Futures contracts for hedging, speculation and arbitrage
This sub‑topic explains how equity futures are used for hedging, speculation and arbitrage. Understanding the purpose, mechanics and profit calculations of futures contracts is essential for the NISM Series VIII exam. The content links the concepts to SEBI regulations and real‑world Indian market practice.
Learning Objectives
- 1Define an equity futures contract and its key features.
- 2Explain how futures are employed for hedging, speculation and arbitrage.
- 3Calculate profit or loss on a futures position.
- 4Identify common exam traps related to futures usage.
What is an Equity Futures Contract?
An equity futures contract is a standardized agreement to buy or sell a specified number of shares (or a stock index) at a predetermined price on a future date. The contract size, tick size, expiry date and settlement procedure are defined by the exchange (e.g., NSE) and overseen by SEBI.
Because the contract is standardized, it is traded on the exchange, and both parties are required to post an initial margin. Daily price movements are settled through the mark‑to‑market process, where gains or losses are transferred to the trader’s margin account.
For the NISM exam, remember that futures are a *derivative* – its value derives from the underlying equity or index. The contract does not involve ownership of the underlying until delivery, which usually occurs on the last Thursday of the contract month.
- Standardised contract size (e.g., 75 Nifty points per contract).
- Initial and variation margin as per SEBI guidelines.
Using Futures for Hedging
Hedging with futures means taking an opposite position in the futures market to offset the price risk of an existing spot position. For example, a portfolio manager holding 10,000 shares of Tata Motors can sell an equivalent number of Tata Motors futures to lock‑in the current price.
The primary reason SEBI encourages hedging is to provide market participants a tool to manage price volatility without liquidating the underlying assets. The hedge becomes effective when the futures price moves in tandem with the spot price, resulting in opposite gains and losses that cancel each other.
Exam‑wise, you may be asked to identify the correct hedge ratio, calculate the number of contracts needed, or recognise why a hedge reduces but does not eliminate risk (basis risk remains). Remember that the hedge ratio = (Value of spot position) ÷ (Futures contract value).
- Hedging protects against adverse price movements.
- Basis risk arises because the futures price may not move perfectly with the spot price.
Many candidates assume a perfect hedge removes every risk. In reality, basis risk and margin requirements can still affect the outcome. Choose the answer that acknowledges residual risk.
Speculation with Futures
Speculators aim to profit from anticipated price movements without holding the underlying asset. Because futures require only a fraction of the contract value as margin, they provide high leverage, magnifying both gains and losses.
In the Indian context, a retail trader may go long on Nifty futures if they expect the index to rise, or short if they expect a fall. The trader’s exposure equals the contract size multiplied by the price change, not the margin posted.
For the NISM exam, you may need to calculate the effective leverage, determine the margin requirement, or decide which scenario (long or short) yields profit given a price change. Remember that speculative positions are closed before expiry to avoid physical delivery.
- Leverage = (Contract value) ÷ (Margin posted).
- Speculation is a zero‑sum game – one trader’s profit is another’s loss.
Do not confuse speculation (betting on price direction) with arbitrage (risk‑free profit from price differentials). The exam often pairs these concepts to test your understanding.
Arbitrage Opportunities in Futures
Arbitrage exploits price mismatches between the futures price and the theoretical fair price derived from the spot price, cost of carry, and interest rates. In India, the classic example is cash‑and‑carry arbitrage, where a trader buys the underlying stock, sells a futures contract, and earns the spread after accounting for financing costs.
Conversely, reverse cash‑and‑carry arbitrage occurs when the futures price is below the fair price. The trader shorts the stock, invests the proceeds, and buys a futures contract to lock in a profit.
Key exam points include identifying the conditions for each arbitrage type, calculating the fair futures price (F = S × e^{(r+u−d)T}), and recognising that arbitrage opportunities disappear quickly due to market efficiency.
- Arbitrage is risk‑free only if execution is simultaneous.
- SEBI monitors arbitrage activity to prevent market manipulation.
Comparison of Hedging, Speculation and Arbitrage using Futures
| Purpose | Risk Profile | Typical Participant | Key Metric |
|---|---|---|---|
| <strong>Hedging</strong> – offset existing exposure | Reduced but not eliminated; basis risk remains | Portfolio managers, exporters, distributors | Hedge ratio = Spot value ÷ Futures value |
| <strong>Speculation</strong> – profit from price direction | High – full exposure to price moves | Retail traders, proprietary desks | Leverage = Contract value ÷ Margin |
| <strong>Arbitrage</strong> – exploit price inefficiency | Near‑zero (theoretical) if executed instantly | Arbitrageurs, market makers | Fair futures price = S × e^{(r+u−d)T} |
Where:
F_T= Futures price at expiry (in rupees)F_0= Futures entry price (in rupees)Q= Contract size (number of shares or index multiplier)Worked Example
Given F_0 = 16,000, F_T = 16,500, Q = 75: Step 1: Profit = (16,500 - 16,000) × 75 Step 2: Profit = 500 × 75 Step 3: Profit = 37,500 rupees Verification: (16,500 - 16,000) × 75 = 37,500.
Mark‑to‑Market and Margin Mechanics
Every trading day, the exchange compares the futures settlement price with the previous day's price. The difference is settled in cash through the trader’s margin account – this is called mark‑to‑market (MTM). A positive MTM adds cash; a negative MTM deducts cash.
Initial margin is the upfront collateral required to open a position, while variation margin is the daily MTM amount. SEBI mandates minimum margin percentages (e.g., 10‑15% of contract value) and allows exchanges to adjust margins during high volatility.
For exam questions, you may need to compute the net cash flow after a series of MTM settlements or determine whether a margin call will be triggered when the account balance falls below the maintenance margin.
- MTM ensures that losses are realised daily, limiting credit risk.
- Failure to meet variation margin results in a margin call and possible position liquidation.
Profit/Loss of a Long Futures Position vs. Spot Price at Expiry
Scenario
An Indian distributor holds 10,000 shares of Reliance Industries, currently trading at Rs 2,500. He wants to hedge against a possible price fall over the next month using Nifty‑50 futures (contract size = 75 shares, futures price = Rs 2,520). The SEBI‑prescribed initial margin is 12% of the contract value.
Solution
Step 1: Determine the value of the spot position = 10,000 × 2,500 = Rs 25,000,000. Step 2: Futures contract value = 75 × 2,520 = Rs 189,000. Step 3: Required number of contracts = Spot value ÷ Futures contract value = 25,000,000 ÷ 189,000 ≈ 132.28, round to 132 contracts. Step 4: Initial margin per contract = 12% × 189,000 = Rs 22,680. Total margin required = 132 × 22,680 = Rs 2,994,560. Step 5: If the share price falls to Rs 2,400, the futures price will likely fall similarly. Assuming futures close at Rs 2,410, profit on futures = (2,410 - 2,520) × 75 × 132 = (‑110) × 75 × 132 = Rs ‑1,089,000. The loss on the spot position = (2,400 - 2,500) × 10,000 = Rs ‑1,000,000. Net loss = Rs ‑1,000,000 + Rs ‑1,089,000 = Rs ‑2,089,000, but the margin account absorbs the loss, limiting cash outflow to the margin posted.
Conclusion
The hedge reduces the impact of the price fall to the amount of margin required, illustrating how futures protect portfolio value while still exposing the investor to basis risk.
⭐Exam Takeaways
- Equity futures are standardized contracts with defined size, expiry and margin requirements under SEBI.
- Hedging locks in price risk; calculate hedge ratio = spot value ÷ futures contract value.
- Speculation uses leverage; profit/loss = (F_T – F_0) × Q for long positions.
- Arbitrage exploits price differentials; cash‑and‑carry profit = (F - S × e^{(r+u−d)T}) × Q.
- Mark‑to‑market settles daily gains/losses; failure to meet variation margin triggers a margin call.
- Common exam trap: assuming a hedge eliminates all risk – remember basis risk persists.
- Use the profit formula to quickly assess long or short futures outcomes in NISM questions.
Practice Questions
8 questions on Futures contracts for hedging, speculation and arbitrage
What is an equity futures contract?
Which formula is used to calculate profit or loss on a long futures position?
A portfolio manager holds shares worth Rs 25,000,000. Each futures contract is valued at Rs 189,000. What is the hedge ratio?
Using the data above, how much total initial margin is required if the SEBI‑prescribed margin is 12% of contract value and 132 contracts are needed?
A trader enters a long Nifty futures contract at Rs 16,000. At expiry the futures price is Rs 16,500 and the contract size is 75. What is the profit on the position?
In a cash‑and‑carry arbitrage opportunity, which set of actions correctly exploits a futures price that is above the theoretical fair price?
Which statement reflects a common exam trap related to hedging with futures?
A trader opens a short futures position, posting an initial margin of Rs 500,000. Over three days the mark‑to‑market cash flows are +Rs 20,000, –Rs 35,000 and +Rs 10,000. If the maintenance margin is 75% of the initial margin, will a margin call be triggered?