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Understanding Options Contracts and How They Work

What Are Options? A Beginner's Guide to Trading

Understand the fundamentals of options trading, including what options contracts are, how they derive value from stocks, and why millions of traders use them.

14 min read Updated
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On this page
  1. What Is an Option?
  2. The Two Types: Calls and Puts
  3. Key Options Terms
  4. Why Trade Options?
  5. Buying vs Selling Options
  6. Key Takeaways
Updated 14 min read By Ryan Silk & Lawrence Polatchek Fact-checked

Option

is a contract that gives you the right, but not the obligation, to buy or sell a stock at a specific price before a certain date.

Options are derivatives—they derive their value from an underlying asset (usually a stock). Each contract typically represents 100 shares.

Quick answer

An option = the RIGHT to buy or sell 100 shares at a set price. Call = right to buy. Put = right to sell. You pay a premium for this right. Options expire worthless if not used, but your max loss is limited to the premium paid when buying options.

An option is a contract giving the right, but not the obligation, to buy (call) or sell (put) 100 shares at a set strike price before expiration.

What Is an Option?

An option is a contract that gives you the right—but not the obligation—to buy or sell a stock at a predetermined price (strike price) before a specific date (expiration).

Think of it like a reservation. If you pay a small fee to reserve the right to buy a house at $500,000 for the next 3 months, you can walk away if prices drop (losing only the reservation fee) or exercise your right if prices rise.

Each options contract represents 100 shares of stock. So a $2.00 option costs $200 total ($2 × 100 shares).

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The Two Types: Calls and Puts

Call Options

A call gives you the right to BUY stock at the strike price. You buy calls when you're bullish (expect the stock to rise).

Example: Buy a $100 call on Apple for $3. If Apple rises to $115, you can buy at $100 and immediately sell at $115. Profit: $15 - $3 premium = $12 per share ($1,200 per contract).

Put Options

A put gives you the right to SELL stock at the strike price. You buy puts when you're bearish (expect the stock to fall) or want protection.

Example: Buy a $100 put for $3. If the stock drops to $85, you can sell at $100 even though it's worth $85. Profit: $15 - $3 = $12 per share.

Key Options Terms

  • Strike Price: The price at which you can buy (call) or sell (put) the stock
  • Expiration Date: When the option contract ends
  • Premium: The price you pay for the option
  • Underlying: The stock the option is based on
  • Contract: One option = 100 shares

Why Trade Options?

1. Leverage

Control 100 shares for a fraction of the cost. A $200 option can give you exposure to $15,000+ worth of stock.

2. Limited Risk

When buying options, your maximum loss is the premium paid. You can't lose more than your initial investment.

3. Flexibility

Make money when stocks go up, down, or sideways. Hedge existing positions. Generate income from stocks you own.

Buying vs Selling Options

Buying options: Pay premium, limited risk, unlimited profit potential. Need stock to move in your direction.

Selling options: Receive premium, unlimited risk (unless covered), limited profit. Profit from time decay and stock staying still.

Key Takeaways

  • Options give you the right, not obligation, to buy or sell stock
  • Calls = bullish (right to buy), Puts = bearish (right to sell)
  • Each contract = 100 shares
  • Buying options: limited risk to premium paid
  • Options provide leverage, flexibility, and hedging ability

Watch

What Are Options? Calls, Puts, Moneyness and IV Calls, puts, strike, premium and expiration, moneyness, implied volatility and IV crush, and the three jobs options do, in about two minutes. Transcript and key takeaways Subscribe on YouTube

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Written by
ApexVol Research Team
Quantitative options research. All calculations use live institutional-grade data — the same source professional volatility desks use.
Reviewed by
Ryan Silk, ApexVol Founder
Reviewed for technical accuracy. 10+ years trading options; built ApexVol's pricing engine, Greeks model and IV-rank methodology.

Revised as market conditions and institutional data change. Last revised 2025-01-21. How we research →

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