Hedging Real Exposures · Futures Trading Guide

Index futures can reduce a portfolio’s broad market exposure without selling every holding. The hedge is an estimate whose effectiveness must be measured.

Define the exposure being reduced

A broad index hedge addresses a portfolio’s sensitivity to that index. It does not directly remove company specific risk, currency risk or every sector exposure. Estimate beta over a relevant period and understand how unstable it can become. A portfolio that differs greatly from the index may require a different hedge or a more cautious interpretation.

Calculate a target rather than a certainty

Assume a fictional portfolio is worth $500,000 with estimated beta of 1.2 to a selected index. A full beta hedge targets $600,000 of short index exposure. If each futures contract represents $50,000 notional, the simple estimate is twelve short contracts. A partial hedge would use a deliberately smaller target. These are hypothetical inputs, not a recommendation for a real account.

Compare combined outcomes

If the index falls 5% and the portfolio behaves exactly according to the assumed beta, the portfolio loses $30,000 while the short futures gain approximately $30,000 before costs and basis changes. If the portfolio instead loses 8%, its $40,000 loss exceeds the estimated hedge gain by $10,000. A rally can produce futures cash losses even while the underlying investments appreciate.

Manage cash and ending conditions

Futures variation may require cash before gains in the stock portfolio are realised. Specify available reserves, expiry management, rebalancing triggers and when the hedge is removed. Track the combined portfolio result and transaction costs. Judging the short future alone as a failed trade during a rally ignores the purpose of the hedge, but leaving it after selling the shares creates a new speculative exposure.

Try it yourself

A $300,000 portfolio has estimated beta 0.8. Each fictional contract represents $40,000. How many short contracts give the simple full beta hedge?

Show the worked answer

The target is $240,000, requiring six short contracts. Model error, changing beta and basis can leave residual exposure.

Further reading

Educational material. Prices, margins and strategy examples are hypothetical unless explicitly identified as contract specifications. They are not trade recommendations. Futures losses can exceed deposited collateral. Product terms and eligibility vary by venue and jurisdiction.

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