How to Handle a Market Crash

To handle a market crash, prepare before it happens, do very little during it, and act decisively only on businesses you already understand. Keep enough cash that you are never a forced seller, reread your theses rather than the headlines, and treat falling prices on quality companies as a buying opportunity, not a disaster.

Where this fits: a crash is the ultimate test of thinking like an investor and of survival-first risk management, where the Five Criteria you used to buy become the reasons you hold.

Crashes are normal, not exceptional

The first thing to accept is that market crashes are a built-in feature of investing in equities, not a sign that something has gone wrong. Over an investing lifetime you should expect to live through several significant declines. Markets fall sharply from time to time; that is the price of admission for the long-term returns they offer.

This matters because the investor who treats a crash as a shocking anomaly panics. The investor who treats it as an expected, if unpleasant, event has already done the emotional work and can act calmly.

Declines of 10% happen often. Declines of 20% or more arrive regularly across decades. If you cannot tolerate that, you are either holding too much in equities or you have not yet internalised what investment risk actually is. Real risk is permanent loss of capital, not temporary quotation on a screen.

The damage in a crash is usually self-inflicted

A falling market does not, by itself, make you poorer in any permanent sense. A quoted price is an opinion offered on a given day. Your wealth only becomes permanently impaired when you convert a paper decline into a realised loss by selling.

The classic, devastating mistake is this sequence: prices fall, fear peaks, the investor sells near the bottom, then watches the recovery from the sidelines and buys back higher. That single behavioural error does more damage than any crash itself.

This is loss aversion and cognitive bias in action. The pain of watching a balance fall is so acute that selling to make it stop feels rational in the moment. It almost never is.

The market is a device for transferring money from the impatient to the patient. Crashes are when that transfer happens fastest.

Before the crash: prepare while it is calm

You cannot build composure in the middle of a 30% drawdown. You build it beforehand, when nothing is on fire. Three preparations matter most.

1. Hold a genuine cash buffer

Keep an emergency fund of several months’ expenses entirely outside your portfolio. Its purpose is not returns; it is to ensure you never have to sell investments at the worst possible time to pay a bill. Being a forced seller in a crash is how temporary declines become permanent losses.

2. Keep a buy list ready

Maintain a watchlist of high-quality businesses you understand and would happily own at the right price, with a rough idea of what that price is. When a crash arrives, you will not have time or composure to research from scratch. You will simply want to act on quality you have already vetted.

3. Set your allocation to one you can hold

Decide your equity allocation based on the worst decline you could stomach without selling, not the best-case return. An allocation you can hold through a crash beats a more aggressive one you will abandon at the bottom.

During the crash: do less, not more

When the crash actually hits, your instinct will be to act. Action bias is powerful precisely when it is most dangerous. The discipline is to do far less than you feel you should.

A short protocol for the worst days:

1. Stop watching the ticker. Constant price-checking amplifies panic and serves no decision you need to make today.
2. Reread your theses, not the news. Open your investment thesis for each holding. Ask whether the business, not the price, has changed.
3. Check the facts that matter. Is the balance sheet still sound? Is the moat intact? Can the company survive a prolonged downturn?
4. Act only on your buy list, only with spare cash. If quality is on sale and you have reserves, deploy gradually. Never with money you might need.

Situation	Weak response	Strong response
Portfolio down 25%	Sell to stop the pain	Reread theses; do nothing rash
A quality name down 40%	Panic	Check thesis; consider adding
A holding’s business broke	Hold and hope	Sell and move on
Scary headlines everywhere	Trade on them	Ignore the noise, check the facts

Notice that the strong response to a broken business is still to sell. Handling a crash well is not blind holding; it is distinguishing price declines from business declines. A crash is also when short-term price movements can be used in your favour, because the market is offering you quality at a discount.

Separating the price from the business

This is the single most important skill in a crash. Mr Market, Benjamin Graham’s famous metaphor, shows up every day offering a price. In a crash his prices are panicked and often absurdly low. You are free to ignore him or to take advantage, but you are never obliged to agree with him.

The question is never “has the price fallen?” It is “has the earning power of this business fallen?” A share price can halve while a company’s long-term earning power is barely touched. That gap is where opportunity lives.

Reground yourself in intrinsic value. If you have a sense of what a business is worth, from a discounted cash flow estimate or an FCF yield, a crash simply widens your margin of safety. A wider margin of safety is good news for a buyer, not bad.

After the crash: review honestly

When markets stabilise, do a calm post-mortem while the memory is fresh.

• What did you actually do? Did you sell in panic, freeze, or act on your plan?
• Was your cash buffer adequate? If you felt forced to sell, it was not.
• Did your allocation match your temperament? If you could not sleep, it was too aggressive.
• Which businesses proved resilient, and which revealed hidden fragility?

This review turns a frightening experience into a permanent upgrade to your process. Most investors learn more about their true risk tolerance in one real crash than in a decade of calm markets.

Frequently Asked Questions

Should I sell everything and wait for the bottom? Almost never. Timing the bottom requires being right twice, on the way out and the way back in, and most investors get at least one wrong. Selling into a crash usually locks in losses and causes you to miss the sharp recoveries that tend to follow. Staying invested in quality is the higher-probability path.

Is a market crash a good time to buy? For sound businesses bought at sensible prices, yes, provided you have cash you do not need and you are buying companies you already understand. A crash lowers prices on good and bad companies alike, which is precisely when a prepared buy list is valuable.

How much cash should I hold for a crash? Enough that you are never a forced seller. That means a separate emergency fund of several months of expenses outside your portfolio, plus whatever reserve lets you sleep. The exact figure is personal, but the principle is survival first.

How long do crashes usually last? It varies enormously and no one can predict it, so do not plan around a specific timeline. Historically markets have recovered their previous highs eventually, but recoveries can take months or years. Plan for your ability to wait, not for a forecast of when it ends.

Your Next Step

A crash is survivable, and even useful, if your process holds. Build the foundations now:

• Internalise survival-first: the math of staying in the game.
• Learn why patience is an underrated edge when prices fall.
• Size your emergency buffer with the emergency fund calculator.

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About the author: Cameron Hayes is a senior investor relations and finance professional who has worked in IR at Nasdaq Copenhagen-listed companies including Nilfisk and Maersk Drilling. He holds an MSc from Copenhagen Business School and a BCom from the University of Ottawa, and founded Gingernomics to teach individual investors the Five Criteria framework. More about Gingernomics.

The content on Gingernomics is for educational and informational purposes only and does not constitute financial advice. Always do your own research and consult a licensed financial advisor before making any investment decisions. Past performance is not indicative of future results.