Hedging against a stock market crash: puts, safe havens and their costs

What is hedging against a stock market crash?

A hedge is an investment position intended to offset potential losses or gains in a companion investment. A farmer who sells a harvest in advance locks a price, and gives up the benefit of a price rise. A hedge swaps an uncertain outcome for a known cost, which is the reason people buy one.

For a stock portfolio, a hedge means a position that gains when stocks fall. The protection is never free. It costs a premium, or it lowers your gain on a good day, or it ties up money in assets that earn little. Treat a hedge like insurance: it has a price, a term, and a purpose, and you decide whether the price is worth the purpose.

How does a put option protect a portfolio in a stock market crash?

A put option is a contract that gives the owner the right, but not the obligation, to sell at a price decided now. Take a $100,000 portfolio and a put with a floor of $90,000 that costs a $2,000 premium. If the portfolio falls 30% to $70,000, the put pays $20,000, and the portfolio plus put is worth $88,000 after the premium. The loss is capped at $12,000 instead of $30,000.

If the portfolio rises 10% to $110,000, the put expires without value, and the result is $108,000 after the premium, a gain of 8%. If the market stays flat, the premium leaves $98,000. The hedge cut the gain by 2 points. The figures are chosen to show the mechanism. Real premiums depend on term, strike, and market conditions, and they rise when fear rises, so quote the price before you plan around it.

What are the costs of hedging against a stock market crash?

Four costs appear. The premium is paid up front and lost if the put expires unused. Forgone upside lowers your gain when markets rise. Rolling costs recur, since a hedge has a term and must be renewed. Complexity is the fourth: a hedge you do not understand can fail when you need it. Add the yearly cost and compare it with the loss you cannot carry.

Counterparty risk also deserves a line. Contracts traded privately depend on the other side paying. Listed contracts reduce that risk and have their own rules. In either case, read the terms, and write the maximum cost in your plan. A hedge repeated for years can cost more than the crash it was bought against.

Which safe-haven assets can hedge a stock market crash?

Safe havens are assets that investors tend to hold when fear rises, such as high-quality government bonds, gold, and cash. They do not insure a portfolio the way a put does, but they can hold their value while stocks fall. A safe haven works by holding value, and a put works by paying out.

The guide on safe-haven assets in a crash compares gold, bonds, and cash by cost, risk, and behaviour. A safe haven can lag in a rally and can also fall in some crises, so test each one against your own horizon. Cash has the clearest behaviour and the lowest return.

How does capital preservation differ from hedging a stock market crash?

Hedging adds a position against a loss. Capital preservation shapes the whole portfolio around keeping what you have. It uses a larger share of cash and high-quality bonds, a smaller stock weight, and a clear floor for the value you must keep. The guide on capital preservation in a crash explains the approach.

The two ideas combine. A household near retirement may hold a low stock weight for preservation and add a small put for the tail risk. Preservation lowers the size of the exposure and hedging trims what remains. Start with preservation, because it carries no premium, and add a hedge only for the gap that remains.

How do you size a hedge against a stock market crash?

Start from the loss you cannot carry, not from the fall you fear. If a 15% loss would force you to sell your home or delay retirement, that loss is your limit. Hedge the part of the portfolio above it. Size the hedge to the loss you cannot carry, and leave the rest unhedged.

Next, set the budget: the share of the portfolio you will pay each year for protection. Then compare the quote with simpler options, such as raising cash by the same amount. If cash gives similar protection at lower cost, choose cash. Write the budget, the term, and the review date in your plan.

How can you test a hedge against a stock market crash?

Run three paths: a soft landing, a correction, and a crash. In each, write the portfolio result with the hedge and without it. The hedge earns its cost only if the crash result changes your decisions. The EQOS Asia Λ simulator shows these paths side by side before any money moves.

A 30-minute pre-diagnostic applies the same scoring to your exposure in Singapore, ASEAN, or Hong Kong. The EQOS Asia method page explains how a score is built. A hedge tested on three paths is a hedge you can explain in one sentence, and that is the standard worth meeting.

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About the author

Stéphane Jambu

President, EQOS Forecast Asia

Stéphane Jambu leads EQOS Forecast Asia and works as a consultant in e-commerce, search visibility, and AI. LinkedIn profile