Every market cycle has a story.

In the late 1920s it was electrification.

In the late 1960s it was conglomerates.

In 1999 it was the internet.

In 2021 it was SPACs, electric vehicles, and software.

Today, it is artificial intelligence.

The question investors should be asking is not whether AI is real.

The question is whether investors are paying too much for it.

At The Oddsmaker, we focus on probabilities rather than predictions. When we compare today's market to the greatest speculative periods of the past century, one conclusion stands out:

The current market bears a much closer resemblance to 1999–2000 than many investors appreciate.

Today's valuation levels are among the most extreme in U.S. history.

The Shiller CAPE ratio sits near levels only seen during the dot-com bubble.

The Buffett Indicator, which compares total market value to GDP, is near all-time highs.

Perhaps most striking, the ten largest stocks now account for more than 40% of the S&P 500—surpassing concentration levels reached during the internet bubble.

This is not normal.

There is an important difference between today and 2000.

The leaders today are not speculative startups.

They are:

These businesses generate hundreds of billions of dollars in revenue.

They produce enormous free cash flow.

They possess fortress balance sheets.

Unlike 2000, today's market leaders are real businesses with real earnings.

This is the strongest argument against the bubble thesis.

The psychology.

The most powerful signal in markets is often not valuation.

It is investor behavior.

Recently, our factor work has shown investors aggressively rewarding:

Meanwhile, investors have largely ignored:

This pattern has appeared repeatedly near speculative peaks.

Investors stop asking:

"What is this worth?"

And begin asking:

"How high can this go?"

That shift is subtle.

It is also dangerous.

One of the most fascinating developments of 2026 is the coming SpaceX IPO.

To be clear:

SpaceX may be one of the greatest companies ever built.

Those are not the same thing.

Historically, some of the largest IPOs have occurred near major market peaks.

Great companies can still become poor investments when purchased at extraordinary valuations.

The SpaceX IPO may ultimately prove to be one of the most successful businesses in history.

It may also prove to be a liquidity event.

Those are not mutually exclusive outcomes.

Bubbles do not burst because they become expensive.

They burst because liquidity changes.

Many investors correctly identified the dot-com bubble.

The problem was timing.

They called it a bubble in:

They were right.

They were also early.

Being right too early can be indistinguishable from being wrong.

That is why investors should avoid all-or-nothing positioning.

The Oddsmaker is not interested in predicting market tops.

We are interested in finding asymmetric opportunities.

That means owning businesses with favorable odds and avoiding businesses with unfavorable odds.

Examples include:

These companies require near-perfect execution to justify current valuations.

The greater the expectations, the greater the potential disappointment.

The most important question facing investors today is not whether AI is transformative.

It probably is.

The question is whether future earnings growth is large enough to justify today's prices.

The market is currently betting that the answer is yes.

History suggests that when expectations become nearly perfect, even great companies can become disappointing investments.

That does not mean the bubble ends tomorrow.

It simply means the odds are becoming increasingly asymmetric.

And that is exactly where The Oddsmaker pays the closest attention.