Hedging

Hedging is a risk management technique that involves taking an offsetting position in a financial instrument to reduce exposure to adverse price movements in an existing position or anticipated future transaction. The purpose of a hedge is not to generate a profit on the hedging instrument itself, but to limit potential losses if the market moves in an unfavourable direction. As a result, hedging typically reduces both the potential downside and the potential upside of the combined position.

A wide range of financial instruments can be used to hedge, including options, futures, ETFs, and stocks. The most effective hedge involves an instrument that has a high correlation with the position being hedged: the more closely the hedging instrument moves in relation to the underlying exposure, the more accurately it offsets adverse price movements. Where a direct hedge on the same underlying is unavailable or cost-prohibitive, a proxy hedge can be used, where a related instrument with a sufficiently high correlation provides meaningful risk reduction.

Common approaches include buying put options to protect against a fall in the value of a stock holding, using futures to lock in a price for a future purchase or sale, and using short positions in ETFs or index futures to offset broad market exposure. Each approach involves a trade-off between the cost of the hedge and the degree of protection it provides.

Hedging is a risk-management tool: its purpose is to reduce exposure to adverse price movements, distinct from volatility which is the measure of how much prices fluctuate in the first place. Hedging is a fundamental function of financial markets and one of the primary reasons derivatives were developed. By allowing participants to transfer unwanted risk to those willing to bear it, hedging improves the efficiency of capital allocation and allows firms to take on activities they could not otherwise sustain. A commodity producer that can lock in a sale price for its future output using futures contracts can plan its business with greater certainty. An asset manager that hedges currency exposure can focus on security selection without being distorted by exchange rate movements.

Market makers also use hedging extensively. When a market maker provides liquidity by, for example, selling options to a counterparty, it acquires a risk position as a result. It will typically hedge the resulting exposure using the underlying instrument or related derivatives, allowing it to continue posting two-way prices across a wide range of instruments without accumulating large directional risk. In this way, hedging is not only a tool for managing investment risk but a core part of how market makers operate.

Suppose a portfolio manager holds 10,000 shares of a European technology company, trading at €80 per share, a position worth €800,000. Expecting short-term uncertainty around an earnings announcement but wishing to keep the long-term holding, the manager buys put options with a €75 strike and one month to expiry, at a premium of €2 per share, for a total cost of €20,000. If the stock falls to €65, the shares lose €150,000 in value but the puts gain approximately €100,000, reducing the net loss to €50,000 plus the premium paid. If the stock rises to €90, the puts expire worthless, but the €100,000 gain on the shares more than covers the €20,000 premium cost.

For more on how expected future price movements affect the cost of hedging instruments, see our explainer on Volatility.