Every market cycle develops its own form of insanity.

In the late 1990s, investors stopped valuing earnings.

They valued clicks.

In 2021, investors stopped valuing cash flow.

They valued narratives.

Today, many investors have stopped valuing businesses.

They value revenue multiples.

This creates one of the most dangerous environments in investing.

Because when investors pay 20x, 30x, 50x, or even 100x sales for a company, they are no longer investing in a business.

They are investing in a future that must unfold almost perfectly.

History suggests that rarely ends well.

Most investors see a revenue multiple and move on.

Few stop to consider the mathematics.

Imagine a company generating:

$1 billion of revenue

and trading at:

20x sales

Its enterprise value becomes:

$20 billion.

For investors to earn attractive returns, one of two things must happen:

Revenue grows dramatically.

Profit margins become extraordinary.

Ideally both.

The problem is that expectations become almost impossible to satisfy.

Let's assume:

Revenue = $1 billion

EV/Sales = 20x

Enterprise Value = $20 billion

Now assume the company eventually achieves:

20% EBITDA margins

which would be exceptional.

That produces:

$200 million EBITDA.

The company is effectively trading at:

100x EBITDA.

Even after reaching elite profitability.

The valuation problem becomes obvious.

The business may succeed.

The stock can still fail.

This is one of the most important distinctions in investing.

A company can be:

and still be a terrible investment.

The reason is simple.

Price matters.

The higher expectations rise, the lower future returns often become.

Many investors learn this lesson the hard way.

During the late 1990s:

Investors believed:

They were correct.

What they got wrong was valuation.

Many internet companies eventually became successful businesses.

Yet investors still lost money.

Why?

Because they paid prices that assumed perfection.

Reality simply couldn't keep up.

The same pattern appeared again.

Companies with:

achieved valuations in the billions.

Investors focused on projections.

Markets eventually focused on results.

The results were often disappointing.

When we examine many of the weakest-performing stocks in our database, a recurring pattern appears.

The companies often exhibit:

The combination can be dangerous.

The market focuses on future possibilities.

The fundamentals struggle to catch up.

The answer is behavioral.

Humans naturally extrapolate.

If revenue grows 50% this year:

Investors assume:

50% growth forever.

If a stock doubles:

Investors assume:

it will double again.

This creates a powerful psychological feedback loop.

Higher prices create more optimism.

More optimism creates higher prices.

Eventually expectations become detached from reality.

For a 20x sales company to justify its valuation, investors often require:

Growth must remain exceptionally high.

Margins must improve dramatically.

Competition must remain limited.

The market must continue assigning a premium multiple.

If any of these assumptions fail:

future returns can deteriorate rapidly.

One of the greatest investing paradoxes:

The better the story becomes,

the more dangerous the investment often becomes.

At the peak:

everyone knows the company.

everyone loves the company.

everyone owns the company.

Future buyers become scarce.

Future expectations become extreme.

The stock becomes vulnerable.

Many of history's greatest investors focus on a different equation.

Rather than asking:

"How great is this business?"

They ask:

"How much greatness is already reflected in the price?"

That question matters far more.

Because investing success is determined by the gap between:

expectations

and

reality.

We are not automatically bearish on high-growth companies.

Growth creates value.

Innovation creates value.

Disruption creates value.

But valuation still matters.

Our research consistently suggests that investors should become increasingly cautious when they encounter companies with:

The risk is not necessarily that the company fails.

The risk is that expectations become impossible to satisfy.

Many of the market's biggest future losers begin as the market's favorite stories.

Not because the businesses are bad.

Because the expectations become unsustainable.

The higher investors bid a stock above its economic reality, the smaller the margin for error becomes.

Great businesses can survive.

Great valuations rarely do.

That is why some of the most dangerous stocks in the market are often the ones everyone loves the most.