What are ETFs?
Introduction
So, what are ETFs? Exchange-Traded Funds, or ETFs, have rapidly become one of the most popular investment options for retail and professional investors. But what exactly are ETFs, and why are they so widely embraced?
In the UK, ETFs have become valuable for investors seeking a balanced, diversified portfolio that aligns with long-term financial goals. As financial markets become increasingly interconnected, ETFs offer a way for UK investors to access not only domestic markets but also international markets and sectors.
The information provided on this page and throughout the website is for general information purposes only and does not constitute financial advice. It is important that you conduct your own research and consider your own personal circumstances before making any investment decisions.
What is an ETF?
At its core, an Exchange-Traded Fund (ETF) is a pooled investment vehicle that allows multiple investors to collectively own a diversified portfolio of assets. Unlike individual stocks or bonds, an ETF is structured to hold a variety of investments within a single fund, providing exposure to a broader market or specific sector. And because it’s traded on an exchange, just like a stock, you can buy or sell shares of an ETF throughout the trading day, giving it a level of flexibility that many other investment options lack.
ETF structure and composition
Each ETF is composed of multiple assets—typically a mix of stocks, bonds, or commodities—that reflect a particular index or theme. For instance, an ETF tracking the FTSE 100 would hold shares from the largest companies listed on the London Stock Exchange, giving investors exposure to the overall performance of these top UK companies. This structure allows investors to gain diversified exposure without having to buy each underlying asset individually, which would require more capital and effort.
Types of ETFs and their purpose
ETFs come in many varieties, each designed to meet different investment goals:
- Index ETFs – These ETFs track a specific index, such as the FTSE 100, S&P 500, or MSCI Emerging Markets. They aim to replicate the performance of an entire market segment, making them a popular choice for investors seeking broad exposure.
- Sector and Industry ETFs – Target specific sectors, like technology, healthcare, or energy. These ETFs are ideal for investors who want to focus on a particular area of the economy, such as the fast-growing tech sector, without picking individual stocks.|
- Bond ETFs – Composed of various bonds, these ETFs provide exposure to fixed-income assets, such as government or corporate bonds. Bond ETFs can be a way to balance risk in a portfolio, as bonds tend to be more stable compared to stocks.
- Commodity ETFs – Offer direct exposure to physical commodities, like gold, oil, or agricultural products. They’re popular among investors looking to hedge against inflation or diversify away from traditional assets like stocks and bonds.
- Thematic ETFs – These ETFs focus on specific investment themes, like renewable energy, artificial intelligence, or ESG (Environmental, Social, and Governance) criteria. They are particularly appealing to investors interested in trends or sectors that may drive future growth.
By offering a range of investment types within a single fund, ETFs allow investors to build diversified portfolios tailored to their preferences, risk tolerance, and financial goals. This versatility is one of the reasons why ETFs have become a go-to tool for both seasoned and new investors.
How Do ETFs Work?
Understanding how ETFs function involves looking at their unique creation and redemption process—the mechanism that keeps prices closely aligned with the value of their underlying assets. Unlike mutual funds, where investors buy and sell shares directly from the fund, ETFs operate on an “open-ended” structure that allows shares to be created or redeemed as demand changes.
Here’s how it works:
When there’s high demand for a particular ETF, authorized participants (usually large financial institutions) create additional shares of it. They do this by purchasing the underlying assets (like stocks or bonds) and exchanging them for new shares, which are then sold to the public. When demand decreases, authorized participants redeem ETF shares by exchanging them for the underlying assets, reducing the number of shares in circulation.
This creation and redemption process helps to keep the market price aligned with the net asset value (NAV) of its holdings, preventing significant price deviations.
The Role of Market Makers
Market makers play a vital role in maintaining this price alignment. Market makers (such as broker firms) are financial professionals or institutions that facilitate buying and selling of ETFs by continuously providing buy and sell orders. By doing so, they help stabilize the price, ensuring it closely reflects the NAV of its underlying assets. If the ETF price deviates from the NAV, market makers step in to buy or sell shares, taking advantage of any price differences and thereby restoring the balance. This function is crucial for maintaining liquidity and efficiency.
Some ETFs yield dividends
Dividends are managed in two main ways:
Distributing Dividends
Certain ETFs pay dividends directly to investors. These dividends are typically paid out in cash and deposited into the investor’s account on the payment date. This allows investors to use the dividends as they see fit.
Automatically Reinvesting Dividends
Other ETFs reinvest dividends on behalf of investors. Rather than paying them out, these dividends are used to purchase additional units (or fractions of units) of the ETF, which can help the investment grow through compounding over time.
The specific approach an ETF takes depends on its structure, and you can find details in the fund’s prospectus or Key Investor Information Document (KIID).
Trading ETFs Like Stocks
One of the major advantages is that they trade on exchanges, allowing investors to buy and sell them just like individual stocks.
Unlike mutual funds, which only trade once per day after the market closes, ETFs can be traded at any time during market hours. This flexibility allows investors to react quickly to market changes, implement intraday trading strategies, or buy/sell based on real-time prices. Additionally, they often have lower expense ratios than mutual funds, making them an appealing option for cost-conscious investors.
In summary, the ETF creation and redemption process, combined with the activity of market makers, helps keep prices aligned with the value of their underlying assets. This structure not only ensures price stability but also makes them highly accessible, allowing investors to enter and exit positions seamlessly throughout the trading day. It’s this blend of flexibility, transparency, and liquidity that has contributed to the growing popularity of ETFs in markets around the world.
The Benefits of Investing in ETFs
They have become a cornerstone of modern investing and with good reason. By offering a range of benefits that appeal to both beginner and experienced investors, they are an attractive choice for those looking to build diversified, cost-effective portfolios.
Let’s take a closer look at the primary advantages of investing in ETFs.
“ETFs democratize investing by making it easy and affordable to access a diversified portfolio.”
Larry Fink
CEO of BlackRock
Diversification
One of the biggest appeals is their built-in diversification. When you invest in an ETF, you’re buying a fund that holds multiple assets—often hundreds or even thousands—spanning different sectors, industries, or asset classes. This diversification spreads your risk across many holdings, reducing the impact of any single stock or asset performing poorly. Whether you’re looking to invest in a broad index like the FTSE 100 or a specific sector such as technology, ETFs offer a simple way to gain exposure to entire markets or industries.
Cost-effectiveness
Known for their cost efficiency, they often boast lower fees than mutual funds or actively managed funds. Since many ETFs are passively managed—meaning they simply track an index rather than relying on a team of managers to select stocks—the expenses are generally lower. For UK investors, popular providers like Vanguard, iShares, and Invesco offer a variety of funds with competitive expense ratios, which can make a significant difference to your returns over time.
Liquidity and flexibility
Because ETFs trade on exchanges like individual stocks, they provide liquidity and flexibility that traditional funds lack. Investors can buy or sell shares at any time during the trading day, giving them control over the timing and pricing of their trades. This is particularly advantageous for those who may want to take advantage of intraday price movements or have access to immediate liquidity.
Transparency
Another key benefit of ETFs is their transparency. They disclose their holdings regularly, often on a daily basis, allowing investors to see exactly what assets they own within the fund. This level of transparency makes it easier for investors to understand and track their portfolios, as they know exactly which assets are influencing performance.
Accessibility for UK investors
In the UK, they are widely accessible and offered by reputable providers such as Vanguard, eToro, Trading 212 and InvestEngine. These providers offer a range of options that cater to various investing goals and risk tolerances, from broad market indices to more targeted sectors. With these providers, UK investors can easily build diversified portfolios that align with their long-term financial plans, whether they’re looking to invest in UK equities, global markets, or even specific themes like clean energy.
In summary, ETFs combine diversification, low costs, liquidity, transparency, and accessibility—all essential elements for a balanced and effective investment strategy. With these benefits, they have become a preferred choice for UK investors seeking to build a robust portfolio tailored to their individual goals and risk preferences.
Types of ETFs to Consider
These instruments come in many varieties, each designed to meet different investing goals and preferences. Choosing the right type of ETF can help you build a portfolio that aligns with your objectives, whether you’re looking for broad market exposure, sector-specific investments, or a focus on fixed-income assets.
Here’s a breakdown of the main types of ETFs and how they might fit into a diversified portfolio.
Index ETFs
Index ETFs are among the most popular types, as they track well-known market indexes like the FTSE 100, S&P 500, or MSCI Emerging Markets. They offer investors broad market exposure, making them a foundational choice for those seeking diversified, long-term growth. An index ETF is often ideal as a core holding in a portfolio, providing a stable base that captures the performance of entire markets.
Sector and Industry ETFs
They allow you to target specific segments of the economy, such as technology, healthcare, or energy. If you have a particular interest in a high-growth sector—say, technology—these ETFs can provide concentrated exposure to that area. Sector ETFs are well-suited for investors looking to add a bit more weight to specific industries, balancing out broader holdings with a focus on areas they believe will perform well.
Bond ETFs
Bond ETFs focus on fixed-income assets, such as government or corporate bonds, and are ideal for investors seeking income and stability. These ETFs are often used to reduce portfolio risk, as bonds tend to be less volatile than equities. Adding a bond ETF can help smooth out returns and offer a regular income stream, which is especially useful for conservative investors or those approaching retirement.
Commodity ETFs
For those looking to diversify beyond traditional stocks and bonds, they provide access to physical assets like gold, silver, or oil. Commodity ETFs can act as a hedge against inflation or market volatility, as these assets often move independently of the stock market. Gold ETFs, in particular, are popular for their perceived stability during economic downturns, making them a defensive addition to a portfolio.
Thematic ETFs
Are designed around specific investment themes or trends, such as renewable energy, artificial intelligence, or environmental, social, and governance (ESG) factors. These ETFs appeal to investors who want to align their portfolios with future-forward trends or personal values. While they may be riskier due to their narrower focus, they can offer high growth potential for those with a higher risk tolerance.
Each of these have their place in a diversified portfolio, depending on your goals and risk tolerance.
For many investors, a core and satellite approach works well: using a broad index ETF as the stable core, while adding sector, bond, commodity, or thematic ETFs as “satellite” holdings to enhance growth, income, or risk management.
By mixing and matching types, you can build a balanced portfolio that aligns with both your financial ambitions and market outlook.
ETFs vs. Mutual funds - Key Differences
When deciding between these two, knowing the core differences can help you make the right choice.
Trading Flexibility
- ETFs: Trade like stocks, meaning you can buy or sell them throughout the day.
- Mutual Funds: Only trade once per day, after the market closes.
Fees
- ETFs: Generally lower expense ratios since most are passively managed.
- Mutual Funds: Often have higher fees, especially if actively managed.
Transparency and Tax Efficiency
- ETFs: Offer daily transparency of holdings and are generally more tax-efficient due to the in-kind redemption process.
- Mutual Funds: Typically disclose holdings quarterly and may pass on capital gains taxes to investors.
When to Choose an ETF Over a Mutual Fund
- Choose ETFs if: You want flexibility, low costs, and transparency. Ideal for hands-on, cost-conscious investors.
- Consider Mutual Funds if: You prefer an actively managed fund and are willing to pay higher fees for professional management.
In summary, ETFs are often the go-to for UK investors seeking a cost-effective, flexible, and transparent investment option.
The information provided on this page and throughout the website is for general information purposes only and does not constitute financial advice. It is important that you conduct your own research and consider your own personal circumstances before making any investment decisions.
Potential Risks of Investing in ETFs
While ETFs offer many benefits, they come with risks investors should be aware of:
- Liquidity Risk
Certain ETFs, especially those focusing on niche or less popular markets, may have low trading volumes. This can make buying or selling shares quickly more difficult, especially in turbulent markets. - Market Risk
ETFs are subject to market volatility, meaning they can lose value during downturns just like individual stocks. - Tracking Error
They are designed to mirror their underlying index, but slight mismatches, or tracking errors, can occur, causing the ETF’s performance to diverge slightly from the index it tracks. - Currency Risk for UK Investors
When investing in ETFs holding assets in foreign currencies, fluctuations in exchange rates can impact returns, potentially reducing gains or amplifying losses.
While they can be versatile tools for portfolio diversification, it’s essential to consider these risks and ensure that they align with your investment goals and risk tolerance.
How to Start Investing in ETFs in the UK
Starting with ETFs is straightforward, and a bit of planning can help you make the most of your investments.
First, it’s essential to research and select the right ETF. Look at factors such as the fund’s objectives, fees, past performance, and holdings to ensure they align with your investment goals.
For example, if you’re looking for broad exposure to the UK market, an ETF tracking the FTSE 100 might be a solid choice, whereas investors seeking growth sectors might prefer thematic or technology-focused ETFs.
Here’s a quick step-by-step guide to get started:
Research and Select an ETF
Evaluate ETFs based on your financial goals, fees, and track record.
Choose a Platform
Check out our broker review page for a selection of UK brokers with ETF offerings.
Define Investment Goals and Risk Tolerance
Know what you’re aiming for - whether it’s steady growth or sector-specific gains.
Consider a Core and Satellite Strategy
Use broad ETFs as core holdings and add sector or thematic ETFs as satellite investments for targeted growth.
Choosing a reliable investment platform is crucial. Many UK brokers offer a variety of ETFs, so find one that suits your preferences for fees, user experience, and available assets.
Our broker review page provides a comprehensive list of top platform options for UK investors.
One popular strategy for beginners is the core and satellite approach: using a broad market ETF as the core of your portfolio, while adding smaller, more specific ETFs (such as technology or renewable energy funds) as satellite holdings. This balances diversification with targeted growth, offering a well-rounded investment mix.
Here's where you can check out our reviewed brokers!
With the right preparation, investing in ETFs can be a straightforward way to build a diversified portfolio tailored to your needs.
Conclusion
ETFs offer a flexible, accessible, and diversified way to invest, providing exposure to various sectors, asset types, and markets within a single fund. Their cost-effectiveness and ease of trading make them an appealing option for both seasoned and new investors looking to build wealth over the long term.
However, understanding your financial goals and risk tolerance is crucial when choosing the right ones. Whether you’re aiming for steady growth, sector-specific exposure, or a balanced approach, aligning your investments with your objectives will help you make informed decisions that suit your personal strategy.
ETFs are a valuable tool for building a well-rounded, long-term portfolio. With the right research and platform, UK investors can use them to achieve broad diversification and tailored growth, bringing financial goals within reach.