Daily Brief
As of Monday, Sep 21 close

Tuesday, September 22, 2026

S&P 500 +1.55%Nasdaq +2.77%Our 523 +1.61% · 368 up, 149 down

LayersUtilities & Energy -0.4%Cooling +0.5%Construction +0.6%Services & Investment +0.7%Power Systems +1.0%Chip Making +1.9%Software & Design +2.3%Servers & Compute +2.4%Networking +2.6%Power Generation +2.9%Natural Resources +2.9%Other +3.4%Operators +4.0%Silicon Design +4.4%

MoversCRML +38.6%ARM +17.2%AXTI +14.1%·SBSW -4.5%SHMD -4.3%KGS -4.2%
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Written before the market opens. Every price and move in this brief is as of the close on Monday, Sep 21; company pages show live prices. The Buildout is a website built on agentic AI tools, currently in beta, and could have factual errors.

The tape

SPY rose 1.55% to $773.50 and QQQ gained 2.77% to $741.47. Across the 523-stock AI infrastructure universe, 368 names advanced, 149 declined, and 6 were flat, with an average move of +1.61%, about six basis points ahead of SPY. Silicon Design led segment performance at +4.43%; Utilities & Energy lagged at -0.43%. The standout was CRML (Critical Metals Corp.) at +38.6%, while SBSW (Sibanye Stillwater Limited) was the biggest decliner at -4.5%. Today’s calendar includes WOR (Worthington Industries, Inc.), which reports today, while SNX (TD Synnex Corp) and UEC (Uranium Energy Corp.) report Thursday.

What's happening

Digital Realty's latest survey indicated accelerating AI investment plans in Asia Pacific. DLR (Digital Realty Trust, Inc.) reported that more than half of Asia Pacific enterprises plan to increase AI investment by more than 25%. The survey is a demand signal for colocation and interconnection in a region that has been expanding data center capacity. It matters because APAC is a key growth market for AI infrastructure, and tenant investment intentions feed directly into capacity planning.

Solaris Energy Infrastructure announced a $1.0 billion senior notes offering due 2032. SEI (Solaris Energy Infrastructure, Inc.) said the notes are due 2032. It matters because access to capital is a gating factor for the energy infrastructure that AI data centers require.

ABM launched a technical training center aimed at semiconductor workforce development. ABM (ABM Industries Inc.) said the center will train technicians to support semiconductor manufacturing facilities. The initiative addresses a labor bottleneck in fab construction and operations. It matters because the AI buildout is constrained not just by capital but by available skilled labor for semiconductor facilities.

Supply chain read-through · News
Solaris Energy's $1.0 billion notes offering could support additional natural gas power infrastructure buildout for data center load. Gas engine and turbine suppliers such as CAT (Caterpillar Inc.) and CMI (Cummins Inc.) may see incremental orders if the proceeds flow into new capacity.
ABM's semiconductor training center could signal growing investment in skilled labor for semiconductor fabs. Facilities services and construction management firms such as EME (EMCOR Group, Inc.) and J (Jacobs Solutions Inc.) may see incremental labor-related demand as fab construction expands.
On watch

Worthington Industries reports today. WOR (Worthington Industries, Inc.) reports with consensus EPS of $0.751. WOR is not a direct AI infrastructure name, but its manufacturing and industrial products lines offer a small read on industrial demand. The report matters mainly as a check on the broader manufacturing economy around facility and equipment buildouts.

TD Synnex reports Thursday. SNX (TD Synnex Corp) reports September 24 with consensus EPS of $4.70. As one of the largest IT distributors, TD Synnex is a direct window into server, storage, and networking volumes, including AI hardware sold through channel partners. Its commentary on AI infrastructure demand and component availability will be a key data point for the segment.

Uranium Energy reports Thursday. UEC (Uranium Energy Corp.) reports September 24 with consensus EPS of -$0.039. Uranium fuel is a key input for nuclear power, which is part of the long-term power mix for AI data centers. The company's update on uranium pricing and contracting could inform how investors are thinking about nuclear's role in the AI power buildout.

Go to our Earnings Hub for full coverage and previews
The week ahead

UN General Assembly leads the macro calendar this week.

Macro calendar
Tue 22
UN General Assembly
Fed Williams Speech
Fed Jefferson Speech
Fed Barkin Speech
API Crude Oil Stock Change (Sep/18)
Wed 23
MBA 30-Year Mortgage Rate (Sep/18)
S&P Global Services PMI (Sep)
S&P Global Composite PMI (Sep)
S&P Global Manufacturing PMI (Sep)
Fed Barr Speech
EIA Crude Oil Stocks Change (Sep/18)
EIA Gasoline Stocks Change (Sep/18)
Thu 24
Fed Williams Speech
Fed Barkin Speech
Current Account (Q2)
Initial Jobless Claims (Sep/19)
Fed Hammack Speech
New Home Sales (Aug)
Fri 25
Fed Williams Speech
Durable Goods Orders Ex Transp MoM (Aug)
Durable Goods Orders MoM (Aug)
Fed Hammack Speech