Option

Definition:
An Option is a type of financial derivative that gives the buyer the right—but not the obligation—to buy or sell an underlying asset at a specified price (strike price) before or on a certain date (expiration date). Options are commonly used for hedging, speculation, or generating income.

There are two basic types:

Call Option – The right to buy the asset
Put Option – The right to sell the asset

Key Terminology:

Term	Meaning
Underlying Asset	The stock, index, ETF, or commodity tied to the option contract
Strike Price	The fixed price at which the asset can be bought or sold
Expiration Date	The last date the option can be exercised
Premium	The price paid by the buyer to the seller (writer) for the option
Intrinsic Value	The amount by which an option is in the money
Time Value	The portion of the premium attributable to time remaining until expiry

Basic Types of Options:

Type	Buyer’s Right	When Used
Call	To buy the asset	When expecting asset price to rise
Put	To sell the asset	When expecting asset price to fall

Options Payoff Example:

Call Option Payoff:

If Stock Price > Strike Price at Expiry:
Profit = Stock Price - Strike Price - Premium
Else:
Loss = Premium paid

Put Option Payoff:

If Stock Price < Strike Price at Expiry:
Profit = Strike Price - Stock Price - Premium
Else:
Loss = Premium paid

Illustrative Example:

You buy a call option on Stock XYZ:

Strike Price: $100
Premium: $5
Expiration: 1 month

If XYZ trades at $120 on expiration:

Profit = (120 – 100 – 5) = $15

If XYZ stays below $100, you lose only the premium:

Loss = $5

Options Styles:

American Option: Can be exercised any time before expiration
European Option: Can be exercised only at expiration

Common Option Strategies:

Strategy	Purpose
Covered Call	Generate income
Protective Put	Hedge against downside
Long Straddle	Bet on volatility
Iron Condor	Benefit from low volatility
Bull Call Spread	Profitable if asset rises mildly

Risks and Considerations:

Time Decay: Option value decreases as expiration nears
Volatility Sensitivity: High implied volatility increases premiums
Leverage Effect: Can magnify both gains and losses
Complexity: Not suitable for all investors; options require understanding of pricing models and market dynamics

How Options Trade:

Traded on options exchanges (e.g., CBOE, NYSE, NASDAQ)
Tracked using option chains, which display available contracts by strike and expiry
Require brokerage accounts with options approval levels

Option Pricing (Black-Scholes Model – Simplified Overview):

Option Price = f (Stock Price, Strike Price, Time to Expiry, Volatility, Interest Rates)

Pricing models often include Greeks to measure sensitivities:

Delta (price movement)
Theta (time decay)
Vega (volatility sensitivity)
Gamma (rate of delta change)

Real-World Use Case:

An investor wants to profit from a potential increase in Tesla’s stock price but limit their downside. Instead of buying 100 shares at $800 (costing $80,000), they buy a call option with a $50 premium. The most they can lose is $50, while gains are potentially much higher if the stock rises above the strike price.