Futures trading involves standardized exchange-traded contracts whose value is linked to an underlying asset such as a stock, market index, commodity, currency, or interest-rate instrument. A futures contract specifies important details including the underlying asset, contract size, expiry date, price, margin requirements, and settlement method. These standardized features allow market participants to manage price exposure through an organized marketplace.
In India, futures contracts are available across several market segments, including equity derivatives, commodities, currencies, and interest-rate products. The Securities and Exchange Board of India (SEBI) establishes the regulatory framework, while exchanges such as the National Stock Exchange (NSE) publish contract specifications and trading parameters.
A futures position creates an obligation linked to the contract. Unlike a regular investment in an underlying security, a futures position is maintained through margin requirements and is adjusted through daily settlement processes. Understanding these mechanics is important because the notional value of a futures contract can be substantially larger than the amount initially deposited as margin.
How a futures contract works
Each contract has defined specifications. These may include the underlying instrument, lot or contract size, minimum price movement, expiry date, trading cycle, and settlement method.
For example, NSE equity futures have defined trading cycles, with contracts available across different maturity months. Individual-security futures generally have a three-month trading cycle consisting of near-month, next-month, and far-month contracts.
A simple example illustrates the relationship between price and contract size. If a futures contract represents 100 units and the futures price is ₹500 per unit, the notional value is ₹50,000. The required margin is only a portion of that value, although the exact amount depends on the contract and the exchange's risk calculations.
Importance
Futures trading matters because it provides a structured way to manage exposure to changes in underlying asset prices. Market participants can use futures for hedging, portfolio management, price exposure, and other financial strategies. The same structure can also create substantial gains or losses relative to the margin deposited.
Why contract size matters
Contract size determines how much of the underlying asset one futures contract represents. A larger contract size means that each price movement can have a larger effect on the position's monetary value.
SEBI has adjusted the framework for equity index derivatives in recent years, including changes to minimum contract values. These changes are intended to align contract sizes with the risk characteristics of the derivatives market.
Why expiration dates matter
Every futures contract has an expiration date. As the expiry approaches, the holder of an open position needs to understand the applicable settlement procedure and exchange rules.
The expiration date can affect trading activity, liquidity, margin requirements, and the transition between contract months. Different market segments can have different expiry schedules, so traders need to refer to the relevant exchange specification rather than assume that every futures contract expires on the same day.
Why margins matter
Margin is a risk-control mechanism rather than a partial payment for the underlying asset. NSE Clearing uses the SPAN system to calculate initial margin requirements for equity derivatives, with calculations based on potential portfolio risk.
Margin requirements can change as market conditions change. Additional margin requirements may also apply under particular circumstances. This means that an account with an open futures position may require additional funds when market risk increases.
Why positions matter
A position represents an open exposure in a futures contract. Positions can be categorized by direction and maturity, while the total number of contracts held is relevant to position limits and risk calculations.
Exchanges and regulators establish position limits to help manage concentration and market risk. The rules can differ according to the underlying instrument and market segment.
Recent Updates
India's derivatives framework has undergone several changes during 2024–2026. SEBI introduced measures affecting index derivatives, including changes involving weekly expiries, contract sizes, expiry-day risk controls, and margin-related requirements.
One important development was the rationalization of weekly index derivatives. From late 2024, weekly index derivative availability was restricted to one benchmark index per exchange. The framework also included changes to expiry-day risk coverage.
Contract sizes were also increased under the revised framework. SEBI's measures moved the minimum contract value toward a higher range, changing the amount of market exposure represented by qualifying index derivative contracts.
SEBI also changed the expiry-day framework. Its 2025 circular established a framework under which equity derivative expiries across an exchange are limited to specified days, while exchanges retain a designated weekly benchmark index options contract.
For futures specifically, current exchange specifications should be checked before considering a contract because expiry schedules and other specifications can vary between products. NSE's current equity-derivatives information, for example, lists Tuesday as the expiry day for its specified equity futures contracts.
Laws or Policies
In India, futures trading falls under the regulatory framework administered by SEBI, with clearing and exchange-level mechanisms supporting market integrity and risk management. Exchanges publish detailed contract specifications covering expiry, trading cycles, margins, settlement, position limits, and other parameters.
Margin regulations
NSE Clearing uses online margining and SPAN-based calculations for equity derivatives. Initial margins are collected upfront, and the framework is designed around potential losses under different market scenarios.
Margins are not necessarily fixed for the entire life of a contract. Volatility, market conditions, contract characteristics, and regulatory requirements can affect the amount required.
Settlement rules
Settlement rules depend on the particular futures product. Equity derivatives have defined daily and final settlement procedures, while currency, commodity, and interest-rate futures can use different methodologies.
For example, NSE currency derivatives use daily settlement and final settlement procedures, with cash settlement in Indian rupees for the specified contracts. The exchange also defines daily and final settlement prices according to the relevant underlying reference methodology.
Commodity futures can have additional requirements around the expiry and delivery period. NSE commodity rules include pre-expiry, delivery-period, and other risk-related margins for applicable contracts.
Position limits
Position limits restrict the quantity of exposure that an individual participant or other market participant can maintain in particular derivatives. The applicable limit depends on the contract and regulatory framework.
These limits are part of the broader risk-management structure. They can help address excessive concentration and maintain orderly functioning of derivatives markets.
Tools and Resources
Several resources can help readers understand futures trading details and verify current contract information.
- NSE contract specifications provide information about contract size, expiry, trading cycles, price steps, and other parameters for listed derivatives.
- NSE margin information explains how initial margins and SPAN-based calculations are applied to equity derivatives.
- SEBI circulars and regulatory documents provide information about changes to the derivatives framework and expiry rules.
- Exchange margin calculators can help estimate the margin requirement associated with particular futures positions.
- Position-size calculators can help translate a price movement into the corresponding monetary change for a specified contract size.
- Trading platforms generally provide contract specifications, expiry information, open positions, margin information, and daily settlement figures.
The exact figures displayed by an exchange or trading platform can change with market conditions and regulatory requirements. Current contract documentation should therefore be used when checking a particular futures contract.
Basic futures data table
| Futures element | What it means | Why it matters |
|---|---|---|
| Contract size | Quantity represented by one contract | Determines exposure from each price movement |
| Futures price | Current quoted price of the contract | Used to determine the position's notional value |
| Expiry date | Date on which the contract reaches maturity | Determines the applicable final settlement process |
| Initial margin | Amount required to establish the position | Supports the clearing and risk-management framework |
| Daily settlement | Periodic adjustment based on settlement prices | Records gains and losses during the contract period |
| Position | Open exposure in a futures contract | Determines market exposure and applicable limits |
| Settlement method | Procedure used to close financial obligations | May differ between equity, currency, commodity, and other futures |
FAQs
What is futures trading?
Futures trading involves standardized exchange-traded contracts linked to an underlying asset. Each contract has defined specifications such as contract size, expiry date, margin requirements, and settlement procedures.
How are futures contract sizes determined?
Futures contract sizes are established by the relevant exchange within the applicable regulatory framework. Contract size determines the quantity represented by one contract and therefore influences the monetary effect of price movements.
How do futures expiration dates work?
A futures contract has a specified expiration date. The applicable expiry schedule depends on the underlying and exchange, so the relevant contract specification should be checked before the position approaches maturity.
What are margins in futures trading?
Margins are amounts required to support futures positions within the exchange and clearing framework. Initial margin is calculated using risk-based methodologies, and additional requirements can apply when market conditions or regulatory rules require them.
How are futures positions settled?
Futures positions can be subject to daily mark-to-market settlement and a final settlement process at expiry. The exact procedure depends on the product. Equity, currency, commodity, and interest-rate futures can have different settlement methodologies.
Conclusion
Futures trading is built around standardized contracts that define contract size, expiry dates, margins, positions, and settlement procedures. These elements determine how much market exposure a contract represents and how financial obligations are handled during its life. In India, SEBI and exchanges such as NSE have introduced and updated rules covering contract specifications, expiry structures, margins, and risk controls. Understanding the applicable contract documentation is therefore an important part of interpreting any particular futures product.