Is a Stock Market Crash Coming? What History Actually Tells Us

"Is a stock market crash coming?" It's one of the most searched questions in finance, and it spikes every single time markets wobble. The honest answer is nobody knows, not us, not any fund manager, not any headline promising to call the top.

But there is something we can look at that's more useful than a prediction: valuation.

What history actually shows

The Shiller CAPE ratio smooths out ten years of inflation-adjusted earnings to show what investors are actually paying for the market right now, relative to its own long-term history. The historical median sits around 17. Today it's sitting near double that.

The only two other times valuations reached similar territory were the late 1920s and the year 2000. That doesn't mean a crash is imminent, valuations can stay stretched for years. What it does mean is that anyone investing today without understanding where valuations sit is taking on more risk than they realise.

Why "when" is the wrong question

Trying to predict the exact timing of a crash is a losing game, even professional forecasters get it wrong more often than right. The more useful question isn't "when will it happen," it's "is my portfolio built to handle it whenever it does."

That's the idea behind anti-fragility. A fragile portfolio breaks under stress. A resilient one survives it. An anti-fragile one is structured to actually benefit from volatility and disorder, not just withstand it.

Building a portfolio that doesn't need to predict the top

At TMM, our approach starts with one rule: don't lose money. Not chasing the highest possible return, understanding what you stand to lose, and building around that first. It's the same valuation-aware thinking that sits behind our CAPE tracking, our Buffett Indicator work, and our weekly Signals & Noise coverage.

We've put this thinking into a full breakdown of what an anti-fragile portfolio actually looks like in practice, how it's structured differently from a standard buy-and-hold approach, and the principles behind positioning for uncertainty rather than trying to time it.

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FAQ

Does a high CAPE ratio mean a crash is coming?
Not directly. A high CAPE ratio indicates stretched valuations relative to history, which has historically been associated with weaker forward returns over the following decade, not a specific crash date.

How is an anti-fragile portfolio different from a diversified one?
Diversification spreads risk across assets. Anti-fragility goes a step further, structuring a portfolio so that volatility and disorder can actually work in its favour, not just be absorbed by it.

Should I sell everything if valuations are high?
This isn't personal advice, and TMM doesn't tell anyone what to buy, sell, or hold. Our content is general education only, always speak with a licensed adviser about your specific situation.

This blog post is for informational purposes only and does not constitute financial advice. Total Money Management | AFSL 568642.