US Dollar Index

The US dollar index is a measure of the value of the United States dollar, used by traders, investors, and economists. In this guide, we explain its composition today, calculation, trading economics, and historical performance. We also explain how to trade the US dollar index with a list of the top brokers and platforms in 2024.

US Dollar Index Brokers

  1. rating empty
    rating full

    AvaTrade is a leading forex and CFD broker, established in 2006 and regulated across 9 jurisdictions. Over 400,000 users have signed up with the broker which processes over 2 million trades each month. The firm offers multiple trading platforms, including MT4, MT5, and a proprietary WebTrader. 1250+ financial instruments are available for trading, alongside a comprehensive education center and multilingual customer support.

  2. rating empty
    rating full

    Established in 1989, CMC Markets is a respected broker listed on the London Stock Exchange and authorized by several tier-one regulators, including the FCA, ASIC and CIRO. More than 1 million traders from around the world have signed up with the multi-award winning brokerage.

  3. rating empty
    rating full

    Eightcap is an award-winning, FCA-regulated broker offering industry-low trading fees. They are also the highest-rated brand by TradingView’s 50 million-strong users, who can trade directly on the platform. UK traders can sign up for a live account with an accessible £100 minimum deposit.

  4. rating empty
    rating full

    Established in Australia in 2010, Pepperstone is a top-rated forex and CFD broker with over 400,000 clients worldwide. It offers access to 1,300+ instruments on leading platforms MT4, MT5, cTrader and TradingView, maintaining low, transparent fees. Pepperstone is also regulated by trusted authorities like the FCA, ASIC, and CySEC, ensuring a secure environment for traders at all levels.

  5. XM

    rating empty
    rating full

    XM is a globally recognized forex and CFD broker with 10+ million clients in 190+ countries. Since 2009, this trusted broker has been known for its low fees on 1000+ instruments. XM is regulated by multiple financial bodies, including the ASIC and CySEC.

  6. rating empty
    rating full

    City Index is an established and award-winning forex, CFD and spread betting broker with top-tier global regulation, including in the UK (FCA) and Australia (ASIC). With 30+ years in the industry, 13,500+ instruments and 24/5 customer support, City Index is a solid pick for aspiring traders.

  7. rating empty
    rating full

    DNA Markets is a forex and CFD broker established in 2020. The broker operates two entities in Australia and the offshore jurisdiction, St Vincent and the Grenadines. Traders can access 250+ markets, with a Standard account for beginners and a Raw account for experienced traders. The reliable MetaTrader 4 and MetaTrader 5 platforms are available, alongside Signal Start.

  8. rating empty
    rating full

    eToro is a top-rated multi-asset platform which offers trading services in thousands of CFDs, stocks and cryptoassets. Launched in 2007, the brand has millions of active traders globally and is authorized by tier one regulators, including the FCA and CySEC. The brand is particularly popular for its comprehensive social trading platform. Cryptoasset investing is highly volatile and unregulated in the UK and some EU countries. No consumer protection. Tax on profits may apply. 76% of retail CFD accounts lose money.

  9. rating empty
    rating full

    InstaForex is a forex and CFD broker founded in 2007. The broker offers diverse market coverage to over 7 million clients, spanning traditional assets like currencies and shares, as well as other interesting opportunities such as IPOs. Traders can also access copy trading services, PAMM accounts and investment opportunities. InstaForex is regulated by the BVI FSC.

  10. rating empty
    rating full

    Founded in 2009, Vantage offers trading on 1000+ short-term CFD products to over 900,000 clients. You can trade Forex CFDs from 0.0 pips on the RAW account through TradingView, MT4 or MT5. Vantage is ASIC-regulated and client funds are segregated. Copy traders will also appreciate the range of social trading tools.

  11. rating empty
    rating full

    Founded in 2006, FxPro is an established forex, CFD and spread betting broker offering 2100+ assets to over 2 million clients worldwide. The broker is regulated in 4 jurisdictions and offers reliable 24/5 customer support, earning it a high trust and safety score. FxPro has also picked up more than 100 industry accolades for its competitive trading conditions, including fast execution and deep liquidity.

  12. rating empty
    rating full

    Founded in 1974, IG is part of IG Group Holdings Plc, a publicly traded (LSE: IGG) brokerage. The brand offers spread betting, CFD and forex trading across an almost unrivalled selection of 17,000+ markets, with a range of user-friendly platforms and investing apps. For 50 years, IG has maintained its position as an industry leader, excelling in all key areas for traders.

  13. rating empty
    rating full

    FXTM is a top-rated forex and CFD broker established in 2011 and operating across 4 continents. The company is secure and regulated by leading authorities, including the FCA and CySEC. Offering 1000+ trading markets and three account types, they cater to all levels of trader.

  14. rating empty
    rating full

    FP Markets is an ASIC- and CySEC-regulated broker that offers forex and CFD trading on a broad range of assets through the MT4, MT5 and IRESS platforms. With trading available through standard and raw spread accounts on thousands of international stocks, forex, indices, commodities, cryptocurrencies, bonds and ETFs, this broker has some of the most comprehensive market coverage available. FP Markets also offers a full range of additional features, including educational resources and access to powerful software such as Autochartist.

  15. rating empty
    rating full

    Libertex is a well-known broker, established in 2012. The regulated brand has served numerous clients and is regulated by the Cyprus Securities and Exchange Commission with license number 164/12. Libertex offers CFD trading on 250+ underlying assets, including through an innovative and user-friendly proprietary web trader platform. Choose between CFDs on forex, cryptocurrencies, commodities, stocks, indices and ETFs, which are available with tight spreads and low commissions.

  16. rating empty
    rating full

    Admirals is an FCA- and ASIC-regulated broker with an excellent range of leveraged instruments, including forex, stocks, indices, ETFs, commodities, cryptos and more. The broker supports the MetaTrader 4, MetaTrader 5 and TradingCentral platforms. With both spread betting and CFDs available and thousands of instruments, this broker provides more flexibility than most rivals.

  17. rating empty
    rating full

    Infinox is a UK-based and FCA-regulated broker that offers diverse trading products thanks to its STP and ECN account types and support for MetaTrader 4, MetaTrader 5 and a proprietary platform. Clients can also benefit from a free VPS that can support automated strategies and a social trading platform, catering to both beginner and seasoned traders.

  18. rating empty
    rating full

    OspreyFX is an ECN broker headquartered in St. Vincent and the Grenadines. Established in 2019, the firm offers 120+ forex and CFD assets with high leverage up to 1:500, tight spreads from 0.1 pips and round-the-clock customer support. OspreyFX also stands out for its funded trading accounts where traders can keep up to 70% of profits.

  19. rating empty
    rating full

    Trading 212 is a European and UK-regulated CFD broker that also offers stock investing and ISAs. It’s best known for its commission-free trading model and beginner-friendly app, which has helped it attract 2.5 million users and £3.5 billion in client assets.

What Does The US Dollar Index Represent?

The US dollar index is a live measure of the US dollar relative to a basket of other major currencies, including the British pound, euro, Japanese yen, Canadian dollar, Swedish krona, and Swiss franc.

The index is computed using a weighted average of exchange rates between the US dollar and these other currencies.

It was first introduced in 1973 by the New York Board of Trade and measures the strength or weakness of the US dollar in global currency markets.

The US dollar index is also sometimes referred to as USDX or DXY, which is its ticker symbol on trading platforms.

How Does The US Dollar Index Work?

The US dollar index is calculated using a weighted geometric mean of the exchange rates between the US dollar and six major currencies. The weightings are based on the relative importance of each currency in US trade.

The index measures the value of the US dollar against a basket of currencies, rather than against any single currency because it’s a more accurate and stable measure of the currency’s value. This means fluctuations in the value of one currency may be offset by movements in the other currencies in the basket. This helps to reduce the impact of volatility in any one currency on the overall value of the index.

To calculate the US dollar index, each currency’s exchange rate is first converted into an equivalent percentage value relative to the US dollar. For example, if the exchange rate for the euro is 1.2 dollars, the percentage value would be 83.33 (1 divided by 1.2, multiplied by 100). These percentage values are then multiplied by their respective weightings, and the resulting values are summed up to create the index value.

The US dollar index is calculated in real-time throughout the trading day and is widely used by traders, investors, and policymakers to monitor the strength of the US dollar. A higher index value indicates that the US dollar is stronger relative to the basket of currencies, while a lower one indicates it’s weaker.

Note, brokers may have their own components and respective weightings in the US dollar index, such as CMC Markets below. These will be detailed in the product specifications.

US Dollar Index Constituents at CMC Markets

CMC Markets US Dollar Index Components

Background Explained

The US dollar index dates back to 1973 when the US government officially ended the gold standard and allowed the US dollar to float freely. Before this, there was a fixed relationship between the US dollar index and the price of gold.

The New York Board of Trade (now part of the Intercontinental Exchange) introduced the US dollar index in March 1973 and it was set at a base level of 100, calculated using the currencies of the US’s major trading partners at the time.

The composition of the spot index has changed to reflect shifts in global trade patterns. In 1999, the euro was added as a component currency, and in 2000, the Deutsche mark was replaced by the euro as Germany’s official currency. In 2018, the Chinese yuan was added to the index as a sixth currency.

The price of the US dollar index has fluctuated over its history, reflecting changes in global economic conditions and monetary policy. The index reached a peak of 164.72 in February 1985, due to high US interest rates and strong economic growth, and a low of 71.33 in March 2008, at the height of the global financial crisis.

Live Chart

What Moves The US Dollar Index?

  • Interest rates: Higher interest rates generally lead to an increase in demand for US dollars. When interest rates in the US rise, it becomes more attractive for foreign investors to hold US dollar-denominated assets such as bonds, stocks, and real estate. The US dollar rises as a result.
  • Inflation: Higher inflation can decrease demand for US dollars, as it reduces the purchasing power of the currency. In addition, high inflation rates can lead to concerns about the stability of the economy, which can cause investors to sell off US dollar-denominated assets and seek safer investments in other currencies. This can contribute to a decline in the value of the US dollar. Note, the best brokers show the US dollar index adjusted for inflation.
  • Economic growth: Stronger economic growth in the US can lead to an increase in demand for US dollars, as investors seek to invest in growing markets. This increase in demand for US assets can lead to an increase in demand for US dollars, which can cause the value of the US dollar index to appreciate relative to other currencies.
  • Geopolitical events: Political or economic instability in other parts of the world can lead to an increase in demand for US dollars as a safe haven currency. In times of geopolitical instability, investors often become more risk-averse and may look to shift their investments to safer assets, such as those denominated in US dollars. This increase in demand for US assets can lead to an increase in demand for US dollars, which can cause the value of the US dollar index to appreciate.
  • Trade balances: A trade deficit can put downward pressure on the US dollar, as it suggests a greater supply of US dollars in global currency markets. As a result, the value of the US dollar index may decline.
  • Central bank policy: Actions taken by the Federal Reserve, such as changes in interest rates or the implementation of quantitative easing, can have a significant impact on the value of the US dollar index.

Trading The US Dollar Index

The US dollar index can be traded through various vehicles at the top brokers, including CFDs, futures, options, and ETFs.

To start trading the US dollar index at online brokers:

  1. Choose a broker: You will need to find a trading broker that allows you to trade the US dollar index. Among the most popular US dollar index brokers in the UK is Pepperstone, an FCA-regulated firm that offers average spreads of 6 pips on the USDX alongside 1:5 leverage.
  2. Analyse market conditions: Before making a trade, analyse current market conditions and any factors that may impact the price of the US dollar index, such as tracking economic indicators, monitoring central bank policy, or assessing geopolitical events. The top US dollar index brokers offer interactive daily, weekly, monthly and long-term 20+ years charts with historical data and news streams that provide insights to help with forecasts and predictions today.
  3. Place a trade: The top US dollar index brokers offer trading from charts and graphs on popular platforms like MetaTrader 4. Traders can set stop loss and take profit orders to limit their risk exposure.

Note, the US dollar index is not regulated in the same way as individual stocks or other securities. However, futures contracts that are used to trade the US dollar index are regulated by the Commodity Futures Trading Commission (CFTC) in the United States. The CFTC is responsible for regulating the futures and options markets, including setting rules designed to protect investors and maintain the integrity of the markets and its prices.

UK traders should also sign up with FCA-regulated brokers for additional peace of mind. This should mean sensible restrictions on retail leverage, negative balance protection, plus access to compensation should the brokerage go bankrupt.

Benefits Of US Dollar Index Trading

Pros of investing through US dollar index brokers include:

  • Liquidity: The US dollar index is widely traded and highly liquid, meaning that it can be bought and sold quickly and easily, and at a relatively low cost.
  • Transparency: The US dollar index is calculated and published in real-time, making it easy for investors to monitor and analyse market trends.
  • Accessible: Trading the US dollar index can be done through various financial instruments, including CFDs, ETFs, futures, and options, making it accessible to a range of UK investors.
  • Diversification: The US dollar index provides exposure to a basket of currencies, which can help diversify investment portfolios.
  • Trading hours: Retail investors can speculate on the US dollar index throughout the standard week at the best brokers. CMC Markets, for example, offers US dollar index trading from 00:00 – 22:00 GMT, Monday to Friday. The USDX can also be traded through futures contracts on the Intercontinental Exchange (ICE) exchange. The trading hours for the US dollar index futures symbol on ICE are  Sunday: 6:00 PM ET to 5:00 PM ET Monday, Monday – Thursday: 6:00 PM ET to 5:00 PM ET the following day, Friday: 6:00 PM ET to 5:00 PM ET Sunday.

Risks Of US Dollar Index Trading

Cons of online trading at US dollar index brokers include:

  • High volatility: The US dollar index can be highly volatile to economic or geopolitical events, leading to unexpected price movements.
  • Technical analysis challenges: Using past market data to predict future price movements can be challenging with the US dollar index due to the complex nature of the basket of currencies it tracks.
  • Economic factors: The US dollar index is heavily influenced by economic factors, such as interest rates and inflation, which can be difficult to predict and analyse accurately.
  • Geopolitical risks: Political or geopolitical events impact the US dollar index, making it difficult to anticipate and respond to sudden changes in the market.
  • Margin requirements: Trading the US dollar index through derivatives often require traders to post margin, which can increase the risk of large losses.

Bottom Line On The US Dollar Index

The US dollar index is widely followed and is often used as a benchmark for measuring the strength of the US dollar. Traders should consider their financial goals and risk tolerance before investing, and stay informed of economic and geopolitical events that could impact the value of the USDX.

See our list of top-rated US dollar index brokers to start trading.


What Does The US Dollar Index Mean?

The US dollar index measures the value of the US dollar relative to a basket of six other major currencies: the euro, Japanese yen, British pound, Canadian dollar, Swedish krona, and Swiss franc. When it rises, the US dollar is increasing in value vs the other currencies, while the opposite is true if its value falls.

How Is The US Dollar Index Calculated?

The US dollar index is calculated as a weighted geometric average of the exchange rates between the US dollar and the other currencies in the basket, with each currency assigned a specific weight based on its importance in international trade. The euro has the greatest weighting given its role as a key trading partner.

What Factors Influence The US Dollar Index?

The US dollar index is influenced by a variety of economic and political, including interest rates, inflation, trade balances, government policies, and global events such as natural disasters. Geopolitical uncertainty in Europe, for example, may weaken the value of the euro which in turn would strengthen the US dollar index.

See our guide to understanding the US dollar index for definitions explained, daily currency index charts, historical prices, factors affecting the USDX, latest bullish updates, and more.

How Can You Trade The US Dollar Index?

Investors can trade the US dollar index through various financial instruments, including buying and selling CFDs, ETFs, futures, options, and mutual funds.

For instance, investors could short the US dollar index through inverse ETFs with 2x or 3x leverage. Alternatively, some of best UK brokers with access to the US dollar index, such as Pepperstone, offer CFDs on the instrument with spreads from 6 pips and a minimum contract size of 100.

Why Is The Dollar Index Important?

The US dollar index enables traders to monitor the value of the USD against the currencies of major trading partners. It also provides an opportunity to hedge against risks associated with the dollar through futures, for instance.

How Much Is The Dollar Index Today?

See the live chart in our guide for the US dollar index latest prices and quotes today.

Why Is The US Dollar Index Rising?

The US dollar index may start rising or falling for a variety of reasons. If an event strengthens the value of the US dollar relative to other currencies in its basket then the index may rise. In contrast, if the value of a component currency, such as the Japanese yen, rises then it may have a negative impact on the index.