Futures Hedging: How Long-Term Equity Investors Can Protect a Portfolio

Market corrections come around sooner or later. When a global shock hits Dalal Street, many investors either sell good long-term holdings in a panic, often near the bottom, or simply watch a large part of their portfolio’s value disappear. There is a third option, widely used by institutions: hedging.

Hedging works like insurance. A short position in Nifty futures can offset part or all of a fall in your portfolio, without selling your shares. You keep your holdings, your dividends and your long-term holding period for tax. This guide explains how it works and what it really costs.

1. Why short futures instead of buying put options?

Buying out-of-the-money (OTM) put options is the most common instinct in a sell-off. Puts are useful disaster insurance, but they have a cost that is easy to underestimate: time decay.

• The problem with puts: if the market drifts sideways or falls slowly, the premium you paid can shrink to nothing by expiry, even though you were right to be cautious.
• How futures differ: a short Nifty futures position gains about one point for every one-point fall in the index, with no premium to lose to time decay. The trade-off is that it also loses one point for every point the market rises, so a full hedge gives up your upside while it’s in place.

Puts cap your downside and keep your upside, for a premium. Futures neutralise both directions, at little upfront cost but with margin to manage. Our guide to options buying vs selling explains how option premiums and time decay work.

2. Understanding portfolio beta

Before hedging, you need to know how your portfolio tends to move compared with the Nifty 50. That’s measured by beta.

• Beta of 1: the portfolio tends to move in line with Nifty. If Nifty falls 5%, it tends to fall about 5%.
• Beta above 1, say 1.2: the portfolio swings more than the index. A 5% Nifty fall tends to mean about a 6% fall. Portfolios heavy in small and mid-caps, metals or banks often have higher betas.
• Beta below 1, say 0.8: the portfolio swings less. A 5% Nifty fall tends to mean about a 4% fall. FMCG and pharma-heavy portfolios often have lower betas.

Your portfolio’s beta is the weighted average of each stock’s beta. Betas are estimated from past prices, so treat them as approximate and check them from time to time.

3. The hedge ratio: how many lots to short?

Number of lots to short = (Portfolio value × Portfolio beta) ÷ Value of one Nifty futures contract

Value of one contract = Nifty futures price × lot size. Since January 2026, one Nifty lot is 65 units, so at an illustrative Nifty level of 24,000, one contract is worth 24,000 × 65 = ₹15,60,000.

Because you can only trade whole lots, you’ll rarely get an exact hedge. Round to the nearest lot and accept being slightly over- or under-hedged. With one Nifty contract worth about ₹15–16 lakh, a portfolio much smaller than that can’t be hedged with Nifty futures without over-hedging.

4. Worked example: hedging a ₹30 lakh portfolio

Suppose you hold a diversified portfolio worth ₹30,00,000 with a beta of 1.0, and you’re worried about a correction over the next couple of months. Nifty is at an illustrative 24,000.

Step	Calculation	Result
1. Portfolio exposure	₹30,00,000 × beta 1.0	₹30,00,000
2. One contract’s value	24,000 × 65	₹15,60,000
3. Lots needed	₹30,00,000 ÷ ₹15,60,000	1.92, so 2 lots
4. Position	Sell 2 lots of Nifty futures (current or next month)	Hedges about ₹31.2 lakh
5. If Nifty falls 10% (to 21,600)	Portfolio: −₹3,00,000. Futures: 2 × 65 × 2,400 = +₹3,12,000	Net about +₹12,000, before costs

In practice the result won’t be this neat. Your portfolio won’t move exactly in line with its beta, the futures price can differ from the spot index, and brokerage, taxes and the margin you keep aside all have a cost. A hedge reduces your exposure to market moves; it doesn’t remove every rupee of risk.

With a beta of 1.2, the same ₹30 lakh portfolio would need (₹30,00,000 × 1.2) ÷ ₹15,60,000 = 2.3 lots, so in practice 2 lots, a slight under-hedge.

5. The hidden cost: mark-to-market (MTM) margin

Futures are settled daily. If you’re short Nifty futures and the market rises, your shares gain in value, but your futures position shows losses that must be paid in cash at the end of each day. Your broker will ask for more margin. If you can’t add it in time, the broker can close your hedge, often at a loss and just when you wanted protection.

Before hedging, keep enough cash or liquid funds aside to cover a sharp rally of several percent against your short position.

Frequently asked questions

Do I need cash to short Nifty futures if I already own shares?

You can usually pledge shares from your demat account as collateral for margin, after a haircut on their value. But under exchange rules, at least 50% of the margin generally has to be in cash or cash equivalents, such as liquid funds, so you can’t rely on pledged shares alone. Daily MTM losses also have to be paid in cash.

Should I keep my portfolio hedged all the time?

A permanent full hedge rarely makes sense. If your portfolio is fully hedged, you give up most of the market’s return while still paying for margin, rollovers and transaction costs. That defeats the purpose of owning equities long term. Investors who hedge usually do it selectively and partially, for example around periods of unusually high risk. No indicator reliably predicts when a correction will come, so a hedge is best thought of as insurance you choose to buy, not a forecast.

What is rolling over a hedge?

NSE’s monthly Nifty futures expire on the last Tuesday of the month. If you want to stay hedged beyond expiry, you close the expiring short position and open a new short in the next month’s contract at the same time. This is called rolling over, and each rollover adds transaction costs.

Can I over-hedge my portfolio?

Yes, and it turns a hedge into a bet against the market. Say you have a ₹10 lakh portfolio and short one Nifty lot worth about ₹15.6 lakh. You’re then short about ₹5.6 lakh more than you own. If Nifty rises 10%, your portfolio gains about ₹1 lakh, but the futures lose about ₹1.56 lakh, leaving you worse off overall.

How are gains from a futures hedge taxed in India?

Gains and losses from equity futures and options are generally treated as non-speculative business income, taxed at your slab rate, not as capital gains. That creates a mismatch for hedgers: a gain on your futures is business income, while a fall in your shares is a capital loss that can’t be set off against business income. Business losses from F&O also can’t be set off against salary income. Tax rules change and depend on your situation, so check with a tax adviser before hedging.

The bottom line

A Nifty futures hedge lets you protect a portfolio against a market fall without selling your shares. Work out your beta, size the hedge in whole lots, keep cash aside for daily MTM, and remember that a hedge also gives up upside and has tax and cost consequences. Used selectively, it’s a risk-management tool, not a way to make extra returns.

This article is for education only and is not a recommendation to buy, sell or hedge any security or derivative. Nifty levels and portfolio values in examples are illustrative. Tax treatment depends on individual circumstances; consult a tax adviser. Derivatives carry a high risk of loss: SEBI’s study found that 9 in 10 individual traders in equity F&O lost money.