Complex instruments
Our comprehensive home for advanced investments, to help you understand the extra risk and complexity involved.
What are complex financial instruments?
Complex financial instruments are investments with features that can make them riskier and more difficult to understand compared to other investments, such as funds.
These features can also influence an investment’s price and liquidity, potentially making it difficult to sell it when you want, at the price you expect. These extra elements mean they are not suitable for all investors and can lead to increased losses compared to regular investments.
Each complex instrument comes with a unique set of risks and features, and it’s important to understand them. You can learn more by referring to the Key Information Document (KID) or other types of documentation found on an investment’s information page, where available. Please make sure you read this information carefully and fully understand the risks associated before investing.
Risks of complex instruments
The risks and complications associated with a complex instrument will depend on what you’re investing in. Here are just some of the most common:
Lack of liquidity
This makes it difficult to sell an investment and your money can’t be withdrawn easily.
Increased losses & gains
Through the use of leverage, the impact of investment performance is multiplied, meaning potentially greater losses.
Increased counterparty exposure
The involvement of third parties can put you at additional risk if they don’t meet their obligations.
Limited pricing transparency
This can make it more difficult to assess the value of your investments.
Tax considerations
These investments can have subtle details around tax rules which could be misinterpreted.
Additional charges structure
Investments may have a sophisticated structure or complex performance related charges, such as exit charges.
How do I invest in a complex instrument?
Before investing in a complex instrument, you’ll need to complete our assessment, also known as an appropriateness test, to check your experience and knowledge of these investments.
Completing the assessment is required by the UK financial regulator, the Financial Conduct Authority, but it’s also designed to help protect investors from investments that may not be suitable for them.
You’ll need to complete the appropriateness test on a yearly basis to show you still understand the investments and the risks involved.
If you fail the test, you can retake it, but even once completed successfully, it’s important you fully understand what you’re specifically investing in.

Reminder: Complex instruments aren’t suitable for everyone and should only be considered as an option for highly knowledgeable or professional investors. They come with far greater risk than regular investments and their value can go down as well as up.
Examples of complex financial instruments
Here are some examples of investments that fall under the category of complex instruments.
ETPs is a blanket term which includes exchange traded funds (ETFs), exchange traded commodities (ETCs), and exchange traded notes (ETNs). While not all ETPs will be complex instruments, they have the potential to be, because they can sometimes be leveraged products or invest in an area which is not as straightforward as a typical fund.
These instruments are listed on an exchange and trade like shares, which means the price can fluctuate throughout the day. The risks that come along with an ETP will depend on what kind of product it is.
Many ETFs aim to track an index or sector. But there are types of ETF that use complex strategies to try and deliver higher returns than a particular index or sector.
- Leveraged ETFs use complex techniques to try and amplify the actual gains or losses of a particular index.
- Short ETFs use derivatives to try and deliver the inverse performance of a particular index. This means if the performance of that index declined, your investment would go up in value. However, the reverse is also true, meaning you could lose money if the index did well.
Synthetic ETFs don’t hold the underlying assets of an index. They instead enter derivatives, known as swap agreements, with a counterparty to provide a return based on the performance of the underlying assets.
Additional risks: Like with exchange traded commodities (ETCs), there’s the possibility that a counterparty might fail and you lose money as a result. The use of leverage can also result in losses that are more extreme than they would be with the use of a standard ETF. These instruments may not precisely match the performance of the index depending on other fees and agreements. In particular, the daily resets of leveraged ETFs means that the gains and losses are unlikely to compound the same as the underlying assets and, as such, they are designed for short-term trading, rather than buy-and-hold investing.
These are types of exchange-traded products that allow investors to track the performance of a specific commodity or commodity index. Examples of commodities are oil, precious metals, livestock or currencies.
- Physical ETCs are structured as zero-interest debt instruments, collateralised by direct holdings of the commodity itself, via purchase and storage of the underlying asset. They can be sensitive to changes in the underlying commodity prices, movements in the index and/or exchange rate risks.
- Synthetic ETCs are structured as zero-interest debt instruments and use swaps or futures contracts to gain exposure to the price of the commodity. Futures contracts are traded on exchanges and are a standardised legal agreement to buy or sell an asset, at a predetermined price, on a specified future date.
However, because futures have a limited lifespan, the ETC must regularly "roll" its positions by selling expiring contracts and buying new ones. The outcome of this process can affect the ETC's performance.
Additional risks: ETCs, as debt instruments, are exposed to counterparty risk of all parties involved with the contracts. They may also fail to match the exact performance of the commodity or index being tracked. ETCs may also introduce leverage via use of futures contracts or engaging in borrowing to increase exposure to the commodities that can amplify losses as well as gains.
A warrant gives you the right to buy shares or other securities at a specific price, within a particular time frame. The price of warrants can be very volatile, as a small movement in the price of the underlying investment can lead to large change in the price of a warrant. After a warrant expires, it has no value.
Additional risks: If you do not choose to take up the rights under the terms of the warrant, you may not get any returns for holding that warrant. During the time you hold a warrant, there is a chance that a better price will emerge for the underlying security than the one you have agreed upon.
A convertible allows you to exchange an existing investment (usually bonds or preference shares) into a fixed number or proportion of ordinary shares in the same underlying company at a future date. A convertible investment usually pays a lower rate of return than a non-convertible investment and the value of the convertible will be affected significantly by price movements in the underlying investment itself.
Additional risks: Because convertibles often cross between bonds and shares, this means that they are sensitive to the factors of both markets. So, they could be sensitive to elements like interest rates as well as the typical share fluctuation factors.
These include hedge funds, private equity, infrastructure, property or other illiquid asset classes. The investment may have a sophisticated structure and/or complex performance related charging and may have exposure to specialist geographical areas or other security types.
Additional risks: These asset classes have limited levels of liquidity, meaning they cannot be easily sold and converted to cash. Some of the funds may have specified exit periods, where you can only remove your money after a certain number of years, for example. Additionally, because these investments are not all public, there is less transparency when it comes to the value of the assets and reporting.
A structured product offers a pre-packaged investment strategy that uses derivatives to deliver a return (known as a payout) if certain conditions are met. The return could depend on the performance of a single investment, a basket of investments, an index, interest rate(s), commodities, debt, foreign currency or any combination of these. They are typically fixed-term investments with little or no liquidity or ability to trade them before maturity.
Additional risks: Low levels of liquidity mean that it could be difficult to sell the investment and there may be penalties if you sell before the agreed exit date.
Venture capital trusts use tax reliefs to encourage investment in smaller, early-stage companies. Some VCTs may be lower risk than others, but overall, they’re still likely to carry higher risk than investing in more established companies on the stock market. You must hold a VCT for five years to keep the tax relief. You also cannot claim tax relief if you reinvest into a VCT you’ve sold within the last six months.
Additional risks: Although venture capital trusts can offer tax relief, this does not apply once they are initially offered on the market, meaning some of the benefits of the asset are not available if you buy the shares on the secondary market. Like structured products, VCTs can have low levels of liquidity, making them difficult to sell.
If you’re not comfortable or familiar with managing complex investments, don’t worry as there are plenty of other investments available to you. See all our investment options, including funds managed by our experts, individual shares, ETFs, and more.
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