Chapter 3: Futures Contracts, Mechanism and Pricing (Part 1)

1. Overview of Forward Contracts

Definition and Basic Mechanics

A forward contract is a bilateral agreement between two market participants to buy or sell an underlying asset on a specified future date at a price agreed upon today. In this transaction, the participant who agrees to purchase the underlying asset on the specified future date assumes a long position. Conversely, the participant who agrees to sell the asset on the same date at the agreed price assumes a short position.

Contractual terms such as delivery date, price, quantity, and quality specifications are bilaterally negotiated directly between the counter-parties. Forward contracts are executed outside formal stock exchanges in the Over-the-Counter (OTC) market.

Key Salient Features of Forward Contracts

• Bilateral Nature: Contracts are entered into directly between two private entities and carry direct counterparty credit risk.
• Customized Specifications: Every contract is unique regarding contract size, expiration schedule, asset quality, and delivery location.
• Private Pricing Information: Transaction prices are negotiated privately and are not published in the public domain.
• Physical Settlement at Expiry: Settlement on the expiration date is conventionally completed by actual physical delivery of the underlying asset.
• Reversal Friction: Reversing or closing out an existing position requires negotiating with the original counterparty, which often leads to illiquidity or disadvantageous pricing.

2. Structural Limitations of Forward Markets

Forward markets worldwide face structural inefficiencies that impede seamless trading and market participation.

Core Vulnerabilities

1. Lack of Centralized Trading: Trading takes place in a fragmented OTC setup rather than a single, organized exchange floor or automated system.
2. Illiquidity: Excessive flexibility and custom design mean contract terms suit only the specific needs of the two contracting parties, rendering the contracts non-tradable in secondary markets.
3. Counterparty Risk: This risk represents the possibility of default by either party to the transaction. If one counterparty declares bankruptcy or fails to perform, the non-defaulting party absorbs financial losses. Even when standardized terms are used in forward arrangements, counterparty default risk persists as long as there is no central clearing mechanism.

3. Introduction to Futures Contracts

Definition and Exchange Standardization

A futures contract is a standardized, exchange-traded agreement between two parties to buy or sell an underlying asset at a predetermined price on a specified future date. Unlike forward contracts, futures trade on organized exchanges that establish uniform contract specifications to ensure high market liquidity.

Futures Standardization Framework: [Exchange Standardizes Terms] ---> [Central Clearing & Novation] ---> [Elimination of Counterparty Risk]

Standardized Items in a Futures Contract

To maintain market uniformity and facilitate secondary trading, stock exchanges standardize the following elements:

• Quantity of Underlying: Specified contract size or lot size for each contract.
• Quality of Underlying: Deliverable asset grade, specifications, or reference benchmark index.
• Delivery/Expiry Schedule: Standard expiration dates and trading months.
• Quotation Units & Tick Size: Currency quotation units and minimum allowable price movement (tick size).
• Settlement Location: Designated location or mechanism for final contract settlement.

Counterparty Guarantee and Offset Mechanism

In futures markets, the stock exchange (or its clearing corporation) acts as a legal counterparty to every trade, guaranteeing performance and largely eliminating counterparty credit risk. A futures position can be closed prior to maturity by executing an equal and opposite transaction in the market.

4. Distinction Between Futures and Forward Contracts

The following table summarizes the key operational and structural differences between futures and forward contracts:

5. Essential Futures Market Terminology

Price and Contract Specifications

• Spot Price: The prevailing market price at which an underlying asset trades in the cash (spot) market.
• Futures Price: The agreed-upon price locked in today for buying or selling an asset at a specified future date.
• Contract Cycle: The period during which a futures contract actively trades. On the National Stock Exchange of India (NSE), equity futures operate on 1-month, 2-month, and 3-month expiry cycles that cease trading on the last Thursday of the expiration month. A new 3-month contract is introduced on the Friday following the last Thursday.
• Expiry Date: The final date on which trading ends and final settlement of the contract takes place.
• Contract Size (Lot Size): The fixed deliverable or contract quantity of the underlying asset governed by a single futures contract.

Basis Formula (Simple Line Format): Basis = Futures Price - Spot Price

• Basis: Defined as the futures price minus the spot price. In normal market conditions, the basis is positive because futures prices typically exceed spot prices due to financing costs.
• Cost of Carry: The total expense of holding an asset, calculated as storage costs plus interest paid to finance the purchase minus income earned (such as dividends) from the asset.

Cost of Carry Formula (Simple Line Format): Cost of Carry = Financing Interest + Storage Costs - Asset Income

Margining and Risk Management Terms

• Initial Margin: The upfront cash or collateral deposit required in the margin account when opening a futures position.
• Marking-to-Market (MTM): The daily settlement process where the margin account is adjusted at the end of each trading day to reflect gains or losses based on the futures daily closing settlement price.
• Maintenance Margin: The minimum equity balance that an investor must maintain in their margin account. If the balance drops below this threshold, a margin call is issued requiring the investor to top up the account back to the initial margin level before trading resumes the next day.

6. Trading Underlying Securities vs. Trading Single Stock Futures

Trading equity shares in the spot market differs fundamentally from trading Single Stock Futures (SSF) in terms of leverage, administrative setup, and shareholder rights.

7. Futures Payoff Mechanics

Linear and Symmetrical Payoffs

Futures contracts exhibit linear (symmetrical) payoff profiles. This structure implies that potential profits and losses scale proportionally with underlying price movements, creating unlimited upside potential alongside unlimited downside risk for both buyers and sellers.

Payoff Structure Comparison: Futures Payoffs: Linear / Symmetrical ---> Unlimited Profit & Unlimited Loss Option Payoffs: Non-Linear / Asymmetrical ---> Limited Loss & Unlimited Profit (for buyer)

Payoff Profile for Buyer of Futures (Long Futures)

A buyer of a futures contract profits when the underlying asset price rises above the entry futures price and incurs a loss when the price falls below it.

Long Futures Payoff Formulas (Simple Line Format): Payoff (Buyer Profit/Loss) = Spot Price at Expiry - Initial Futures Purchase Price Break-Even Point = Initial Futures Purchase Price

Numerical Example (Long Nifty Futures)

An investor buys a 2-month Nifty Index Futures contract at a price of 2220.

• Scenario A (Bullish Outcome): If Nifty rises to 2280 at expiry, the buyer earns a profit of 2280 - 2220 = +60 points per unit.
• Scenario B (Bearish Outcome): If Nifty falls to 2160 at expiry, the buyer incurs a loss of 2160 - 2220 = -60 points per unit.

Payoff Profile for Seller of Futures (Short Futures)

A seller of a futures contract profits when the underlying asset price drops below the initial short futures price and incurs a loss when the price increases above it.

Short Futures Payoff Formulas (Simple Line Format): Payoff (Seller Profit/Loss) = Initial Futures Sale Price - Spot Price at Expiry Break-Even Point = Initial Futures Sale Price

Numerical Example (Short Nifty Futures)

An investor sells a 2-month Nifty Index Futures contract at a price of 2220.

• Scenario A (Bearish Outcome): If Nifty falls to 2160 at expiry, the seller earns a profit of 2220 - 2160 = +60 points per unit.
• Scenario B (Bullish Outcome): If Nifty rises to 2280 at expiry, the seller incurs a loss of 2220 - 2280 = -60 points per unit.

Key Takeaways and Important Terms

Core Conceptual Summary

1. Forwards vs. Futures: Forward contracts are customized, illiquid OTC agreements with significant counterparty risk. Futures are exchange-traded, standardized, liquid contracts guaranteed against counterparty default by a central clearing entity.
2. Contract Standardization: Exchanges mandate standardized terms for lot size, delivery dates, tick size, and settlement location to maintain market integrity and liquidity.
3. Risk Management: Futures risk is managed through initial margins, maintenance margins, daily mark-to-market adjustments, and central counterparty guarantees.
4. Leverage Efficiency: Trading single stock futures allows investors to gain price exposure to underlying shares by depositing margin money without paying the full cash value or requiring a demat account.
5. Payoff Symmetry: Both long and short futures positions feature symmetrical, linear payoffs, producing equal potential for profits and losses depending on price direction.

Glossary of Essential Terms

• Long Position: A position established by buying a derivative contract or security to profit from rising prices.
• Short Position: A position established by selling a derivative contract or security to profit from falling prices.
• Basis: The numerical difference between the futures price and the spot price of an asset (Basis = Futures Price - Spot Price).
• Cost of Carry: The net financial cost associated with holding an asset until maturity, incorporating interest and storage costs minus dividend income.
• Mark-to-Market (MTM): Daily revaluation of open positions based on prevailing closing settlement prices, resulting in daily cash credits or debits.
• Margin Call: A demand by a broker for an investor to deposit additional funds to restore the margin account to the initial margin level.
• Tick Size: The minimum allowable price movement increment specified by the exchange for a futures contract.