Main Contract

What is the Main Contract?

The main contract in the futures market refers to the contract with the highest trading volume and best liquidity during a specific period. Typically, main contracts usually emerge in the contracts for January, May, and September. Each type of futures usually has multiple contracts, with different expiration dates, but the main contract is generally the most active one and attracts the most interest from participants.

The main contract is determined by the futures exchange or relevant institutions based on certain rules and standards, which may include indicators such as trading volume, open interest, and trading activity. The price of the main contract is often used as the benchmark price for that type of futures, reflecting the overall market view and expectations for the product.

Characteristics of Main Contracts

The characteristics of main contracts may vary across different futures markets and products, but generally, main contracts have the following features:

1. High Liquidity: Main contracts have high liquidity, meaning traders can enter and exit the market more easily, with more reasonable transaction prices and sufficient trading counterparts.
2. Lower Bid-Ask Spread: High liquidity of main contracts reduces the bid-ask spread (the difference between the buying and selling price), enabling investors to trade at lower costs.
3. Better Market Transparency: Main contracts enhance market transparency, allowing investors to understand market trends, trading volumes, and open interest more accurately.
4. Benchmark Pricing: The price of the main contract reflects the overall market view and expectations for the product, often serving as the standard reference price for that futures type.
5. Enhanced Risk Management: The high liquidity and stable price of main contracts make them the preferred choice for market participants to hedge risks, conduct arbitrage, or establish positions.
6. High Trading Activity: The high trading activity of main contracts makes it easier for investors to find trading counterparts and quickly execute trade orders.

Advantages of Main Contracts

As the preferred and more liquid contracts during trading, main contracts have the following advantages in the futures market:

1. High Liquidity: Main contracts are usually the most widely traded ones in the market, offering high liquidity, which means traders can enter and exit the market more easily and find counterparts for their trades more efficiently.
2. Better Price Discovery: The trading activities and volumes of main contracts reflect the overall market trend and demand, providing traders with more accurate price discovery.
3. Broader Market Participation: Main contracts attract participation from investors of different backgrounds and scales, offering more trading opportunities and interaction among market participants, providing investors with more choices and opportunities.
4. Lower Transaction Costs: Due to the high liquidity and broader market participation of main contracts, transaction costs are relatively lower. Traders can trade with lower bid-ask spreads, reducing transaction costs and slippage effects.
5. Risk Management Tool: As the most active and widely traded contract in the market, institutions and investors can use main contracts to hedge risks in other derivative contracts or spot markets, balancing and managing their investment portfolios' risks.

Rules for Contract Rollovers of Main Contracts

The rules for contract rollovers of main contracts refer to the specified actions required by the exchange when a futures contract approaches its expiration date. Here are some common rollover rules in the futures market:

1. Expiration Date Rule: The exchange specifies the expiration date for each futures contract. As the expiration date approaches, the exchange will issue notifications reminding traders to take action. The expiration date usually falls on a specific date in a month, such as the third Friday of each month.
2. Rollover Period: There is typically a period called the "rollover period" before the expiration date. During this time, investors can choose to close their positions or transfer them to the next contract. The specific length of the rollover period varies by exchange and contract, ranging from a few days to a week.
3. Rollover Mechanism: Investors can close their positions or perform contract conversions during the rollover period. Closing a position means selling the held contract to offset the position. Contract conversion means transferring the position from the current contract to the next one, usually achieved through hedging transactions.
4. Rolling Trading: Rolling trading refers to the gradual transfer of positions from the current contract to the next one during the rollover period. By gradually closing old positions and establishing new ones, investors can avoid significant market volatility risks on the rollover day.

Differences Between Main and Non-Main Contracts

Main contracts and non-main contracts in the futures market differ in the following ways:

1. Liquidity: Main contracts usually have higher trading volumes and broader market participation, resulting in higher liquidity. In contrast, non-main contracts have lower liquidity, smaller trading volumes, and fewer market participants.
2. Trading Activity: Due to higher liquidity, main contracts have higher trading activity. Main contracts have more frequent quotes and transactions, greater market depth, and easier trading. Non-main contracts have less trading activity.
3. Price Discovery: Higher trading activity in main contracts involves more market participants, reflecting the overall market trend and demand and serving as a market price reference. Non-main contracts have a lesser impact on overall market prices.
4. Order Depth: Main contracts typically have deeper order books, with more substantial buy and sell orders, providing more liquidity and better trading opportunities. Non-main contracts have shallower order books.
5. Expiration Date: Main contracts, being the most active and liquid, usually have longer expiration dates. Non-main contracts usually have shorter expiration dates, often nearing the main contract's expiration date.