Calendar Spreads Explained
Options Basics
The Right, Not the Obligation
Options are a type of financial contract. But instead of being a firm commitment to buy or sell something, an option gives you the choice to do so. Think of it like putting a deposit on a house. You pay a small fee to lock in a price for a certain period. If you decide to buy the house, you exercise your right. If you change your mind, you just lose the deposit, not the full price of the house.
Think of options as an agreement, a contract giving you the right, but not the obligation, to buy or sell an underlying asset – typically shares listed on the NSE or BSE – at a predetermined price (called the strike price) on or before a specific date (the expiration date).
This contract gives the holder the right, but not the obligation, to buy or sell an underlying asset (like a stock) at a specific price, on or before a certain date. The key words are "right, not the obligation." You have the choice, but you're not forced to act.
Two Flavors: Calls and Puts
Options come in two basic types: calls and puts. They're opposites, designed for different market outlooks.
A call option gives you the right to buy an asset at a set price. You'd buy a call if you believe the price of the underlying asset is going to rise. If you're bullish on a stock, you might buy a call option on it.
A put option gives you the right to sell an asset at a set price. You'd buy a put if you believe the price is going to fall. If you're bearish on a stock, a put option could be your tool.
| Option Type | Your Right | Best When You're... |
|---|---|---|
| Call Option | To Buy | Bullish (expecting prices to rise) |
| Put Option | To Sell | Bearish (expecting prices to fall) |
Anatomy of an Option
Every options contract has a few key components that define its terms. Understanding these parts is crucial to understanding the option itself.
Strike Price
noun
The predetermined price at which the underlying asset can be bought or sold.
The strike price is the locked-in price in your contract. If you have a call option with a $100 strike price, you have the right to buy the stock at $100, no matter how high the market price goes. If you have a put option with a $100 strike price, you can sell the stock at $100, even if its market price drops to $80.
Expiration Date
noun
The date on which an options contract becomes void.
Options don't last forever. The expiration date is the last day you can exercise your right to buy or sell. After this date, the contract is worthless. This introduces the element of time into trading. The closer an option gets to its expiration, the less time there is for the market to move in your favor.
Premium
noun
The price of an options contract, paid by the buyer to the seller.
The premium is what you pay to buy an options contract. It's the cost of having that choice to buy or sell. The seller of the option receives this premium as payment for taking on the risk. The premium is quoted on a per-share basis, and since a standard options contract represents 100 shares, you multiply the premium by 100 to get the total cost. For example, a premium of $1.50 means the contract will cost you $150.
The premium is the non-refundable price you pay for the choice an option gives you.
These three elements—strike price, expiration date, and premium—form the core of every option. They define what you can do, for how long, and at what cost.
What is the fundamental characteristic of an options contract?
If you are "bullish" on a stock, meaning you believe its price will rise, which type of option would you typically buy?
With these basics, you have the building blocks to understand how options work.