How Options Contracts Work — The 5 Parts of Every Contract

Open your brokerage app. Pull up any stock. Tap on "Options." And suddenly you are staring at a screen that looks like it was designed by someone who genuinely does not want you to understand it.

Rows of numbers. Columns labeled with words you have never seen before. Dates, strikes, bids, asks, Greeks. It feels like walking into the cockpit of a plane when all you wanted was a window seat.

Here is the good news. Every single options contract on every exchange in the world is built from the same five pieces. Learn those five pieces and that cockpit starts to make sense. Fast.

The Five Pieces of Every Contract

Pull up Apple options on your brokerage platform and you will see something like this:

AAPL Jan 20 $100 Call at $3.00

That one line contains everything. Let me break it apart.

AAPL is the underlying stock. This is the stock the option is connected to. In this case, Apple. The option's price moves based on what Apple's stock does.

Jan 20 is the expiration date. This is the deadline. After January 20th, this contract does not exist anymore. Gone. If you have not used it or sold it by then, it disappears.

$100 is the strike price. Remember the house? You locked in $100,000 as your purchase price. Same idea here. This call locks in $100 as the price you can buy Apple at, no matter what the stock is actually trading at.

Call is the contract type. There are only two types in the entire options market. Calls give you the right to buy. Puts give you the right to sell. That is the whole list.

$3.00 is the premium. Remember the $2,000 you paid the homeowner? That was the premium. This is the same thing. It is what the contract costs you. You pay this whether things go your way or not.

Five pieces. That is the entire anatomy of every options contract ever created.

The 100-Share Rule

This one trips up almost every beginner, so let me be very clear about it.

One options contract controls 100 shares. Always. Every time. No exceptions.

So when you see that $3.00 price tag, you are not paying $3.00 total. You are paying $3.00 per share, times 100 shares. That is $300 per contract.

Now compare that to buying the stock directly. Apple at $100 means 100 shares costs you $10,000. Or you could buy one call option for $300 and control those same 100 shares. Remember how the house deal cost you $2,000 instead of $100,000? Same principle. A fraction of the money, the same opportunity.

Both positions profit if Apple goes up. But one of them has $10,000 on the line and the other has $300. That difference is what makes options so interesting. And also why they require a different kind of respect.

Two Sides of Every Trade

Every options trade has a buyer and a seller. They are making opposite bets, and their risk profiles are completely different.

The buyer pays the premium and gets a right. The right to buy (call) or sell (put) at the strike price. The most the buyer can lose is the premium they paid. That is it. Their worst case is defined before they even enter the trade.

The seller collects the premium and takes on an obligation. If the buyer decides to use their right, the seller has to follow through. Remember the homeowner? He took your $2,000 and hoped you would never show up to buy. That is exactly what an options seller does. The seller's upside is limited to the premium they collected, but their downside can be much larger.

Think of it like car insurance. You pay a premium every month. The insurance company collects it. Most months, nothing happens and the insurance company keeps your money. But when something does happen, they are the ones writing the check.

What Happens When the Clock Runs Out?

Every option has an expiration date. When that date arrives, one of two things happens.

If the option is worth something, it gets exercised. Say you own a $100 call and Apple is trading at $110. Your contract lets you buy at $100 when everyone else is paying $110. That is $10 of real value. Most brokers will automatically exercise this for you.

If the option is not worth anything, it expires and disappears. If you own a $100 call and Apple is at $90, why would you buy at $100 when you could buy cheaper on the open market? You would not. The contract just goes away. You are out the premium you paid, and that is the end of it.

Here is something that surprises most beginners. You almost never hold an option until expiration. The majority of options traders buy and sell contracts before the deadline, the same way you would buy and sell a stock. You do not have to exercise anything. You just sell the contract to someone else at whatever it is worth at that moment.

When I first started trading options, back when my portfolio was smaller than my coffee budget, I thought you had to hold everything until expiration. Treated every contract like a marriage. Took me about two weeks to figure out that most experienced traders are in and out well before the deadline. That one realization probably saved me more money than anything else I learned that year.

How Options Come Into Existence

Stocks have a fixed number of shares. A company issues them, and that is the supply.

Options are different. They are created on the spot, every time a new buyer and a new seller agree on a trade. This is called opening a position. The contract did not exist before they agreed. Now it does.

When both sides eventually close their positions, the contract disappears. It was born from the agreement and it dies when the agreement is settled.

This also means that for every dollar someone makes on an options trade, someone else loses a dollar on the other side. There is always a counterparty. Your win is someone else's loss, and the other way around.

Bottom Line

Every options contract is built from five pieces: the underlying stock, the contract type (call or put), the strike price, the expiration date, and the premium. One contract always controls 100 shares. There is always a buyer and a seller on opposite sides of the trade. And you can buy or sell the contract at any point before expiration, just like a stock.

That screen full of numbers in your brokerage app? It is just these five pieces, repeated hundreds of times for different strikes and dates. Not so bad once you know what you are looking at.

Next up: Call Options Explained →

We are going to take one of those two contract types, the call, and walk through exactly how it makes money, when you would use it, and what a real trade looks like from start to finish.