Call and put options
There are two main types of options contracts: calls and puts. Buying a call gives you the right to buy an underlying asset at a predetermined price when entering the options trade; the buyer of the call ideally wants the price of the underlying asset to be higher than the strike on the expiry date.
Buying a put gives you the right to sell an underlying asset at a strike price determined when entering the options trade; the buyer of the put ideally wants the price of the underlying asset to be lower than the strike on the expiry date.
Call options explained
A call option provides the holder (buyer) with a right (but not an obligation) to buy an underlying asset at the strike price. For cash-settled options, buyers receive a cash payment if the underlying price is above the strike price, at a specified expiration date and time.
If you’re the writer (seller) of a call option, you have the obligation to sell an underlying asset. For cash-settled options, writers make a cash payment if the holder/buyer exercises the option. Cash-settled options are exercised automatically when in the money.
Long call option example
Imagine that a trader expects the FTSE 100 index to rise over the coming month. The trader buys a call option at a strike price (the pre-agreed price at which an options buyer will settle the contract) of 7,500 points, expiring in one month.
The options we offer on the underlying indices have a multiplier of 1. This means that 1 option contract refers to 1 unit of the underlying index. The premium for this option is £60.
One month later when the option expires, the FTSE 100 has risen to 7,650 points. This means that the trade is ‘in the money', by £150 (7,650-7,500), and is therefore favourable to the trader.
In this scenario, the trader has generated a net profit of £90 after the cost of the premium (£60) is subtracted from the in-the-money value (£150).
However, if after one month the index settles at the same level as the strike price of 7,500 points, this is known as being ‘at the money’, where the strike price and the underlying asset’s current price are the same. In this scenario, the option would not be exercised, and the trader would therefore lose the premium of £60.
If the underlying asset price is below the level of the strike price, it’s ‘out of the money’, which is when the current price of the underlying asset is unfavourable for the buyer. The option would not be exercised, and the trader would lose the premium of £60.
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Short call example
Let’s assume that a trader expects the FTSE 100 index to remain stable, or slightly decline, over the coming month. The trader sells a call option with a strike price at 7,400 points, expiring in one month. The trader receives a premium of £50 for the sale of the option.
One month later when the option expires, the FTSE 100 settles at 7,350 points. In this case, the option buyer will not exercise the contract, meaning the trader, who sold the contract, gets to keep the premium of £50 as profit.
However, if the FTSE 100 settles at expiration above 7,400 points, then the buyer will exercise the contract. If the price is significantly above this level, then the seller can incur large losses. For example, if the FTSE settles at 7,500 points the contract will be exercised and the trader (the seller of the contract) will make a loss of £50.
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Put options explained
A put option provides the holder (buyer) with a right (but not an obligation) to sell an underlying asset at the strike price. For cash-settled options, buyers receive a cash payment if the underlying price is below the strike price, at a specified expiration date and expiration time.
If you’re the writer (seller) of a put option, you have the obligation to buy an underlying asset, or where an option is cash-settled, make a cash payment if the holder exercises the option.
Long put option example
In this example, a trader buys a put option for the FTSE 100 with a strike price of 7,450 points, expiring in one month. The premium for this option is £40.
One month later when the option expires, the FTSE 100 has fallen to 7,350 points. This means that the trade is ‘in the money’ by £100. The net profit – after deducting the premium of £40 – would be £60.
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However, if the trader’s assumptions were wrong and the FTSE 100 rises to 7,550 points, the option will expire out of the money. The trader’s loss will be capped to the option’s premium of £40.
Short put trade example
Let’s assume that a trader expects the FTSE 100 index to remain stable, or slightly increase, over the coming month.
The trader sells a put option with a strike price of 7,500, expiring in one month. The trader receives a premium of £40 for the sale of the option.
One month later when the option expires, the settlement price is 7,520. In this case, the option buyer will not exercise the contact, meaning the trader, who sold the contract, gets to keep the premium of £40 as profit.
However, if the FTSE 100 settles at expiration below 7,500, the buyer will exercise the contract. If the price is significantly below this level, then the seller can incur large losses. For example, if the FTSE falls to 7,400 points, the trader will suffer a loss of £60 (£100 - £40 [premium received]). The loss is partly offset by the premium received when the contract was sold.
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When should you trade call and puts?
Scenario | Implementation |
---|---|
You are expecting rising prices | Long call |
You are expecting falling prices | Long put |
You are expecting stable or slightly decreasing prices | Short call |
You are expecting stable or slightly increasing prices | Short put |
It’s worth noting that options are not an entry-level investment product. They’re a high-risk investment product and your losses can quickly add up in case of losing trades.
Learn how options trading works with us
The risks of trading options
When you trade options, you can’t attach a stop-loss order or take-profit order to your position as you might with a CFD trade or spread bet.
However, if you buy (go long on) a call or put, your maximum risk is predetermined because your potential loss is limited to the price that you paid for the option, known as the ‘premium’.
On the other hand, if you sell (go short on) a call or put, your potential loss is unlimited. Overall, you could lose all the funds you've deposited in your account. For professional clients, losses can exceed deposits.
Buying a call/put | Selling a call/put | |
---|---|---|
Maximum loss | Limited to premium paid | Unlimited |
Maximum profit | Unlimited | Limited to premium received |
Note: when you trade with us, options are denominated in the currency of the underlying instrument rather than your account currency. This mean that forex movements can impact overall profit or loss on a trade.
Learn more about trading options with us
How do options work?
Every option contract has what’s known as an intrinsic value. The intrinsic value is calculated from the difference between the option's strike price and the underlying asset's market price. The more significant this difference is, the more valuable the option. For example, if an index price rises, a call option on that index would gain value.
Increased volatility in the underlying asset can raise the option's price. When the underlying asset has greater price fluctuations, there's a higher chance of significant price moves, potentially making the option more valuable.
Traders can realise profits or losses by closing their positions before expiration. For cash-settled options, there's no acquisition or disposal of a physical asset, so if the option is ‘in-the-money’ at expiration, the holder receives the cash difference.
The price of a cash-settled option can be broken down into intrinsic value and time value (or extrinsic value). Intrinsic value for a call option is how much the underlying market is above the strike price. Time value accounts for the probability of the underlying moving further into the money before expiration. It’s important to bear in mind that an increase in volatility also raises the possibility of an option swinging toward being ‘out- of- the- money’ at expiration.
The two main styles of options available are American-style options and European-style options. American options can be exercised at any time before they expire, whereas European options can only be exercised in a set period just before their expiration date.
Why trade options?
Options can be an effective way to hedge an existing position on an investment. They give you an opportunity to hedge the downside in volatile markets, without giving up on upside potential. Taking out long option positions gives you certainty over your risk, as you know your maximum loss for the position is limited to the premium paid for the contract. However, the maximum loss when selling options is unlimited.
Even if you don’t exercise an existing option, trading them can be beneficial. Buyers may pay a higher premium to secure an attractive strike price, particularly if your call option strike price is currently much lower than market value. If the market value falls, and it’s no longer worthwhile to exercise them, you’ve made a profit from the premium.
How to trade options
- Learn key options terminology
- Option: a contract that gives the buyer the right, but not the obligation, to buy or sell an underlying asset at a specific price on or before a certain date
- Strike price: the price at which the underlying asset can be bought or sold
- Expiration date: the date and time at which the option contract expires
- Premium: the price paid to purchase the option
- Multiplier (contract size): indicates the number of units of the underlying asset that one contract represents, and is usually used for stock index options
- In-the-money (ITM), out-of-the-money (OTM), at-the-money (ATM): refers to the relationship between the option’s current price and the option’s strike price
- Understand the risks
- Option contracts can expire worthless
- There’s potential for significant loss, especially with certain strategies
- Market conditions can be unpredictable
Options Greeks are risk characteristics that measure how changes in certain factors, such as the underlying asset price or volatility, affect an option’s price. It’s important to understand how these factors can influence your options position. Understanding the Greeks can help traders effectively manage their portfolios and hedge against potential losses.
- Research the market you want to trade
Options aren’t solely for stocks. They’re available for a variety of securities, including commodities, indices, and ETFs. It’s important to determine which market aligns with your trading goals and risk tolerance. By narrowing your focus, you can analyse specific sectors, implied volatility, price trends, expiration dates, and trading volumes, to make informed decisions.
- Pick which options to buy or sell
Your prediction about an underlying 'asset's movement guides the type of option you might purchase or sell:
- If you think the underlying asset price is moving up, you might look to buy a call option or sell a put option
- If you think the underlying asset price is stable, you could choose to sell a call option or sell a put option
- If you think the underlying asset price is falling, you might buy a put option or sell a call option.
- Predict the options strike price
For an option to maintain value, the underlying asset price should settle in-the-money by the option’s expiration. Choose a strike price that mirrors where you anticipate the asset will reside for the option's duration.
- Choose a timeframe
Every option has a predefined expiration, dictating the final day it can be exercised. Short-term investors may look to trade options that have a daily or weekly expiration date, while longer-term investors may find an option with a monthly or yearly expiry more suitable.
The longer the time until the option expires, the more time there is for the underlying asset price to move in a direction favourable to you (as the option holder) – bear in mind that the opposite scenario is also possible. As a result, the option is priced higher by the seller.
Longer timeframes offer more chances for your investment strategy to unfold. However, be cautious of time decay, as the value of options diminishes as they approach expiration, especially if they remain out-of-the-money.
- Place your options trade
When you trade options with us, you’ll need to specify:
- Whether you're buying or selling a call or put option
- A strike price
- An expiration date
- The number of contracts you wish to trade – the higher the trade size, the greater the margin required, and therefore the higher the risk
- Any additional order details like limit or market orders
- Monitor your position
Regularly track your option trade, evaluating it against the underlying asset's movement, time decay, and any market events or news that might impact its value. Adjust or exit positions, if necessary, based on your initial strategy and changing market conditions.
What makes a good options trader?
Here are our five top tips for anyone looking to start options trading.
- Don’t use options trading in isolation: options is a high-risk product designed for experienced traders, so you should have experience of trading lower-risk types of investment before trading options. Options can be a very useful product to use in conjunction with lower-risk investments, such as a share portfolio, as they allow you to hedge your portfolio against adverse market movements.
- Understand and stick to your strategy: understand whether you’re hedging against losses or actively pursuing profits from underperforming options before making a purchase.
- Stick to modest trades: a string of losing trades in options trading can quickly turn into significant losses. Avoid overcommitting on each trade to ensure that, if it doesn’t work out in your favour, your loss is only a small percentage of your overall trading funds.
- Diversify as much as possible: As well as diversifying through alternative, lower-risk assets, it could also be sensible to hold a diverse range of options. If you solely invest in technology or NASDAQ indices, you could leave yourself open to losses if the tech sector doesn’t move in your favour. Choosing options from a range of industries and markets can help to balance your risk.
Start trading options
Before you can start trading options, you’ll need to take a short test to make sure you understand how options trading works and the risks involved.
FAQs
Can I buy and trade stock options?
Yes. Options are available on lots of securities, including stocks. We'll offer options based on the following indices initially: UK 100, US SPX 500, US NDAQ 100, Germany 40, France 40 and Euro 50, with more assets to follow.
Can I buy call and put options for the same security?
Yes, and this approach is used by traders with the aim of helping to manage losses and increase profit potential. There are a number of complex options strategies that traders can benefit from, including straddles, strangles and spread options.
What are the fees associated with options trading?
The fees associated with options trading are the bid-ask spread, and any currency conversion fee on realised profit and losses. You can find more information about the costs in our
Cost Disclosure Document.
Try these next
Explore the features and benefits of our options trading product
Get to grips with the Greeks: the key metrics that show how sensitive options are to various market factors.
Learn the essentials of how to value options, including the impact of time, volatility, and the underlying asset.
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