Uses of Index Futures

Index futures are standardized contracts that obligate the buyer to purchase, and the seller to deliver, a specified value of a stock index at a predetermined price on a future date. In India, popular indices include NIFTY 50 and S&P BSE Sensex, and contracts are traded on exchanges such as NSE and BSE.

The contract size is expressed in terms of a multiplier (e.g., ₹75 per index point for NIFTY). The futures price reflects market expectations of the index level at expiry, adjusted for cost of carry, dividend yield and interest rates.

For the exam, remember that the futures price is quoted in index points, not rupees, and the monetary exposure is obtained by multiplying the point difference with the contract multiplier.

• Key terms – Contract multiplier: rupees per index point.
• Key terms – Expiry: the date on which the contract is settled.

Hedging is the process of reducing price risk in an existing portfolio by taking an opposite position in a derivative. An investor holding a basket of equities can sell index futures to lock in the current market value of the basket, protecting against a market downturn.

Because the futures contract moves almost one‑to‑one with the underlying index, the hedge is efficient and requires only a margin deposit, not the full cash outlay. This makes hedging cost‑effective for mutual funds, portfolio managers and large institutional investors.

In the NISM exam, you may be asked to select the best hedging tool for a given portfolio. Remember that index futures provide a *perfect* hedge only when the portfolio’s beta is close to 1 and the contract’s expiry aligns with the investment horizon.

• Typical hedger – large equity fund.
• Goal – preserve portfolio value, not to generate profit.

Speculators seek profit from anticipated price changes without holding the underlying securities. By buying (going long) or selling (going short) index futures, they can leverage their capital because only a margin is required.

Leverage amplifies both gains and losses. For example, a 5% move in the index can translate into a 20% or higher return on the margin posted, depending on the margin percentage set by SEBI and the exchange.

Exam questions frequently present a scenario where an investor expects the market to rise and asks which derivative best captures that view. The correct answer will be a long position in index futures, not a direct equity purchase, because of lower capital requirement.

• Risk – unlimited on the short side.
• Margin – typically 10‑15% of contract value for Indian indices.

Arbitrage exploits price mismatches between the index futures and the underlying spot index or between futures of different expiries. When the futures price deviates from its fair value, traders can lock in a risk‑free profit by simultaneously buying the cheaper instrument and selling the expensive one.

Two common types are cash‑and‑carry arbitrage (when futures are overpriced) and reverse cash‑and‑carry (when futures are underpriced). The profit is the difference after accounting for transaction costs and the cost of carry.

In NISM questions, you may be given the spot index, futures price, risk‑free rate and dividend yield, and asked to compute the fair futures price. Recognising that arbitrage forces the market back to equilibrium is crucial.

• Key condition – no net market exposure after the offsetting trades.
• SEBI rule – arbitrageurs must adhere to position limits.

Portfolio managers use index futures to quickly adjust the beta exposure of a fund without buying or selling large numbers of individual stocks. For instance, a fund can increase its market exposure by buying futures, or reduce it by selling futures, thereby rebalancing the portfolio efficiently.

This technique is especially useful during market volatility when transaction costs of trading the underlying securities would be high. Futures also enable tactical asset allocation across different market segments (e.g., shifting from large‑cap to mid‑cap exposure) with minimal capital outlay.

Exam‑wise, you may be asked which instrument allows a fund manager to change market exposure in a single trade. The answer is index futures, because they provide a direct, liquid, and cost‑effective way to modify beta.

• Benefit – rapid exposure change.
• Consideration – monitor margin and mark‑to‑market daily.

All index futures positions are subject to daily mark‑to‑market (MTM). Gains or losses are settled in cash each trading day, and the margin account is adjusted accordingly.

If the MTM loss exceeds the available margin, a margin call is issued and the trader must top up the account immediately. Failure to meet the call results in forced liquidation by the exchange.

For the exam, remember that SEBI mandates a minimum initial margin (usually 10‑15% of contract value) and a maintenance margin (typically 5‑8%). Monitoring these limits is essential to avoid unexpected position closures.

• Key practice – set stop‑loss orders to limit MTM losses.
• Key practice – keep excess cash in the margin account.

SEBI regulates index futures under the Securities Contracts (Regulation) Act, 1956 and the Commodity Derivatives Regulations, 2019. It prescribes position limits, margin requirements, and reporting obligations for participants.

Position limits prevent market manipulation; for NIFTY futures, the aggregate long or short position of a single entity cannot exceed a certain percentage of the total open interest (currently around 5%).

Exam questions may ask about the purpose of these limits or the consequences of breaching them. The correct answer will reference SEBI’s role in ensuring market integrity and protecting investors.

• Compliance – daily reporting of large positions to the exchange.
• Penalty – fines, suspension, or cancellation of trading rights.