Level 1 — Absolute Beginner

Nvidia makes computer chips. The chips help computers think. Jensen Huang started the company in 1993. He is the boss. He has led Nvidia for 33 years.

On Wednesday the board met. The board is the group of people who watch over a company. They talked about Mr Huang. Some reports say the board wants a new boss.

The news made the share price fall. The shares lost about 8 percent after the market closed. Over five days, the shares lost about 11 percent.

Nvidia has no new boss ready. There is no second leader. A law firm is now checking reports about Mr Huang's private life. The board says the company's secrets are safe.

chip

A very small part inside a computer that makes it work.

board

The group of people who watch over a company and make big decisions.

co-founder

A person who starts a company with other people.

share

A small part of a company that people can buy.

boss

The person who leads a company or a team.

report

A story in the news about something that happened.

law firm

A company of lawyers who give help with the law.

secret

Something that you do not tell other people.

Level 2 — Elementary

Nvidia is one of the most valuable companies in the world. It designs the chips that run artificial intelligence. Jensen Huang helped start the company in 1993 and has been its chief executive ever since.

On Wednesday evening the board held a meeting about his future. The Wall Street Journal reported that directors were getting ready to remove him. On Tuesday the board had already hired an outside law firm to run an investigation into reports about his personal conduct.

Investors reacted quickly. Nvidia shares fell about 8 percent in trading after the close on Wednesday, and they were down about 11 percent over five days. According to reports, more than 450 billion dollars of the company's market value has disappeared since the investigation became public.

The problem for Nvidia is that nobody else is obviously ready to take over. The company has no chief operating officer and no public succession plan, and Mr Huang has about 60 people reporting directly to him. The board has said it has no reason to believe that company secrets were put at risk.

chief executive

The most senior manager who runs a company.

artificial intelligence

Computer systems that can do tasks that usually need human thinking.

director

A member of the board that oversees a company.

investigation

A careful search for facts about something that may be wrong.

investor

A person or company that puts money into a business to make more money.

market value

The total price of all a company's shares added together.

succession plan

A plan that says who will take over a job when the leader leaves.

conduct

The way a person behaves.

Level 3 — Intermediate

Few corporate crises have arrived as abruptly as the one now facing Nvidia, the company whose processors have become the basic machinery of the artificial intelligence boom. On Wednesday evening its board of directors met to consider whether Jensen Huang, who co-founded the firm in 1993 and has run it for 33 years, should remain in charge.

The sequence of events has been unusually fast. On Tuesday the board retained the law firm Wachtell, Lipton, Rosen and Katz to conduct an investigation into reported personal conduct. By Wednesday, the Wall Street Journal was reporting that directors were preparing to remove him, and that an outside search firm had been asked to look for possible replacements.

Markets moved before any decision was announced. The shares slid roughly 8 percent in after-hours trading and were down about 11 percent across the week, with reports putting the loss of market value since the investigation became public at more than 450 billion dollars. For a company that supplies the large majority of the world's AI accelerators, that is a repricing felt well beyond its own shareholders.

What makes the moment awkward is governance rather than technology. Nvidia has no chief operating officer, no publicly identified heir and a chief executive with roughly 60 direct reports, an arrangement that worked while the founder stayed. The board, which has eleven seats and only one held by Mr Huang, has said it has no reason to believe that national security or corporate secrets were compromised. Lawmakers, meanwhile, have asked the administration to preserve records relating to the company's chip exports to China.

abruptly

Suddenly and without warning.

processor

The chip that carries out the instructions in a computer.

retain

To hire a lawyer or firm to work for you.

governance

The system of rules and people that controls how an organisation is run.

heir

The person expected to take over a position or property.

repricing

A change in what the market thinks something is worth.

accelerator

Specialised hardware that speeds up a particular kind of computing.

compromised

Put at risk, or made less safe or less secret.

Level 4 — Advanced

Founder-led companies tend to buy their stability on credit, and Nvidia has now been presented with the bill. On Wednesday evening the board of the world's most consequential chip designer convened to consider the tenure of Jensen Huang, who co-founded the firm in 1993 and has directed it, with unusual personal authority, for 33 years. Two days earlier the directors had retained Wachtell, Lipton, Rosen and Katz to examine reported personal conduct; by midweek the Wall Street Journal was reporting that they were preparing to remove him and had engaged an outside search firm to canvass successors.

The market's verdict preceded the board's. Shares fell roughly 8 percent after Wednesday's close and were down about 11 percent over five sessions, with reporting placing the erosion of market value since the inquiry surfaced above 450 billion dollars. Because Nvidia's accelerators underwrite the capital expenditure plans of virtually every large AI developer, the discount applied to its governance risk is transmitted outward: to the hyperscalers that queue for its silicon, to the data-centre operators financing purchases with investment-grade debt, and to index funds that hold the stock whether they wish to or not.

The vulnerability is structural rather than reputational. Nvidia operates without a chief operating officer, without a designated heir and with something close to 60 executives reporting directly to the chief executive, a configuration that concentrates institutional memory in one office. Its board comprises eleven seats, ten of them independent, and has stated that it has no reason to believe either national security or proprietary technology was compromised. That reassurance has not resolved the sharper question, which is whether a company that declined to plan for succession can improvise one under duress and in public.

A political dimension complicates the arithmetic. Senators have asked the administration to preserve records concerning Nvidia's chip exports to China, a reminder that the firm's commercial fortunes are entangled with licensing decisions it does not control. Whatever the board concludes, the episode has already made explicit what investors had been content to leave implicit: that the premium attached to a founder's judgment is also a liability, payable on demand, and that the absence of a plan is itself a plan with terms nobody chose.

tenure

The period during which someone holds an important position.

canvass

To approach people in order to seek support, opinions or candidates.

erosion

A gradual wearing away or reduction of something.

capital expenditure

Money a company spends on long-term assets such as buildings or equipment.

hyperscaler

A very large cloud computing company that operates data centres at huge scale.

proprietary

Owned privately by a company and protected from use by others.