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Options 101: The Contract & The Rights

What exactly is an option? We break down the four standardized terms that make up every contract and explain the fundamental difference between "Calls" and "Puts".

Feb 10, 20268 min read

The Elementary Definition

A stock option is, at its core, a contract. It grants the holder the right (but not the obligation) to buy or sell a particular stock at a certain price for a limited period of time.

This distinction is crucial: The buyer has a right; the seller has an obligation.

The stock involved is called the Underlying Security.

Key Concept: Options are "wasting assets". Unlike stock, they have a finite lifespan and will eventually expire.

The Two Types: Call vs. Put

There are only two types of option contracts:

1. Call Option: Gives the owner the right to BUY the underlying stock.

2. Put Option: Gives the owner the right to SELL the underlying stock.

Think of a Call as a "down payment" for a future purchase, and a Put as an "insurance policy" for a future sale.

Example: The Bullish Call

Suppose NVIDIA (NVDA) is trading at $130. You believe it will rise, so you buy a $140 Call for a premium of $5.

Scenario A (Price Rises to $160): You exercise your right to buy at $140. You can immediately sell those shares for $160. Your gross profit is $20 per share ($160 - $140). After deducting your $5 premium, your net profit is $15 per share ($1,500 per contract).

Scenario B (Price Stays at $120): You wouldn't buy at $140 when the market price is $120. The option expires worthless. Your maximum loss is the $5 ($500) you paid for the contract.

Example: The Bearish Put

Suppose Tesla (TSLA) is trading at $200. You fear it will crash, so you buy a $190 Put for $8.

Scenario A (Price Drops to $150): You exercise your right to sell at $190. Even though the market only pays $150, you get $190! Your gross profit is $40 per share. Net profit is $32 ($40 - $8 premium).

Scenario B (Price Rises to $220): You wouldn't sell at $190 when you can sell for $220. The option expires worthless. You lost your $8 ($800) insurance premium, but you "slept well" knowing you were protected.

The 4 Specifications

Every option contract is uniquely described by four specifications:

1. Type: Put or Call.

2. Underlying Stock: The company (e.g., TSLA, AAPL).

3. Expiration Date: The deadline. After this date, the contract is void.

4. Striking Price (or Exercise Price): The pre-agreed price at which the stock will be bought or sold.

Example

XYZ July 50 Call

Right to...

Buy XYZ Stock

Price

$50.00 per share

Deadline

July Expiration

Standardization

Options are standardized by exchanges (like the CBOE) to facilitate trading.

The Multiplier: One standard option contract normally represents 100 shares of the underlying stock.

Pricing: Option prices are quoted on a per-share basis. If an option trades at $5.00, buying one contract costs $500 ($5.00 x 100 shares).

Key takeaways

  • Call = Right to Buy. Put = Right to Sell.
  • One Contract = 100 Shares (usually).
  • Strike Price = The fixed price you trade the stock at.
  • You pay per share, so multiply the quote by 100 to get the actual cost.

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