Level 1 - Absolute Beginner

This week is a big week for money news. Two events will move the markets.

First, a company called Nvidia will say how much money it made. Nvidia makes computer chips for artificial intelligence.

Second, the head of the United States central bank will give a speech. His name is Kevin Warsh. He is new in the job.

People who buy and sell shares are waiting. They want to know if prices will go up or down.

market

a place where people buy and sell things like shares

company

a business that makes or sells things

chip

a very small part inside a computer that makes it work

bank

a place that keeps and lends money

speech

a talk given to a group of people

share

a small part of a company that a person can own

price

the amount of money something costs

week

a period of seven days

Level 2 - Elementary

Investors are treating this week as a test of the stock market rally that has lasted much of the year. Two events stand out on the calendar.

On Wednesday, Nvidia reports its second quarter results. The company has guided to revenue of about 91 billion dollars, while analysts had expected around 87.2 billion. Because Nvidia sells the chips that power artificial intelligence, its numbers are read as a health check on the whole AI trade.

Then the Jackson Hole symposium opens on Thursday and runs to Saturday. It is the first one for Kevin Warsh, who became chair of the Federal Reserve in May. He has said he will not offer forward guidance, so investors cannot rely on hints about future rate moves.

The background is uncomfortable. Bond yields rose sharply this month, pushing the thirty year Treasury yield to its highest level since 2007. Higher yields raise borrowing costs for families and for companies spending heavily on AI infrastructure.

investor

a person who puts money into shares or businesses to earn more

rally

a period when prices rise steadily

revenue

the total money a company takes in from sales

analyst

an expert who studies companies and predicts their results

symposium

a meeting where experts discuss a subject

forward guidance

public hints from a central bank about future interest rates

yield

the return an investor earns on a bond, shown as a percentage

borrowing cost

the price of taking a loan, mostly the interest paid

Level 3 - Intermediate

The trading week that began on August 24 has been framed by investors as a referendum on the two assumptions holding up this year's equity rally: that artificial intelligence spending is still accelerating, and that borrowing costs will not rise far enough to make that spending unprofitable. Each assumption faces a scheduled test within seventy two hours.

The first arrives on Wednesday, when Nvidia reports second quarter results. Management has guided to roughly 91 billion dollars in revenue against a consensus estimate near 87.2 billion, an unusual gap that leaves the market focused less on whether the quarter is good than on what the forward guidance implies. Because Nvidia supplies the processors underpinning most large scale AI deployment, its outlook functions as a proxy for capital expenditure plans across the technology sector.

The second is the Jackson Hole symposium, which runs from Thursday to Saturday and is the first for Kevin Warsh since he took office as Federal Reserve chair in May. Warsh has explicitly ruled out issuing forward guidance, a break from a communication style markets have relied on for more than a decade. His keynote lands on Friday morning, the same session in which the July core personal consumption expenditures index, the Fed's preferred inflation gauge, is published.

The backdrop makes both events harder to read. Global bond yields climbed sharply through August, lifting the thirty year Treasury yield to a level not seen since 2007. That matters twice over: it raises the discount rate applied to the distant profits that justify high technology valuations, and it increases the real cost of the debt financing the data centres those valuations assume will be built.

referendum

a decisive test of whether something still has support

equity

ownership in a company, usually in the form of shares

consensus estimate

the average forecast produced by a group of analysts

proxy

something used as a stand in measure for something harder to observe

capital expenditure

money a company spends on long lasting assets such as buildings or equipment

keynote

the most important speech at a conference

inflation gauge

a statistic used to measure how fast prices are rising

discount rate

the rate used to convert future money into what it is worth today

Level 4 - Advanced

Few trading weeks arrange themselves quite so neatly around a single question. The equity rally that has defined 2026 rests on two load bearing propositions, and both are scheduled for examination between Wednesday and Friday: that artificial intelligence capital expenditure remains on an accelerating path, and that the cost of money will not rise far enough to render that expenditure uneconomic. Neither proposition has been seriously stress tested since the spring.

Nvidia's second quarter report on Wednesday supplies the first datapoint. Management guidance of approximately 91 billion dollars in revenue sits conspicuously above a consensus near 87.2 billion, a spread wide enough that a merely good print will be read as a disappointment. The consequential number is not the quarter but the outlook, because Nvidia's order book is the closest thing the market has to a forward reading on hyperscaler capital budgets. A cautious sentence in the guidance would be interpreted across the sector rather than within a single ticker.

Jackson Hole, convening Thursday through Saturday, supplies the second. It is Kevin Warsh's first as chair, and he has been unusually candid that he does not intend to furnish forward guidance, retiring an instrument successive chairs used to smooth expectations since the financial crisis. Removing that instrument does not eliminate uncertainty; it relocates it, forcing participants to price policy from incoming data rather than from official signalling. His Friday keynote is scheduled alongside the release of July core personal consumption expenditures, so the two will be parsed together whether or not they agree.

What sharpens both tests is the term structure of interest rates. A sustained August selloff in long dated government debt carried the thirty year Treasury yield to its highest level since 2007, and long yields bear on AI valuations through two distinct channels. The first is arithmetic: a higher discount rate compresses the present value of cash flows expected far in the future, which is where most of the sector's claimed value resides. The second is operational, since the data centre buildout is substantially debt financed, and the marginal project pencils out only at a certain cost of capital. Should Nvidia's guidance impress while long yields keep climbing, the market will have learned that its two pillars can move in opposite directions at once.

load bearing

carrying essential weight, so that failure brings down the whole structure

stress test

to examine something under difficult conditions to see whether it holds

print

a reported figure when it is published, in market shorthand

order book

the record of orders a company has received but not yet fulfilled

hyperscaler

a very large operator of cloud computing data centres

term structure

the pattern of interest rates across different lengths of borrowing