What Are Options Contracts? A Clear Beginner's Guide

The Core Idea: Rights Without Obligations

When you buy a stock, you own a piece of the company — you are obligated to hold it until you choose to sell it, and you profit or lose based on whether the stock goes up or down.

When you buy an options contract, you are not buying the stock. You are buying a right to a future transaction at terms that are locked in today. Critically, you have a right but not an obligation — you can choose to exercise that right or let the contract expire without doing anything.

This right-without-obligation structure is what makes options flexible and powerful, but also more complex than stocks.

The Two Types: Calls and Puts

Call Options

A call option gives the buyer the right to BUY 100 shares of the underlying stock at the strike price, at any time before expiration (American-style) or only at expiration (European-style).

When you buy a call, you are betting (or hedging) that the stock will rise above the strike price before expiration. If it does, you can exercise your right to buy at the lower strike price and profit from the difference — or more commonly, sell the call contract itself for a higher price than you paid for it.

Example: You buy a call option on XYZ with a $50 strike expiring in 30 days. XYZ is trading at $48. You paid $1.50 per share × 100 shares = $150 for the contract. If XYZ rises to $55, your call is worth approximately $5 (the difference between $55 and $50), a profit of $350 on a $150 investment. If XYZ stays below $50, the call expires worthless and you lose your $150.

Put Options

A put option gives the buyer the right to SELL 100 shares of the underlying stock at the strike price before expiration.

When you buy a put, you are betting (or hedging) that the stock will fall below the strike price before expiration. If it does, you can exercise your right to sell at the higher strike price and profit from the difference — or sell the put contract for a higher price.

Example: You buy a put option on XYZ with a $50 strike expiring in 30 days. XYZ is at $52. You paid $1.20 per share × 100 = $120. If XYZ falls to $44, your put is worth approximately $6, a profit of $480 on a $120 investment. If XYZ stays above $50, the put expires worthless.

The Key Terms

Strike Price

The price at which you have the right to buy (call) or sell (put) the stock. The strike is set at the time you buy the contract and does not change. Options are available at multiple strikes — typically in $1, $2.50, or $5 increments depending on the stock's price — from far below to far above the current stock price.

Strikes are described in relation to the current stock price:

• In-the-money (ITM): The strike is already favorable. For calls: strike is below current price. For puts: strike is above current price.
• At-the-money (ATM): The strike is approximately equal to the current price.
• Out-of-the-money (OTM): The strike would require a move to become profitable. For calls: strike is above current price. For puts: strike is below current price.

Expiration Date

Every options contract has an expiration date — the last day the contract can be exercised. After expiration, the contract ceases to exist. If you have not exercised the contract or sold it, and it expires worthless (OTM), you simply lose the premium you paid. Nothing more happens automatically.

Options expirations are available at different frequencies: weekly (every Friday), monthly (third Friday of the month), and quarterly. The most liquid options — and the ones that matter most for market structure — tend to be the monthly expirations, particularly the third Friday of each month (monthly OpEx).

Premium

The price you pay for the options contract. This is the maximum you can lose as a buyer — you cannot lose more than the premium paid on a long options position.

Premium has two components:

• Intrinsic value: The amount by which the option is already ITM. A call with a $50 strike when the stock is at $54 has $4 of intrinsic value. OTM options have zero intrinsic value.
• Extrinsic value (time value): The remaining premium above intrinsic value — the market's pricing of uncertainty. Time value is what decays each day. At expiration, all extrinsic value is gone — only intrinsic value remains.

Contract Size

One standard U.S. equity options contract controls 100 shares. When a call is quoted at $1.50, you pay $1.50 × 100 = $150 per contract. This is not the price of one share of optionality — it is the price for rights over 100 shares.

How Options Make or Lose Money

There are three outcomes for any options buyer:

• The option expires worthless: The stock did not move to make the option ITM. You lose the entire premium paid. This is the most common outcome for OTM options buyers — statistically, most options expire worthless.
• The option is sold before expiration: Most options traders sell their contracts on the market rather than exercising them. If the stock moved in the expected direction, the option gained value and can be sold for a profit. If not, it is sold at a loss to avoid total premium loss.
• The option is exercised: The buyer uses their right to buy or sell stock at the strike price. This is less common for retail traders and usually only happens for deep ITM options near expiration.

For sellers (the other side of every options contract), the outcomes are reversed: they collect the premium upfront, and their goal is for the option to expire worthless so they keep the full premium.

Why Options Behave Differently from Stocks

The most important thing to understand about options as a new trader: options do not move dollar-for-dollar with the stock. Several factors affect how much an option moves:

• Delta: How much the option price changes per $1 move in the stock. An ATM call with delta 0.50 moves $0.50 for each $1 stock move. An OTM call with delta 0.20 moves only $0.20.
• Theta (time decay): Every day that passes, options lose some of their extrinsic value — even if the stock does not move at all. This works against buyers and in favor of sellers.
• Implied Volatility: When the market prices in higher uncertainty, all options become more expensive. When IV falls (IV crush), options lose value even if the stock stays flat.

A stock buyer only needs to be right about direction. An options buyer needs to be right about direction, timing (before expiration), and magnitude (enough to overcome the premium paid and time decay). This is why options trading has a steeper learning curve than stock trading.

What Options Flow and GEX Levels Add

Once you understand the basics of options contracts, the next layer is understanding how the collective mass of options contracts in the market creates structural effects on price.

When large institutions buy enormous quantities of options — particularly on major indices like SPX and SPY — the market makers who sell them those options must hedge their resulting exposure. That hedging (buying and selling the underlying as price moves) creates mechanical support and resistance at certain price levels. This is the foundation of Gamma Exposure (GEX) analysis.

The GEX Levels Indicator overlays these structural price levels — Call Wall, Put Wall, Gamma Flip — directly on your TradingView charts, so you can see where the aggregate options market is creating mechanical forces on price.

Going Deeper: From Basics to Professional Options Flow

Understanding what options are is the first step. The next steps — reading options chains, interpreting options flow, understanding GEX structural analysis, integrating IV data, and building a systematic daily workflow — make up the curriculum of the GEX Levels Education Library.

The Library covers 19 modules from options fundamentals through advanced flow interpretation, GEX mechanics, order flow, and execution methodology. It is designed specifically for traders who want to go beyond the surface of "calls go up, puts go down" into a professional-grade understanding of options market mechanics.