+1.4%
Semiconductors+3.6%
Utilities-0.4%

Asia

KOSPI5,019-0.8%
Taiwan TAIEX41,662+4.9%
Nikkei 22558,776+2.3%
Hang Seng24,449-0.1%
SK hynix-10.4%
Samsung Electronics-6.3%
TSMC (ADR)+6.3%

Rates & macro

US 10-year yield 4.86%+2bp
US dollar index 101.87-0.4%
WTI oil 88.21-2.9%
VIX 23.50-8.3%
Bitcoin 74,794+0.3%

The AI chain today average move · day / week

AI chips & foundry+1.7%-16.9%
Memory & storage-2.8%-26.2%
Optics & networking+2.6%-17.1%
Servers, racks & components-1.9%-18.3%
Power & grid+2.2%-7.4%
Data centers, cooling & build speed+2.7%-13.6%
Hyperscalers & AI spending+0.2%-0.1%
Neoclouds, bonds & AI financing+9.4%-13.0%
AI models & applications+5.7%-6.3%
Robotics & physical AI+1.0%-4.5%
Materials+1.5%-1.5%

AI chips & foundry +1.7%

Chip stocks +1.7% on the day (26 of 40 up), -16.9% on the week. FormFactor led (+13.0%) and Ajinomoto lagged (-12.4%).

Chip Testing & Burn-in +6.0% Stood out today

Chip Testing & Burn-in stocks +6.0% on the day (4 of 5 up), -15.8% on the week. FormFactor led (+13.0%) and Advantest lagged (-5.0%).

Chip Substrates -10.0% Stood out today

Chip Substrates stocks -10.0% on the day (0 of 4 up), -26.9% on the week. Ajinomoto lagged (-12.4%).

Memory & storage -2.8%

Memory and storage stocks -2.8% on the day (2 of 7 up), -26.2% on the week. Micron led (+5.1%) and SK hynix lagged (-10.4%).

Optics & networking +2.6%

Optics and networking stocks +2.6% on the day (14 of 19 up), -17.1% on the week. Coherent led (+13.6%) and Zhongji Innolight lagged (-9.2%).

AI Networking +3.7% Stood out today

AI Networking stocks +3.7% on the day (5 of 6 up), -12.4% on the week. Arista Networks led (+7.3%).

Servers, racks & components -1.9%

Server and component stocks -1.9% on the day (11 of 27 up), -18.3% on the week. Navitas Semiconductor led (+9.5%) and Rohm lagged (-15.0%).

Power & grid +2.2%

Power and grid stocks +2.2% on the day (34 of 50 up), -7.4% on the week. Oklo led (+22.7%) and Hyosung Heavy Industries lagged (-11.9%). The news was mostly about deals and contracts.

Data centers, cooling & build speed +2.7%

Data center, cooling and builder stocks +2.7% on the day (16 of 22 up), -13.6% on the week. IREN led (+20.0%) and Jentech Precision lagged (-10.0%).

Hyperscalers & AI spending +0.2%

Hyperscaler stocks +0.2% on the day (3 of 5 up), -0.1% on the week.

Neoclouds, bonds & AI financing +9.4%

Neocloud stocks +9.4% on the day (5 of 5 up), -13.0% on the week. IREN led (+20.0%).

AI models & applications +5.7%

AI software and security stocks +5.7% on the day (24 of 35 up), -6.3% on the week. Firefly Aerospace led (+36.8%) and Zscaler lagged (-3.0%).

Robotics & physical AI +1.0%

Robotics stocks +1.0% on the day (22 of 45 up), -4.5% on the week. Red Cat led (+18.6%) and Yaskawa Electric lagged (-8.4%).

Materials +1.5%

Materials stocks +1.5% on the day (14 of 25 up), -1.5% on the week. Perpetua Resources led (+16.6%) and Nippon Sanso lagged (-7.0%).

Policy & regulation

Rules, taxes and local politics are now a regular part of the build-out story.

Data & what's coming

  • H100 rental price: +0.0% over 7 days.

Next 7 days

  • 11-09EarningsQuanta Computer (2382.TW)
  • 11-09EarningsAjinomoto (2802.T)
  • 11-09EarningsAsia Vital Components (3017.TW)
  • 11-09EarningsAST SpaceMobile (ASTS)
  • 11-09EarningsConstellation Energy (CEG)
  • 11-09EarningsNexGen Energy (NXE)

What it means for stockholders

Memory. Memory lagged (-2.8%). One weak day doesn't change a tight HBM market; watch contract prices, not the tape.

Rotation. Money rotated into neoclouds (+9.4%) and out of chip substrates (-10.0%). That is a shift inside AI, not an exit.

Neoclouds. Financing is the swing factor. Holders should watch new debt deals and their interest rates. Cheaper, easier funding is good news for the stocks; costlier funding is the first warning sign.

Past days (15)

Built automatically from 924 public headlines, delayed prices and our bottleneck research; each item links to the original story. Published each weekday around 6:30am US Central. Not investment advice.