The market keeps moving the trillion dollar ceiling

People have been saying companies are getting “too big” for decades.

In 2000, $1 trillion for a public company sounded almost impossible.

Apple became the first U.S. company to reach $1 trillion in market value in August 2018.

It took only about two years for Apple to reach $2 trillion.

It crossed $3 trillion in 2022.

Microsoft and Nvidia eventually joined the multi-trillion-dollar club.

Now the conversation has moved toward companies approaching $6 trillion.

The number sounds ridiculous because humans are terrible at intuitively processing numbers this large.

But there is a simple mathematical problem with the argument.

Going from $1 trillion to $2 trillion requires the stock to double.

Going from $2 trillion to $3 trillion requires a 50% gain.

$3 trillion to $4 trillion requires 33%.

$4 trillion to $5 trillion requires 25%.

$5 trillion to $6 trillion requires only 20%.

At $10 trillion, another trillion dollars would represent just a 10% increase.

At $20 trillion, another trillion would be only 5%.

So “another trillion dollars” eventually becomes a completely ordinary percentage move.

That doesn’t mean every trillion-dollar company deserves its valuation.

It means the dollar figure by itself tells you almost nothing.

A company’s market capitalization is ultimately the market value of its future earnings and cash flows.

If a company grows its revenue, margins and earnings for decades while the global economy grows around it, there is no mathematical law preventing its market value from reaching numbers that would have sounded absurd to investors 25 years earlier.

The history is already there.

Apple was worth roughly $1 billion when it went public in 1980.

Today, the largest companies are worth millions of times more.

The same thing happened to the overall stock market.

The S&P 500’s total market capitalization was measured in trillions of dollars decades ago.

Today, it is measured in tens of trillions.

The economy itself is also vastly larger.

Nominal U.S. GDP was about $5.5 trillion in 1990.

It is now above $30 trillion.

Prices, revenues, wages and corporate profits are all measured in a much larger nominal economy.

So the question isn’t whether $6 trillion “sounds too big.”

The question is what someone is paying for that $6 trillion.

That’s where the argument changes.

Nvidia can reach an enormous market capitalization without the market being irrational if its future earnings justify it.

It can also become wildly overvalued at a much lower market cap if investors price in unrealistic growth.

The number on the market-cap screen cannot answer that question.

Earnings can.

Free cash flow can.

Margins can.

Growth can.

Competition can.

Capital requirements can.

And the multiple investors are willing to pay for all of those things can.

The same mistake keeps appearing every time the market crosses another psychological threshold.

First $100 billion looked enormous.

Then $500 billion.

Then $1 trillion.

Then $2 trillion.

Then $3 trillion.

Now investors are arguing about $5 trillion and $6 trillion.

The ceiling keeps moving because the economy keeps growing and percentages compound.

Twenty-five years from now, a $10 trillion company may look enormous.

It may also look completely normal.

That doesn’t mean the next giant will be fairly valued.

It means “it’s worth six trillion dollars” isn’t an argument against the stock.

The only useful question is what six trillion dollars is buying.