Options Part 1: The Basics

Options are the tool that confuses almost every new trader — and the tool that can empty a beginner's account faster than anything else if it is used before it is understood. This chapter fixes the first problem so you never suffer the second.

By the end of this chapter, you will know what an option is, how calls and puts work, what every number on an option means, what happens when time runs out, and how to read an option chain. We start from zero.

Start With the Core Idea: An Option Is a Contract, Not a Share

When you buy a stock, you buy a small piece of a company. You own something real, with no expiration date — you can hold it for fifty years.

An option is completely different. An option is a contract — a written agreement between two people — that gives one of them a right for a limited time. You do not own any part of the company. You own a deal, written in exact terms, with an end date.

Every option contract answers four questions before money changes hands:

• Which stock? (For example, Apple, ticker AAPL.)
• What price? A locked-in price, called the strike price.
• Which direction? The right to buy, or the right to sell.
• By when? An expiration date — the day the contract dies.

Here is the analogy. Imagine a house for sale at $300,000. You are not ready to buy today, but you think the neighborhood is about to get popular. So you pay the owner $5,000 for a signed agreement: "You may buy this house for $300,000 any time in the next six months, even if the price goes up. The $5,000 is mine to keep no matter what."

• If the house's market price jumps to $340,000, your agreement is gold: you buy at $300,000, a price nobody else can get.
• If the price falls to $270,000, you walk away — why buy at $300,000 when anyone can buy at $270,000? You lose only the $5,000.
• Either way, the $5,000 is gone. That was the cost of holding the price.

That is an option. The $5,000 is like the option's price (the premium). The $300,000 is the strike price. The six months is the time until expiration. And the big difference from buying the house: you controlled the deal for $5,000, never putting up $300,000.

Calls: The Right to Buy

A call option gives the buyer the right to buy 100 shares of a stock at the strike price, at any time before the expiration date — no matter how high the market price goes.

You would buy a call when you believe a stock is going up.

Worked example — buying a call.

• The stock XYZ trades at $50 per share today.
• You buy 1 call contract with a strike price of $52 — the right to buy XYZ at $52.
• The premium (the option's price) is $2.50.
• Premiums are quoted per share, but a contract covers 100 shares, so your real cost is $2.50 × 100 = $250. That $250 leaves your account the moment you buy, and it is the most you can ever lose on this trade.

Now three futures:

Case 1 — right, and big. XYZ rises to $60 by expiration. Your right to buy at $52 is worth $60 − $52 = $8 per share. $8 × 100 = $800 of value. You paid $250, so your profit is $800 − $250 = $550.

Case 2 — right, but only a little. XYZ rises to $53. Your advantage is $1 per share, or $100. You paid $250, so you lose $150 — even though the stock went up! The stock must go up enough, not just up.

Case 3 — wrong. XYZ stays at $50, or falls. A right to buy at $52 is useless when anyone can buy cheaper in the open market. The contract expires worth $0, and you lose the full $250.

Case 2's breaking point has a name: the breakeven price, where the trade makes exactly zero. For a call: breakeven = strike + premium = $52 + $2.50 = $54.50. At expiration, XYZ must be above $54.50 for this call to have made money.

Puts: The Right to Sell

A put option gives the buyer the right to sell 100 shares of a stock at the strike price, at any time before the expiration date — no matter how low the market price falls.

You would buy a put when you believe a stock is going down.

Worked example — buying a put.

• The stock ABC trades at $80 per share.
• You buy 1 put contract with a strike price of $78 — the right to sell ABC at $78.
• The premium is $2.00, so your cost is $2.00 × 100 = $200 — again, the most you can lose.

Case 1 — right. ABC falls to $70. Your right to sell at $78 is worth $78 − $70 = $8 per share = $800. Profit: $800 − $200 = $600.

Case 2 — barely right. ABC falls to $77. Your advantage is $1 per share = $100. You paid $200, so you lose $100. Breakeven for this put is $78 − $2.00 = $76: ABC must fall below $76 by expiration for the trade to profit.

Case 3 — wrong. ABC rises to $85. A right to sell at $78 is worthless when the market happily pays $85. The put expires at $0 and you lose the $200.

Buyer vs. Seller: Two Sides of Every Contract

Every option trade has two people. The buyer pays the premium and receives the right. The seller — also called the writer — receives the premium and accepts an obligation. The two sides have opposite risk profiles:

• The buyer can lose only the premium paid — never more. Their possible gain is large. But they must be right on direction and timing — the contract dies at expiration.
• The seller collects money up front and profits when nothing dramatic happens — if the contract expires worthless, the seller keeps the whole premium. But their risk is large: a sold call obligates them to deliver shares at the strike no matter how high the stock flies; a sold put obligates them to buy at the strike even if the stock collapses.

Think of it like insurance. A policy buyer pays a modest premium and is protected against disaster. The insurance company collects premiums from many people and does fine — until a disaster hits and it pays out far more than it collected. Option sellers sit in that chair: steady small wins, with rare but heavy losses if they are careless.

The Vocabulary on Every Option: Strike, Expiration, and Moneyness

You already know strike price and expiration date. Many stocks offer contracts expiring every week ("weeklies"), plus monthly expirations further out. The further away the expiration, the more the option usually costs — more time means more chance for the stock to move.

Traders describe an option by how its strike compares to the stock's current price — its moneyness. There are three states:

Check this against the examples. The XYZ call had a $52 strike with the stock at $50 — strike above the stock price, so that call was out of the money when purchased. Beginners often buy out-of-the-money options because they are cheaper — but cheap also means the stock has further to travel before the option gains real value.

What an Option's Price Is Made Of: Intrinsic and Extrinsic Value

Every option's premium is built from two ingredients.

Intrinsic value is what the option would be worth if it expired right now — the built-in advantage of its strike over the market price.

• The XYZ call (strike $52) with the stock at $60 has intrinsic value of $60 − $52 = $8 per share.
• At or below $52, that call's intrinsic value is $0 — out-of-the-money options always have zero intrinsic value.

Extrinsic value (also called time value) is everything else in the price — what buyers pay for the possibility that the stock moves before expiration. Time is opportunity: a contract with three months left has far more chances to become profitable than one with three hours left.

premium = intrinsic value + extrinsic value.

Watch it work. XYZ is at $60, and the $52 call trades at $8.60. Intrinsic value is $8.00, so extrinsic value is $8.60 − $8.00 = $0.60 — buyers pay 60 cents per share for the remaining time. As expiration approaches, extrinsic value melts away; at expiration it is always exactly $0, and an option is worth only its intrinsic value. This melting is the central fact of options, and the next chapter is devoted to measuring it.

What Happens at Expiration

At expiration, every option is settled by one rule: an option is worth the distance the stock finished past the strike, times $100 per contract — or zero if it did not finish past the strike.

• A call finishes in the money if the stock closes above the strike. Final value = (stock price − strike) × 100. Stock at $60, strike $52 → $800 per contract.
• A put finishes in the money if the stock closes below the strike. Final value = (strike − stock price) × 100. Stock at $70, strike $78 → $800 per contract.
• An option that finishes out of the money is worth $0 — the premium is gone.

Most traders do not wait for expiration. An option can be sold back into the market any time before expiration, at its current price — still including whatever extrinsic value remains. That is how most option trades are actually closed. Waiting means accepting the all-or-nothing settlement above.

Exercise and Assignment: The Two Ends of the Right

Exercise is what the buyer does when they use their right: exercising a call means actually buying the 100 shares at the strike; exercising a put means actually selling 100 shares at the strike.

Assignment is the other end: when the buyer exercises, the seller is assigned — chosen by the system — and must honor the deal, delivering the shares (call) or buying them (put) at the strike price.

Almost no beginner needs to exercise early — selling the option usually captures more value, because you keep the extrinsic value instead of throwing it away. But exercise and assignment explain why the seller's risk is real: the buyer can pull the trigger whenever the contract allows.

American vs. European Style: When the Right Can Be Used

Options come in two styles:

• American-style options can be exercised at any time before expiration. Nearly all options on individual US stocks and ETFs are American-style. (An ETF is a fund that trades like a stock, holding a basket of investments.)
• European-style options can be exercised only at expiration. Most index options — options on an index like the S&P 500 (ticker SPX) — are European-style. An index is a number tracking a group of stocks; it is not a company you can own directly.

Index options are also cash-settled: there are no shares of an index to deliver, so at expiration the value is simply paid in cash — the distance past the strike, times the contract's dollar multiplier. With a stock option exercised into shares, real stock changes hands instead.

Why People Buy Options

With all these warnings, why does anyone touch options? Three honest reasons:

• Leverage. A small amount of money controls 100 shares. In the XYZ example, $250 controlled a position that gained $550 on a $10 stock move; buying 100 shares outright would have cost $5,000. Leverage magnifies percentages — in both directions.
• Defined risk. A buyer's maximum loss is known on day one: the premium. No margin calls, no losing more than you paid.
• Protection (hedging). A hedge is a position that reduces the risk of another position — like insurance. Own 100 shares of ABC at $80 and fear a drop? One $78 put (cost: $200 in our example) guarantees you can sell at $78 no matter how far ABC falls before expiration. Many investors buy puts exactly the way they buy homeowners insurance: hoping to never need them.

Why Options Are Dangerous for Beginners

The four dangers, stated plainly:

• The clock. Your deadline is fixed, and stocks do not care about your expiration date.
• The double hurdle. You must be right on direction and size of move. A small move in your favor can still lose money (remember XYZ at $53).
• The melt. Extrinsic value drains daily, faster as expiration nears. You hold a melting ice cube.
• The temptation of cheap. Very cheap options are cheap because the market believes the needed move is unlikely. Buying them is closer to a lottery ticket than an investment.

None of this means "never trade options." It means learn the mechanics first — which is what you are doing — start small, and respect the clock.

Reading an Option Chain

Options are displayed in a table called an option chain — one row per strike price, usually calls on the left and puts on the right. What the columns mean:

• Strike — the strike price for that row.
• Bid — the highest price a buyer currently offers. Sell right now at the market, and this is roughly what you receive.
• Ask — the lowest price a seller currently accepts. Buy right now at the market, and this is roughly what you pay.
• Last — the price of the most recent trade. It can be stale (old) on quiet options — trust bid and ask more.
• Volume — contracts traded today. High volume = active, easier trading.
• Open interest — contracts that exist right now, not yet closed. High open interest generally means an active, liquid (easy to trade) option.
• Implied volatility (IV) — a percentage expressing how much movement the market expects, baked into the price. High IV means expensive options. The next chapter explains this in depth.

The gap between bid and ask is called the spread. On popular stocks, a few cents; on quiet ones, a dollar or more. A wide spread is a hidden cost: you overpay entering and get underpaid leaving. Favor options with high volume, high open interest, and tight spreads.

Common Beginner Mistakes

• Buying an option without knowing its expiration date — then being surprised when it expires.
• Thinking a $0.50 premium is "cheap" — it is $50 per contract, and cheap options are priced low because the required move is unlikely.
• Forgetting the × 100. A $2.50 premium is $250. Size every trade in real dollars.
• Buying far out-of-the-money options expiring in days, hoping for a miracle — the classic way beginners donate money to the market.
• Ignoring the spread. Paying a $2.00 ask when the bid is $1.20 starts the trade deep underwater.
• Holding to expiration by accident. Know whether you plan to sell the option or let it settle — and what settlement means for your account.
• Risking rent money on leverage. A capped loss per trade does not make a string of total losses painless.

Chapter Summary

• An option is a contract, not a share: a right, with a strike price and an expiration date, controlling 100 shares.
• A call is the right to buy at the strike; a put is the right to sell at the strike.

• Premium is quoted per share; multiply by 100 for the true cost per contract — also the buyer's maximum loss.
• Call breakeven = strike + premium. Put breakeven = strike − premium.
• Buyers get rights with limited risk; sellers (writers) get the premium and accept obligations with large risk.
• Options are in, at, or out of the money based on strike versus the stock's price.
• Premium = intrinsic value (built-in advantage, if any) + extrinsic value (payment for time and possibility) — and extrinsic value melts to zero at expiration.
• At expiration an option pays the distance past the strike × $100 — or nothing.
• Exercise is the buyer using the right; assignment is the seller made to honor it. American style: exercise any time. European style: expiration only, and index options settle in cash.

Check Yourself

1. A call has a strike of $40 and a premium of $1.50. What does one contract cost, and what is the breakeven at expiration?
2. A stock trades at $95. Is a $100 call in, at, or out of the money? What about a $100 put?
3. A put has a strike of $60 and the stock finishes expiration day at $52. What is one contract worth?
4. Who has more risk — the buyer or the seller — and why?
5. An option's premium is $3.20 and its intrinsic value is $2.00. How much extrinsic value are you paying, per share and per contract?

Show answers

Answers: 1) $1.50 × 100 = $150 per contract; breakeven = $40 + $1.50 = $41.50. 2) The $100 call is out of the money (strike above the stock price); the $100 put is in the money (selling at $100 already has value when the stock is $95). 3) ($60 − $52) × 100 = $800 per contract. 4) The seller — the buyer's loss is capped at the premium, while the seller must honor the contract no matter how far the stock moves. 5) $3.20 − $2.00 = $1.20 per share = $120 per contract — the price of time and possibility, and the part that melts away by expiration.