Learn options · plain language
What are options on stocks
An option is a contract about a stock, not a piece of the company. Owning one gives you a right tied to a price and a date; it does not make you a shareholder.
There are only two kinds. A call is the right to buy at a set price. A put is the right to sell at a set price. Everything else in options is built from those two, in combinations.
Why they expire, and why that matters more than anything
Every contract has a date after which it is void. That is the feature that makes options different from shares in the way that matters most to a beginner.
A share can be wrong for years and recover. An option can be right about the direction, late by two weeks, and pay nothing. Time is a cost you carry whether or not the stock moves.
The four things every contract states
The underlying, which is the stock it is written on. The strike, which is the locked price. The expiry, which is the deadline. And the type, call or put.
Quoted prices are per share and contracts almost always cover 100 shares, so a price of 1.20 means $120. That multiplier is where most early sizing errors come from.
There are two sides and they are not symmetrical
Buyers pay premium and get a right. Their maximum loss is what they paid. Sellers receive premium and take on an obligation, with a maximum gain of what they received.
That asymmetry is the whole shape of options risk. Buyers lose small amounts often; sellers make small amounts often and can lose large amounts rarely.
The two ways people actually lose
The first is obvious: the stock goes the wrong way. The second is quieter: the stock does nothing, time passes, and the contract decays to zero while you were technically not wrong.
The second one surprises people, because nothing visibly went against them.
Reading a contract
| Written as | AAPL 21 Mar $200 Call @ 3.40 |
|---|---|
| Underlying | AAPL |
| Expiry | 21 March |
| Strike | $200 |
| Type | Call, the right to buy |
| Cost | 3.40 per share, so $340 for one contract |
| Break-even at expiry | $203.40 |
Every option quote you will see is this same six-part sentence in a shorter form.
Run the numbers in the options profit calculator, free and with no sign-up.
Where this goes wrong
Thinking options are shares with leverage
Leverage is part of it, but the expiry is the part that bites. Shares do not go to zero because a date passed.
Sizing by contract count instead of dollars
Ten contracts sounds small and can be $10,000 of risk. Size by what you can lose, not by how many lines are on the screen.
Learning on multi-leg strategies
Spreads and condors are combinations of the two basic contracts. Taking them on before the single leg is clear means debugging four things at once.
Common questions
Do I need to own the stock to trade options on it?
To buy a call or a put, no. To sell a call safely, yes, which is what covered means. Selling without the shares carries much larger risk.
What does in the money mean?
A call is in the money when the stock is above the strike, and a put when it is below. It describes whether the contract would be worth anything if it expired right now.
Are options riskier than stocks?
Per dollar committed, usually yes, because of expiry and leverage. A bought option also has a fixed maximum loss, which a short stock position does not. Risk depends on the position, not the instrument.
Write the trade down before you forget why
Reading about options is the easy half. Knowing which of your setups actually pays takes a record of what you did and what happened. TickerReplay rebuilds every trade from your broker's fills, keeps spreads, rolls, and assignments whole, and turns them into win rate, expectancy, and R.
Start free30 trades per rolling 30 days. No card, no trial.
This is education, not advice, and nothing here predicts an outcome. Options carry risk of total loss on the premium paid and larger losses when sold. SES Technology Ventures LLC.