Call and Put Options: A Guide to Choosing the Right Trading Strategy

When starting options trading, investors often face a crucial decision: should they buy a put option or a call option? These two instruments offer different opportunities but also carry distinct risks. To choose the right strategy, it’s essential to understand their fundamental nature, profit structures, and cost systems.

Differentiating Between the Two Types of Options: Calls and Puts

An option is a derivative contract that grants the buyer the right (but not the obligation) to buy or sell an underlying asset at a predetermined price within a specified period.

Call Option: Grants the buyer the right to purchase the underlying asset at a set price (called the strike price). This strategy benefits when the asset’s price rises sharply.

Put Option: Grants the buyer the right to sell the underlying asset at a set price. This is a risk-hedging strategy when investors forecast a decline in the price.

To acquire either of these options, the buyer must pay an option premium to the seller. Conversely, the seller receives this premium but is obligated to buy or sell the asset if the buyer exercises the option.

Profit and Obligation Structures Between Buyers and Sellers

The fundamental difference lies in the nature of the transaction:

Option Buyer:

• Holds the right (not obligation)
• Maximum loss limited to the premium paid
• Maximum profit is unlimited (for calls) or defined (for puts)
• No additional margin required to maintain the position

Option Seller:

• Bears the obligation to fulfill the contract if requested by the buyer
• Maximum profit is the premium received
• Potential loss is unlimited (for calls) or defined (for puts)
• Must maintain a certain margin to ensure the ability to fulfill obligations

Profit and Loss Analysis: Who Has the Advantage?

The comparison table below clearly illustrates the profit and loss scenarios for each participant:

From this analysis, it’s evident that when you buy a put option, your maximum loss is limited to the premium paid, while your profit potential is capped but significant. Conversely, when selling a put option, you may face substantial losses if the asset’s price drops sharply.

The main advantage of buying options generally is the tight risk control while maintaining the potential for various profit outcomes depending on the option type.

Trading Costs and Their Impact on P&L

When trading options on Bybit, your actual P&L is affected by several fees:

Trading Fee Table:

These fees are calculated based on the option contract value but do not exceed 12.5% of the option’s price. Additionally, Bybit charges a 0.2% liquidation fee if your position is forcibly closed.

When calculating final P&L, remember: P&L = Realized Profit - Total Fees (for buyers) or P&L = Premium Received - Fees - Actual Loss (for sellers).

This means that when you buy a put option, trading fees directly reduce your profit, especially if the gains from the option are small.

Margin Requirements: Different Burdens for Buyers and Sellers

An important factor affecting trading capacity is the maintenance margin requirement:

For Long Call/Put Positions (Buyers):

• No additional margin required
• Only pay the premium upfront; no further margin needed until expiration or closing

For Short Call/Put Positions (Sellers):

• Must maintain a margin of 10% to 15% of the underlying asset’s value of the option
• This is based on the standard margin regime

This difference is crucial when planning your trades. If your capital is limited, buying options (especially buying puts for hedging) is more cost-effective because it doesn’t require maintaining margin.

Furthermore, Bybit offers a Portfolio Margin mode, which calculates margin based on your entire position portfolio, potentially reducing margin costs compared to the standard mode.

Choosing the Right Strategy Based on Trading Goals

Deciding between buying a call or buying a put depends on:

• Market forecast: Buy a call if expecting prices to rise; buy a put if expecting decline
• Financial capacity: Buyers have limited risk and no need for additional margin
• Investment objectives: Buying options is suitable for hedging; selling options is more advanced, aiming to generate income from premiums

In summary, when choosing between buying a put and other options, carefully consider the risk structure, costs, and your trading goals to make the most informed decision.