2.11 Options Basics
Options are derivative securities that give holders the right - but not the obligation - to buy or sell an underlying asset at a specified price before a certain date. While the SIE exam covers options at a basic level, understanding key concepts like calls, puts, premiums, and intrinsic value is essential.
What Is an Option?
An option is a contract that gives the buyer the right (not obligation) to buy or sell an underlying security at a predetermined price within a specific time frame.
Key Option Components
Underlying asset: The security the option is based on (usually stock)
Strike price: The price at which the option can be exercised
Expiration date: The date the option contract expires
Premium: The price paid to purchase the option
Calls vs. Puts
There are two types of options:
Call Options
A call option gives the buyer the right to buy the underlying security at the strike price.
- Buyer (holder): Has the right to buy
- Seller (writer): Has the obligation to sell if exercised
- Bullish: Buyers expect the price to rise
Memory Tip: "Call up" - You call to buy something and want prices to go up.
Put Options
A put option gives the buyer the right to sell the underlying security at the strike price.
- Buyer (holder): Has the right to sell
- Seller (writer): Has the obligation to buy if exercised
- Bearish: Buyers expect the price to fall
Memory Tip: "Put down" - You put (sell) something and want prices to go down.
Rights vs. Obligations
Buyer: Call Option - Right to buy; Put Option - Right to sell
Seller: Call Option - Obligation to sell; Put Option - Obligation to buy
Option Premium
The premium is the price paid by the buyer to the seller for the option contract.
Premium = Intrinsic Value + Time Value
Intrinsic Value
Intrinsic value is the amount by which an option is "in the money" - the built-in profit if exercised immediately.
For Call Options:
Intrinsic Value = Market Price minus Strike Price (if positive)
For Put Options:
Intrinsic Value = Strike Price minus Market Price (if positive)
Example: Stock trades at $55. A call with a $50 strike has intrinsic value of $5 ($55 - $50). A put with a $60 strike has intrinsic value of $5 ($60 - $55).
Time Value (Extrinsic Value)
Time value is the portion of the premium above intrinsic value. It reflects the possibility that the option could become more valuable before expiration.
- More time until expiration = More time value
- As expiration approaches, time value decays toward zero
- At expiration, an option has no time value - only intrinsic value (if any)
In, Out, and At the Money
Options are classified by the relationship between the strike price and market price:
Call Options
In the money (ITM): Market price greater than Strike price; Has value
At the money (ATM): Market price = Strike price; Zero
Out of the money (OTM): Market price less than Strike price; Zero
Put Options
In the money (ITM): Market price less than Strike price; Has value
At the money (ATM): Market price = Strike price; Zero
Out of the money (OTM): Market price greater than Strike price; Zero
Key Point: Only in-the-money options have intrinsic value. Out-of-the-money options have only time value.
Exercise Styles
American Style
American-style options can be exercised at any time before expiration.
- Most equity (stock) options are American-style
- More flexibility for the holder
- Generally more valuable than European-style
European Style
European-style options can only be exercised at expiration.
- Most index options are European-style
- Less flexibility for the holder
- Cannot be exercised early
Standard Contract Size
One equity option contract typically represents 100 shares of the underlying stock.
Example: If you buy 1 call option for a $2 premium, you pay $200 total ($2 x 100 shares). This gives you the right to buy 100 shares at the strike price.
Option Positions Summary
Buy call: Market View - Bullish; Maximum Gain - Unlimited; Maximum Loss - Premium paid
Sell call: Market View - Neutral/Bearish; Maximum Gain - Premium received; Maximum Loss - Unlimited
Buy put: Market View - Bearish; Maximum Gain - Strike price minus Premium; Maximum Loss - Premium paid
Sell put: Market View - Neutral/Bullish; Maximum Gain - Premium received; Maximum Loss - Strike price minus Premium
Key Takeaways
- Calls give the right to buy; puts give the right to sell
- Buyers have rights; sellers have obligations
- Premium = Intrinsic value + Time value
- In-the-money options have intrinsic value
- Time value decays as expiration approaches
- American options can be exercised anytime; European only at expiration
- One standard contract = 100 shares