---
title: "Understanding Options Contracts: Strike, Expiration, Premium"
description: "Learn how strike price, expiration date, and premium define every options contract, and how each one affects your risk and return when selling puts and calls."
author: "Adrian Rosebrock"
date: 2026-04-20
lastmod: 2026-04-20
canonical: https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/
image: https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/header.jpg
categories: ["Options Fundamentals"]
---

> For the complete WheelMetrics content index, see [llms.txt](https://wheelmetrics.io/llms.txt). This is the Markdown edition of https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/.

# Understanding Options Contracts: Strike, Expiration, Premium

By Adrian Rosebrock · Last updated April 20, 2026 · 13 min read

I used to stare at an options chain and just..._pick one._

No real logic. 

No framework. 

Just vibes and a vague sense that "this one looks good."

Could I have been more systematic? 

Absolutely. 

But I didn't know _what_ to be systematic about.

**Every options contract is defined by three components:** 

1. Strike price (the price level)
2. Expiration date (the time horizon)
3. Premium (the cost or income)

These three interact with each other, and understanding those interactions is what separates guessing from intentional trading.

In [What Are Stock Options? A Beginner's Guide](https://wheelmetrics.io/blog/what-are-stock-options/), we introduced these terms. Now let's unpack each one so you actually _understand_ what you're looking at when you open an options chain.

We'll walk through strike, expiration, and premium individually, then show how they interact, then connect everything to [The Wheel Strategy](https://wheelmetrics.io/blog/wheel-strategy-guide/).

**Table of Contents**

- [What Makes Up an Options Contract?](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#what-makes-up-an-options-contract)
- [What Is a Strike Price and How Does It Affect Your Trade?](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#what-is-a-strike-price-and-how-does-it-affect-your-trade)
  - [How Strike Price Works](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#how-strike-price-works)
  - [ITM, ATM, and OTM (How Moneyness Changes the Risk/Reward Profile)](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#itm-atm-and-otm-how-moneyness-changes-the-riskreward-profile)
  - [How Strike Selection Differs for Buyers and Sellers](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#how-strike-selection-differs-for-buyers-and-sellers)
  - [How Wheel Traders Think About Strike Selection](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#how-wheel-traders-think-about-strike-selection)
- [How Expiration Dates Control Time and Risk](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#how-expiration-dates-control-time-and-risk)
  - [What Expiration Means Mechanically](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#what-expiration-means-mechanically)
  - [Weekly vs. Monthly vs. LEAPS Expirations](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#weekly-vs-monthly-vs-leaps-expirations)
  - [What Is DTE (Days to Expiration) and Why Does It Matter?](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#what-is-dte-days-to-expiration-and-why-does-it-matter)
  - [How Expiration Choice Affects the Wheel Strategy](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#how-expiration-choice-affects-the-wheel-strategy)
- [What Is an Options Premium (and What Drives It)?](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#what-is-an-options-premium-and-what-drives-it)
  - [How Premium Is Quoted and What It Represents](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#how-premium-is-quoted-and-what-it-represents)
  - [Intrinsic Value vs. Extrinsic (Time) Value](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#intrinsic-value-vs-extrinsic-time-value)
  - [What Drives Premium Higher or Lower?](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#what-drives-premium-higher-or-lower)
  - [Why Premium Is Your Paycheck in the Wheel Strategy](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#why-premium-is-your-paycheck-in-the-wheel-strategy)
- [How to Apply Strike, Expiration, and Premium to the Wheel Strategy](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#how-to-apply-strike-expiration-and-premium-to-the-wheel-strategy)
  - [Covered Calls (Same Framework, Other Side of the Wheel)](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#covered-calls-same-framework-other-side-of-the-wheel)
  - [Necessary but Not Sufficient](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#necessary-but-not-sufficient)
- [Where to Go from Here](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/#where-to-go-from-here)

## What Makes Up an Options Contract?

Every options contract is defined by three core components:

1. **Strike price:** The price at which you can buy or sell the underlying stock
2. **Expiration date:** The deadline by which the contract must be exercised or it expires worthless
3. **Premium:** The price you pay (as a buyer) or collect (as a seller) for the contract

**One contract always represents 100 shares.** Multiply the per-share premium in the chain by 100 to get the actual dollar cost.

Think of an options contract like a ticket with three fields printed on it: the price level (strike), the expiration date, and the cost of the ticket (premium).

Change any one field and you're holding a _different ticket_ with a _different risk/reward profile._

**These three components don't exist in isolation.** 

They push and pull on each other (there's a reason physicists make good options traders), and understanding those interactions is what separates beginners from confident traders.

## What Is a Strike Price and How Does It Affect Your Trade?

![Price tag](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/price-tag.jpg)

Think of the strike price as a "price tag".

### How Strike Price Works

The strike price is the price at which you agree to buy (for calls) or sell (for puts) the underlying stock if the option is exercised.

It's fixed when the contract is created. It never changes over the life of the option.

The options chain lists multiple strikes for any given expiration, and you choose the one that matches your outlook and risk tolerance.

### ITM, ATM, and OTM (How Moneyness Changes the Risk/Reward Profile)

If you read [What Are Stock Options?](https://wheelmetrics.io/blog/what-are-stock-options/), you've already seen these terms. Now let's go deeper on the tradeoffs.

- **ITM (In the Money)** means the option has intrinsic value right now
    - Calls: stock price is above the strike
    - Puts: stock price is below the strike
    - Higher premium, higher probability of profit, but more capital at risk
- **ATM (At the Money)** means the stock price is at or near the strike
    - Roughly 50/50 probability of finishing ITM
    - Moderate premium
- **OTM (Out of the Money)** means the option has no intrinsic value
    - Calls: stock price is below the strike
    - Puts: stock price is above the strike
    - Cheaper premium, lower probability of profit, but less capital at risk

Let's make this concrete with `CDE` (Coeur Mining) at $22.28 using the Apr 17, 2026 expiration:

![CDE options chain showing put strike prices and premiums for Apr 17, 2026 expiration](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/cde-strikes.png)

Looking at the image above:

- $20 put = OTM (stock is above the strike), ask premium $1.25
- $22.50 put = roughly ATM, ask premium $2.45
- $25 put = ITM (stock is below the strike), ask premium $4.10

**Every premium reflects a different probability:** 

- The $25 ITM put costs $4.10 because it's _very likely_ to stay in the money
- The $20 OTM put costs $1.25 because the stock would need to _drop significantly_ before that option has any intrinsic value

### How Strike Selection Differs for Buyers and Sellers

These are two sides of the same coin.

**Buyers** want the stock to move _past_ their strike. 

They're picking a target price:

- Buying OTM = cheaper bet, needs a bigger move to profit
- Buying ITM = more expensive, but the stock doesn't need to move as far

**Sellers** want the stock to stay _away_ from their strike. 

They're picking a buffer zone:

- Selling OTM = lower premium collected, but higher probability the option expires worthless (seller keeps premium)
- Selling ITM = higher premium collected, but higher chance of assignment

### How Wheel Traders Think About Strike Selection

**For Wheel traders selling cash-secured puts, strike selection equates to choosing the price you're willing to buy the stock at.**

Selling OTM puts gives you a margin of safety. 

_You're getting paid to wait for a discount._

But strike selection alone isn't enough. 

You also need to factor in [delta (probability of assignment)](https://wheelmetrics.io/blog/understanding-delta-wheel-strategy/) and implied volatility (whether the premium is rich enough to justify the risk).

Here's how delta, probability, and premium shift across strikes:

| Strike | Moneyness | Approx. Delta | Approx. Probability of Profit (Sellers) | Ask Premium |
|--------|-----------|---------------|----------------------------------------|-------------|
| $20.00 | OTM | -0.20 | ~80% | $1.25 |
| $22.50 | ATM | -0.50 | ~50% | $2.45 |
| $25.00 | ITM | -0.80 | ~20% | $4.10 |

_**Note:** These delta values are general educational ranges, not CDE-specific. A later article in this series covers delta in depth._

The pattern is clear: 

As you move further OTM, delta drops, probability of profit increases (for sellers).

But...the downside is that as your probability of profit _increases_, your premium _decreases_ (meaning you'll make less money).

**It's always a tradeoff.** No free lunches at the options buffet.

## How Expiration Dates Control Time and Risk

![Hourglass](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/hourglass.jpg)

### What Expiration Means Mechanically

The expiration date is the deadline. After this date, the contract ceases to exist.

If the option is ITM at expiration, it's typically auto-exercised. 

If OTM, it expires worthless.

Once expired, the rights (for buyers) and obligations (for sellers) are gone.

### Weekly vs. Monthly vs. LEAPS Expirations

| Type | Typical DTE | Premium Level | Theta Decay Speed | Liquidity | Wheel Relevance |
|------|-------------|---------------|-------------------|-----------|-----------------|
| **Weeklies** | <7 days | Low | Fastest | Varies | Some Wheelers use 7-15 DTE for quick turnover |
| **Monthlies** | 30-45 days | Moderate | Accelerating | Generally strong | Most common Wheel timeframe |
| **LEAPS** | 365+ days | Highest | Slowest | Lower | Rarely used for the Wheel |

Not all expirations are created equal.

- **Weeklies** expire every Friday (typically <7 DTE). Rapid theta decay, quick turnover, but less premium collected per trade.
- **Monthlies** follow the standard cycle (third Friday of each month). Solid premium, well-established liquidity, good balance of time and decay.
- **LEAPS** (Long-Term Equity Anticipation Securities) go out 1+ year. Maximum premium, but capital is tied up longer and theta decay is slowest. Rarely used for Wheel traders.

### What Is DTE (Days to Expiration) and Why Does It Matter?

![CDE options chain showing available expiration dates from Mar 13 to Apr 24, 2026 with days to expiration](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/cde-options-available.png)

**DTE is simply how many calendar days remain until expiration.**

It's the primary driver of time value in the premium. More DTE means more time value.

**Theta decay accelerates as DTE decreases, _especially_ inside 45 DTE.** This is where time starts working hardest in your favor as a seller.

Here's what real expirations look like for `CDE`:

- Mar 13 (2 DTE)
- Mar 20 (9 DTE)
- Mar 27 (16 DTE)
- Apr 02 (22 DTE)
- Apr 10 (30 DTE)
- Apr 17 (37 DTE)
- Apr 24 (44 DTE)

That range from 2 days to 44 days gives you a spectrum of time horizons, each with different premium and decay characteristics.

### How Expiration Choice Affects the Wheel Strategy

**30-45 DTE is where theta decay starts accelerating.** This is a common approach (and my personal preference) because you get a good balance of premium collected vs. time exposed.

But some Wheelers prefer shorter DTEs (7-15 days), and that's a legitimate alternative.

The tradeoff:

- **Longer DTEs (30-45)** = more premium to harvest, but more time for the trade to go against you (earnings, news, market events)
- **Shorter DTEs (7-15)** = less premium per trade, but you only have to be "right" (or "less wrong") for a shorter window

Both approaches have advantages. Your mileage may vary.

## What Is an Options Premium (and What Drives It)?

![Money](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/money.jpg)

### How Premium Is Quoted and What It Represents

The premium is the price of the options contract. What you pay as a buyer, or what you collect as a seller.

It's quoted per-share in the options chain. Each option contract consists of a bundle of 100 shares.

A premium of $1.50 means the contract costs $150 ($1.50 x 100 shares).

### Intrinsic Value vs. Extrinsic (Time) Value

![CDE options chain showing put strike prices and premiums for Apr 17, 2026 expiration](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/cde-strikes.png)

Every premium is made up of two components: intrinsic value and extrinsic value.

- **Intrinsic value:** How much the option is worth if exercised right now. Only ITM options have intrinsic value.
- **Extrinsic value:** Everything else. Time remaining, volatility, uncertainty. 

Let's break this down with two `CDE` examples using the screenshot at the top of this section.

#### OTM Example (All Extrinsic)

- `CDE` at $22.28, the $20 put (OTM)
- Intrinsic value = $0 (it's OTM, no value if exercised now)
- Ask premium = $1.25
- **The entire $1.25 is extrinsic value** (time + volatility)

#### ITM Example (Intrinsic + Extrinsic)

- `CDE` at $22.28, the $25 put (ITM)
- Intrinsic value = $25.00 - $22.28 = $2.72 (what it's worth if exercised right now)
- Ask premium = $4.10
- Extrinsic value = $4.10 - $2.72 = $1.38 (the time and uncertainty portion)

**Even ITM options have extrinsic value.** You're paying $2.72 for the intrinsic value plus $1.38 for remaining time and volatility.

That $1.38 will erode as expiration approaches. The $2.72 won't (unless the stock moves).

Once you see this breakdown, you can't unsee it. Every premium in the chain becomes a puzzle you can take apart.

### What Drives Premium Higher or Lower?

Three primary forces drive premium:

1. **More time to expiration** = higher premium (more uncertainty about where the stock ends up)
2. **Closer to the money (or ITM)** = higher premium (higher probability of being exercised)
3. **Higher implied volatility (IV)** = higher premium (market expects bigger moves, so options cost more)

IV is a big topic on its own and gets full treatment in [What Is Implied Volatility (IV)?](https://wheelmetrics.io/blog/what-is-implied-volatility/).

### Why Premium Is Your Paycheck in the Wheel Strategy

**Premium is your paycheck.**

When you sell a CSP and collect $1.50 in premium, that $150 is yours to keep no matter what happens next. 

Assigned? You keep it. 

Option expires worthless? Again, you keep it.

_**But it's not free money.**_

You're collecting that premium in exchange for the _obligation_ to buy 100 shares at the strike price if assigned. The premium is _compensation_ for that risk.

**The goal of the Wheel is to collect premium repeatedly.** 

- Sell a put
- Collect premium,
- Get assigned or let it expire
- Repeat

**Just don't confuse "repeatable income" with "risk-free income."** Those are very different things.

## How to Apply Strike, Expiration, and Premium to the Wheel Strategy

![Gears](https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/gears.jpg)

Let's pull the threads together.

When you sell a cash-secured put in the [Wheel Strategy](https://wheelmetrics.io/blog/wheel-strategy-guide/), you're making three choices at once:

1. **Strike selection:** Choosing the price you're willing to buy the stock at. Selling OTM puts gives you a margin of safety, getting paid to wait for a discount.
2. **Expiration selection:** Choosing your time horizon. 30-45 DTE is a common starting point (where theta decay accelerates), but 7-15 DTE is a legitimate alternative for quicker turnover.
3. **Premium evaluation:** Is the income worth the risk? The premium is your paycheck, but is it worth to take on the obligation to buy 100 shares if assigned? That premium needs to justify the risk.

### Covered Calls (Same Framework, Other Side of the Wheel)

Once assigned on a CSP, you sell covered calls against your shares. 

Here, the strike is the price you're willing to sell your shares at (ideally above your cost basis).

Expiration and premium follow the same tradeoffs as CSPs.

**The component that changes character is the strike, because it's now an exit price instead of an entry price.**

Sell a strike below your cost basis, and a rally forces you to sell your shares at a realized loss.

- [How covered calls actually work](https://wheelmetrics.io/blog/what-are-covered-calls/) details using your shares as collateral, how delta maps to your conviction level, and what happens when your shares get called away.
- And if you've already been assigned and you're staring at 100 shares wondering what comes next, [picking your first covered call strike](https://wheelmetrics.io/blog/sell-covered-calls-after-assignment/) walks through cost basis, delta, and DTE.

### Necessary but Not Sufficient

**Strike, expiration, and premium are the foundation.** But Wheel traders also need to factor in **delta** (probability of assignment) and **implied volatility** (whether the premium is rich enough relative to expected movement).

This article gives you the vocabulary and mechanics. The next articles in the series add the analytical tools.

Think of it this way: 

- You now understand _what_ each component does
- Delta and IV help you decide _which specific values_ to choose

That's where the _real_ fun starts.

## Where to Go from Here

Every options contract is defined by three components: 

1. Strike price (your price level)
2. Expiration date (your time horizon)
3. Premium (the cost or income)

These three interact. Change one, the others shift. Every contract is a set of tradeoffs.

**For Wheel traders, these components are the foundation of every trade.** 

You choose... 

1. A strike you're comfortable owning at
2. An expiration that balances premium vs. time exposure
3. And evaluate whether the premium justifies the risk

Make sense?

**If you want to start reading real options data**, check out our guide on [how to read an options chain](https://wheelmetrics.io/blog/how-to-read-options-chain/) -- learn to navigate the screen you'll use to place every trade.

**If you want to go deeper on the forces that move option prices**, see [the options Greeks explained](https://wheelmetrics.io/blog/options-greeks-explained/) -- the analytical tools that help you choose specific strikes and expirations.

It all ties back to the [options fundamentals hub](https://wheelmetrics.io/blog/options-fundamentals-complete-guide/), which maps the full learning path.

Next comes the decision-making framework. And _that's_ where options trading starts to feel less like guessing and more like a system.

## Frequently Asked Questions

**What is a strike price in options trading?**

The strike price is the price at which you agree to buy (for calls) or sell (for puts) the underlying stock if the option is exercised. It is fixed when the contract is created and never changes. Your choice of strike determines your risk/reward profile. Moving the strike closer to the stock price increases premium but also increases assignment risk.

**What happens when an option expires?**

If the option is in the money (ITM) at expiration, it is typically auto-exercised. If it is out of the money (OTM), it expires worthless. Once expired, all rights (for buyers) and obligations (for sellers) cease to exist.

**What is an options premium?**

The premium is the price paid by the buyer or collected by the seller for an options contract. It is quoted per-share in the options chain. Multiply by 100 for the actual dollar amount. Premium is composed of intrinsic value (built-in value for ITM options) plus extrinsic value (time remaining, volatility, and uncertainty).

**What is the difference between intrinsic and extrinsic value?**

Intrinsic value is what the option would be worth if exercised right now. Only ITM options have intrinsic value. Extrinsic value is everything else: time remaining, implied volatility, and uncertainty. For example, a $25 put on a $22.28 stock has $2.72 intrinsic value, and if the premium is $4.10, the remaining $1.38 is extrinsic value.

**What does ITM, ATM, and OTM mean?**

ITM (In the Money) means the option has intrinsic value right now. ATM (At the Money) means the stock price is at or near the strike price, giving roughly 50/50 odds. OTM (Out of the Money) means the option has no intrinsic value — for puts, the stock is above the strike; for calls, the stock is below the strike.

**How does expiration date affect options premium?**

More time to expiration means higher premium because there is more uncertainty about where the stock will end up. Theta decay (time decay) accelerates as expiration approaches, especially inside 45 DTE. This is why many Wheel traders target 30-45 DTE — they capture accelerating decay while still collecting meaningful premium.

**What is the best expiration date for selling options?**

For Wheel Strategy traders, 30-45 DTE is a common starting point because theta decay is accelerating and premium is still meaningful. Some traders prefer 7-15 DTE for quicker turnover and shorter exposure windows. Both approaches have tradeoffs. Longer DTEs collect more premium but expose you to more market risk.

**How do strike price, expiration, and premium interact?**

Changing any one component affects the others. Moving the strike closer to the stock price increases premium but increases assignment risk. Adding more time to expiration increases premium but extends your exposure to adverse moves. Every contract is a set of tradeoffs. More premium always comes with more risk or more time exposure.

**What is DTE in options trading?**

DTE stands for Days to Expiration — the number of calendar days remaining until the option contract expires. DTE is the primary driver of time value in the premium. As DTE decreases, theta decay accelerates, meaning options lose time value faster as expiration approaches.

**How do Wheel Strategy traders choose strike prices?**

Wheel traders select a strike at a price they are genuinely willing to buy the stock, typically selling OTM puts to create a margin of safety. Strike selection balances premium income against probability of assignment. Further OTM means less premium but higher probability of keeping it, while closer to ATM means more premium but higher assignment risk.


## Related articles

- [Understanding Delta: The Most Important Greek for The Wheel Strategy](https://wheelmetrics.io/blog/understanding-delta-wheel-strategy/)
- [The Options Greeks Explained: Delta, Theta, Gamma, Vega](https://wheelmetrics.io/blog/options-greeks-explained/)
- [How to Read an Options Chain](https://wheelmetrics.io/blog/how-to-read-options-chain/)

## About the author

**Adrian Rosebrock**, Founder, WheelMetrics. Hi there, I'm Adrian Rosebrock, PhD. I believe trading and investing should be systematic, not speculative. I built WheelMetrics to share the quantitative research and frameworks behind my Wheel Strategy process. My goal is to help you make smarter, more confident trading decisions. [Connect on LinkedIn](https://www.linkedin.com/in/adrian-rosebrock/)


## Disclaimer

WheelMetrics is an educational resource, not financial advice. WheelMetrics is not a registered investment advisor, broker-dealer, or financial planner. Everything here, including articles, newsletters, stock screening results, options setups, market commentary, is for educational and informational purposes only. Options trading carries substantial risk, and you can lose some or all of your capital. You're solely responsible for your own investment decisions. Consult with a qualified financial advisor before making any trades.


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*WheelMetrics content is educational and is not individualized financial advice. Source: https://wheelmetrics.io/blog/options-contracts-strike-expiration-premium/*