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Home/Daily Brief/2026-11-05
AI Infrastructure Daily · Thursday 5 November 2026 · 4 min read

CoreWeave signed a deal

It was a risk-off day for AI infrastructure: most of the stocks we follow fell. The strongest part of the chain was Hyperscalers & neoclouds; the weakest was Cooling & buildings. The wider market rose 1.6%, so part of the move was simply the market.

Key highlights

  1. Power & gridVistra plunges 13.5% as Texas election rattles AI power trade, KeyBanc downgradesVST -13.8%
  2. Policy & regulationVertiv Sinks 9%, GE Vernova Down 8% as Democrats Win Congress, Reviving Data Center FearsVRT -12.9%GEV -9.3%
  3. Neoclouds, bonds & AI financingIREN Stock Drops After Report Says It’s Behind Microsoft’s AI Spending Delay, As Investors Turn To EarningsIREN -11.2%MSFT +6.7%
  4. Optics & networkingMarvell to buy Lumentum in $115 billion all-stock dealMRVL -7.1%LITE -7.8%
  5. AI chips & foundryMicron Technology And 2 AI Chip Stocks To Improve Your PortfolioMU -7.0%
  6. Memory & storageSeagate Sinks 8%, Western Digital Down 6% on Election, Memory Price WorriesSTX -8.1%WDC -6.8%

Markets

The S&P 500 rose 1.6%, the Nasdaq 100 rose 1.0% and chip stocks lagged (-2.8%). Asia had a mixed session: KOSPI -5.3%, Taiwan TAIEX -3.2%, Nikkei 225 -1.8%, Hang Seng +3.7%. In Korean memory, SK hynix fell 0.1% and Samsung -0.7%. The US 10-year yield fell 6bp to 4.89%; oil +1.7%, VIX 16.7.

US

S&P 500+1.6%
Nasdaq 100+1.0%
Semiconductors-2.8%
Utilities+0.4%

Asia

KOSPI5,384-5.3%
Taiwan TAIEX41,575-3.2%
Nikkei 22561,078-1.8%
Hang Seng24,797+3.7%

Rates & macro

US 10-year yield 4.89%-6bp
US dollar index 101.54+0.0%
WTI oil 89.60+1.7%
VIX 16.72+0.7%
Bitcoin 79,977-0.5%

The AI chain today average move · day / week

AI chips & foundry-4.2%-12.6%
Memory & storage-5.1%-16.4%
Optics & networking-3.2%-15.7%
Servers, racks & components-3.0%-12.5%
Power & grid-3.8%-6.8%
Data centers, cooling & build speed-7.5%-12.2%
Hyperscalers & AI spending+3.1%-2.7%
Neoclouds, bonds & AI financing-9.0%-21.0%
AI models & applications-1.1%-11.1%
Robotics & physical AI-0.6%-4.4%
Materials+1.0%-5.0%

AI chips & foundry -4.2%

Chip stocks -4.2% on the day (3 of 40 up), -12.6% on the week. Hanmi Semiconductor led (+3.4%) and Cohu lagged (-12.1%).

Chip Testing & Burn-in -8.2% Stood out today

Chip Testing & Burn-in stocks -8.2% on the day (0 of 5 up), -12.7% on the week. Cohu lagged (-12.1%).

Memory & storage -5.1%

Memory and storage stocks -5.1% on the day (0 of 7 up), -16.4% on the week. Seagate lagged (-8.1%).

Optics & networking -3.2%

Optics and networking stocks -3.2% on the day (4 of 19 up), -15.7% on the week. Eoptolink led (+13.3%) and Credo lagged (-9.6%).

Fiber, Cable & Connectors -6.2% Stood out today

Fiber, Cable & Connectors stocks -6.2% on the day (0 of 4 up), -9.4% on the week. Sumitomo Electric lagged (-7.2%).

AI Networking -2.2% Stood out today

AI Networking stocks -2.2% on the day (2 of 6 up), -11.9% on the week. Arista Networks led (+5.0%) and Credo lagged (-9.6%).

Servers, racks & components -3.0%

Server and component stocks -3.0% on the day (4 of 27 up), -12.5% on the week. Navitas Semiconductor led (+9.0%) and Vicor lagged (-11.1%).

Power & grid -3.8%

Power and grid stocks -3.8% on the day (10 of 50 up), -6.8% on the week. Eos Energy led (+12.6%) and MasTec lagged (-15.4%).

Data centers, cooling & build speed -7.5%

Data center, cooling and builder stocks -7.5% on the day (4 of 22 up), -12.2% on the week. Jentech Precision led (+6.9%) and Sterling Infrastructure lagged (-21.5%).

Hyperscalers & AI spending +3.1%

Hyperscaler stocks +3.1% on the day (4 of 5 up), -2.7% on the week. Microsoft led (+6.7%). The news was mostly about deals and contracts.

Neoclouds, bonds & AI financing -9.0%

Neocloud stocks -9.0% on the day (0 of 5 up), -21.0% on the week. IREN lagged (-11.2%).

AI models & applications -1.1%

AI software and security stocks -1.1% on the day (15 of 35 up), -11.1% on the week. Recursion Pharmaceuticals led (+5.4%) and Datadog lagged (-14.4%).

Robotics & physical AI -0.6%

Robotics stocks -0.6% on the day (20 of 45 up), -4.4% on the week. Ouster led (+15.7%) and Kratos Defense lagged (-12.3%).

Materials +1.0%

Materials stocks +1.0% on the day (17 of 25 up), -5.0% on the week. SQM led (+7.2%) and AXT lagged (-7.4%).

Policy & regulation

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

Data & what's coming

  • H100 rental price: +1.9% over 7 days.

Next 7 days

  • 11-05EarningsSony Group (6758.T)
  • 11-05EarningsApplied Optoelectronics (AAOI)
  • 11-05EarningsAir Products (APD)
  • 11-05EarningsCummins (CMI)
  • 11-05EarningsCore Scientific (CORZ)
  • 11-05EarningsDenison Mines (DNN)

What it means for stockholders

Memory. Memory lagged (-5.1%). One weak day doesn't change a tight HBM market; watch contract prices, not the tape.

Data center developers & builders. Local pushback is now a real risk to build speed: projects are being delayed, scrapped or taxed. Favour developers and contractors with permits and power already secured, and watch for the same headlines spreading to new states.

Rotation. Money rotated into hyperscalers & ai spending (+3.1%) and out of neoclouds (-9.0%). That is a shift inside AI, not an exit.

Neoclouds. Financing is the swing factor. The stocks fell, so the market is pricing funding risk: favour names that pay for growth from cash flow or have long-term contracts with investment-grade buyers.

Past days (15)

Built automatically from 1036 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.