It is a system that must survive the shock.
Financial markets often look strong… until they suddenly aren’t.
Recent geopolitical tensions remind us that the global economy relies on fragile balances.
The Strait of Hormuz, for example, is one of the most critical chokepoints in the world: nearly 20% of global oil supply passes through it every day. Any disruption could trigger a major energy shock.
History shows that energy shocks can quickly turn into economic crises… and then into financial market crashes.
In the 1970s, oil shocks led to high inflation, recession in many developed countries, and severe market volatility.
No one knows what the next crisis will be:
- geopolitical conflict
- energy shock
- banking crisis
- pandemic
- unexpected economic event
But one thing is certain:
Stock market crashes are a normal part of investing.
The real question is not whether a crash will happen.
The real question is:
Is your portfolio built to survive one?
The Economy Still Runs on Energy
We often forget that the real economy is built on energy.
Producing, transporting, farming, building, heating — all require energy.
In many ways, the economy is simply the transformation of energy into goods and services.
Even today, oil still plays a central role in the global system.
-Transportation depends on oil.
-Agriculture depends on fertilizers linked to gas and hydrocarbons.
-Industry depends on electricity and fuels.
-Global trade depends on shipping and logistics.
An energy shock can quickly become an economic shock… and then a stock market crash.
Markets don’t fall only because of finance.
They fall when the real world is under stress.
Market Crashes Are Normal
Many investors think a crash is rare.
It isn’t.
Over the last decades, markets have gone through several major downturns:
- 2000 — dot-com crash
- 2008 — global financial crisis
- 2020 — pandemic crash
- 2022 — inflation and rate hikes
During these periods, markets dropped sharply.
A stock portfolio can lose:
- 30%
- 40%
- sometimes 50% or more
This is uncomfortable — but not abnormal.
Long-term investors must expect volatility.
The goal is not to avoid crashes.
The goal is to build a portfolio that can survive them.
A Calm Portfolio Is Not Built by Chance
A resilient portfolio does not happen by accident.
Yet the financial world constantly pushes investors to do the opposite.
Every day there are new ideas:
- a stock with huge potential
- a hot sector
- a trending theme
- a momentum trade
- a “must-own” asset
Financial media and influencers often highlight interesting opportunities.
But these ideas are usually presented in isolation, without considering the overall portfolio.
Buying a promising asset is not necessarily wrong.
But stacking positions without a coherent strategy makes a portfolio fragile.
A good investment is not just a good asset.
It is an asset that fits your system.
A strong portfolio is built as a structure, not as a collection of ideas.
A Portfolio Is a System
A portfolio is not a list of stocks.
It is a long-term structure.
Each asset should have a role:
- performance
- stability
- diversification
- protection
- liquidity
When markets go up, this structure may look unnecessary.
When volatility arrives, it becomes essential.
A calm portfolio is not designed to avoid crashes.
It is designed to survive them.
Fragile Assets, Robust Assets, and Antifragility
Not all assets react the same way to stress.
Some are fragile.
They perform very well in good conditions… but break under pressure.
Others are more robust because they rely on solid fundamentals.
Author Nassim Nicholas Taleb popularized the concept of antifragility, describing systems that resist shocks — or even benefit from them.
This idea applies perfectly to investing.
A portfolio that depends on a perfect scenario can be very profitable…
but also very vulnerable.
The more specialized an asset is, the more fragile it tends to be.
Examples of fragile assets:
- highly leveraged companies
- speculative stocks
- overvalued sectors
- trendy themes
- concentrated bets
Examples of more robust assets:
- diversified portfolios
- broad index funds
- strong companies
- cash reserves
- high-quality bonds
A portfolio built only for maximum performance may look impressive…
until stress hits.
A portfolio built to last may be less spectacular —
but far more resilient.
Performance attracts.
Robustness protects.
Antifragility endures.
Media Noise During a Crash
Market crashes never happen quietly.
During crises, the media environment becomes extremely negative:
- alarming headlines
- recession fears
- worst-case scenarios
- predictions of collapse
This atmosphere makes rational decisions harder.
Even disciplined investors start to doubt.
And this is when the most expensive mistakes happen:
- selling at the bottom
- stopping investments
- leaving the market forever
The Real Risk Is Quitting
The biggest danger is not a crash.
The biggest danger is giving up.
Many investors start during good times.
Then comes the first real downturn.
-Fear appears.
-Losses hurt.
-Confidence disappears.
Some sell everything and never come back.
They miss decades of growth.
Experience Creates Calm
Time is an advantage in investing.
The longer you stay invested:
- the more cycles you see
- the more volatility you accept
- the calmer you become
- the better your decisions are
The first crash is usually the hardest.
But with experience, you realize that crashes are part of the journey.
Calm does not come from avoiding crises.
It comes from surviving them.
The Goal Is to Still Be Here in 10 Years
Investing is not about next year.
It is about still being in the market:
- in 10 years
- in 20 years
- in 30 years
Time allows:
- experience
- discipline
- compounding
- growth
A fragile portfolio may perform well for a while…
but it increases the chance of panic.
A resilient portfolio keeps you invested.
And staying invested makes the difference.
The Purpose of Portefeuille Serein
This is also the goal of Portefeuille Serein.
To share experience, ideas, and long-term thinking to help build stronger portfolios from the start.
Experience is the best teacher — but it can be expensive during a crash.
-Understanding the role of each asset,
-building a coherent strategy,
-and accepting that crises are part of investing
-can prevent costly mistakes.
A calm portfolio does not avoid crashes.
It allows you to go through them with clarity —and with confidence.
If these ideas resonate with you, you can follow Portefeuille Serein.
I regularly share thoughts about long-term investing, risk management, and building portfolios designed to last.
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