Understanding Options Contracts
An option is a derivative whose value depends on an underlying asset—typically stocks, commodities, or indices. Unlike owning the asset outright, an option grants conditional rights without forcing execution.
There are two primary option types:
- Call options give the buyer the right to purchase the underlying asset at the strike price.
- Put options give the buyer the right to sell the underlying asset at the strike price.
Each option contract represents rights over 100 units of the underlying asset. When you purchase one call or put contract, you control 100 shares of stock. This multiplier is crucial for calculating total premiums and profits, especially when trading multiple contracts.
Options traders use these instruments to profit from directional price movements, volatility shifts, or to protect existing positions against downside risk.
Option Profit and Loss Calculations
Call profit depends on how much the underlying asset price exceeds the strike price, minus the premium paid. Put profit depends on how much the strike price exceeds the asset price, again minus the premium paid. Here are the core formulas:
Call profit = (Current price − Strike price − Call premium per contract) × Contracts × 100
Call return (%) = Call profit ÷ (Call premium per contract × Contracts × 100) × 100
Put profit = (Strike price − Current price − Put premium per contract) × Contracts × 100
Put return (%) = Put profit ÷ (Put premium per contract × Contracts × 100) × 100
Call breakeven = Strike price + Call premium per contract
Put breakeven = Strike price − Put premium per contract
Current price— The market price of the underlying asset at evaluation time.Strike price— The predetermined price at which you can exercise the option.Call premium per contract— The price you paid per call contract (divided by 100 for per-share cost).Put premium per contract— The price you paid per put contract (divided by 100 for per-share cost).Contracts— The number of option contracts owned. Each contract controls 100 shares.
Moneyness: In-the-Money, At-the-Money, and Out-of-the-Money
Options traders use three terms to describe an option's relationship to the underlying asset price:
- In-the-money (ITM): The option has intrinsic value. For calls, the current price exceeds the strike price. For puts, the strike price exceeds the current price. An ITM option can be exercised profitably, though the premium paid must be factored in.
- At-the-money (ATM): The current price equals the strike price. The option has no intrinsic value, only time value from the remaining days until expiration.
- Out-of-the-money (OTM): The option has no intrinsic value. For calls, the current price is below the strike price. For puts, the strike price is below the current price. If OTM at expiration, the option expires worthless and the entire premium is lost.
Breakeven price is where profit transitions from loss to gain. For a call, it's the strike price plus the premium paid. For a put, it's the strike price minus the premium paid.
Common Pitfalls and Risk Considerations
Avoid these frequent mistakes when trading options.
- Ignoring the contract multiplier — Many new traders forget that one contract represents 100 shares. A $2.00 premium per contract costs $200 in real money. Failing to account for this when calculating total capital outlay or position sizing can lead to overleverage or miscalculated returns.
- Holding through expiration without a plan — Options lose their entire premium if they expire out-of-the-money. Even if an option is profitable with time remaining, holding to the last day increases the risk that a sudden adverse price move erases gains. Consider closing winning positions early or setting profit targets in advance.
- Underestimating implied volatility crush — When you buy an option, you pay for implied volatility. After earnings announcements or major news, volatility often falls sharply, depressing option prices even if your directional view was correct. This 'IV crush' can wipe out profits on profitable positions.
- Neglecting breakeven analysis — Buying a call or put is only the beginning. Always calculate your breakeven price and compare it to your conviction level about where the asset will trade. If the asset must move 20% just to break even, ensure the probability and reward justify the risk.
Call vs. Put Strategies: Real-World Application
Long call strategy: Deploy this when you expect the underlying asset to rise substantially. You profit from any price increase above your breakeven. Entry points are strongest when the asset breaks above its 50-day or 200-day moving average, signalling sustained upward momentum. Rising earnings growth, strong free cash flow, and improving margins support bullish options positions. Choose strike prices closer to current price for higher probability trades, or further out-of-the-money for lower cost and higher leverage.
Long put strategy: Use puts when you anticipate downward pressure on the asset price. Puts profit if the price falls below your breakeven. Warning signs include deteriorating earnings forecasts, elevated valuations, falling relative strength index (RSI) readings, or assets trading below their moving averages. A high beta stock amplifies downside moves, making put purchases more effective. Far out-of-the-money puts offer lottery-like returns with defined risk, while near-the-money puts provide higher probability but larger premium cost.
In both cases, time decay works against you. The closer to expiration, the faster premium erodes. Plan exit strategies before entering, whether via profit targets, stop losses, or calendar-based exits before expiration.