United Kingdom's main stock market index, the GB100, fell to 9636 points on October 27, 2025, losing 0.10% from the previous session. Over the past month, the index has climbed 3.62% and is up 16.30% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from United Kingdom. United Kingdom Stock Market Index (GB100) - values, historical data, forecasts and news - updated on October of 2025.

Between the first quarter of 2007 and the fourth quarter of 2024, the lowest market capitalization of all companies listed on the London Stock Exchange (LSE) was recorded in the first quarter of 2009, at *** trillion British pounds. As of the fourth quarter of 2024, the market capitalization of the entire LSE amounted to *** trillion British pounds. Although the value of companies trading has fluctuated and increased overall, a downward trend can be seen in the number of companies listed on the LSE.

As of January 29, 2025, the FTSE index stood at 8,557.81 points - well above its average value of around 7,500 points in the past few years.On the 12th of March 2020, amid the escalating crisis surrounding the coronavirus and fears of a global recession, the FTSE 100 suffered the second largest one day crash in its history and the biggest since the 1987 market crash. On the 23rd of March, the FTSE index saw its lowest value this year to date at 4,993.89 but has since began a tentative recovery. With the continuation of the pandemic, the FTSE 100 index was making a tentative recovery between late March 2020 and early June 2020. Since then the FSTE 100 index had plateaued towards the end of July, before starting a tentative upward trend in November. FTSE 100 The Financial Times Stock Exchange 100 Index, otherwise known as the FTSE 100 Index is a share index of the 100 largest companies trading on the London Stock Exchange in terms of market capitalization. At the end of March 2024, the largest company trading on the LSE was Shell. The largest ever initial public offering (IPO) on the LSE was Glencore International plc. European stock exchanges While nearly every country in Europe has a stock exchange, only five are considered major, and have a market capital of over one trillion U.S dollars. European stock exchanges make up two of the top ten major stock markets in the world. Europe’s biggest stock exchange is the Euronext which combines seven markets based in Belgium, France, England, Ireland, the Netherlands, Norway, and Portugal.

The FTSE All-Share Index shed around one quarter of its value between December 2019 and March 2020, largely due to the coronavirus (COVID-19) pandemic, but likely also influenced by the uncertainty around Brexit at the time. Since then, it has recovered and reached its peak of over 4,750 points at the end of February 2025.The FTSE All-Share Index is the aggregation of the FTSE 100, FTSE 250 FTSE Small Cap indexes, and represents around 98-99 percent of the total UK market capitalization. Since December 29, 2017 the index has been comprised of the 641 largest U.K. companies by market capitalization on the London Stock Exchange.

United Kingdom UK: Market Capitalization: Listed Domestic Companies: % of GDP data was reported at 64.629 % in 2008. This records a decrease from the previous number of 125.114 % for 2007. United Kingdom UK: Market Capitalization: Listed Domestic Companies: % of GDP data is updated yearly, averaging 87.239 % from Dec 1975 (Median) to 2008, with 34 observations. The data reached an all-time high of 177.400 % in 1999 and a record low of 6.368 % in 1980. United Kingdom UK: Market Capitalization: Listed Domestic Companies: % of GDP data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s United Kingdom – Table UK.World Bank.WDI: Financial Sector. Market capitalization (also known as market value) is the share price times the number of shares outstanding (including their several classes) for listed domestic companies. Investment funds, unit trusts, and companies whose only business goal is to hold shares of other listed companies are excluded. Data are end of year values.; ; World Federation of Exchanges database.; Weighted average; Stock market data were previously sourced from Standard & Poor's until they discontinued their 'Global Stock Markets Factbook' and database in April 2013. Time series have been replaced in December 2015 with data from the World Federation of Exchanges and may differ from the previous S&P definitions and methodology.

Key information about United Kingdom Market Capitalization

• United Kingdom Market Capitalization accounted for 3,182.091 USD bn in Feb 2025, compared with a percentage of 3,120.628 USD bn in the previous month
• UK Market Capitalization is updated monthly, available from Apr 1999 to Feb 2025
• The data reached an all-time high of 4,211.587 USD bn in Oct 2007 and a record low of 1,402.869 USD bn in Sep 2002

CEIC converts monthly Market Capitalization into USD. London Stock Exchange provides Market Capitalization in local currency. The Federal Reserve Board period end market exchange rate is used for currency conversions. Market capitalization includes only domestically listed companies. As of 2017, definitions from the revised Markets in Financial Instruments Directive (MiFID II) have been introduced.

United Kingdom Market Capitalisation: UK Main Market: Total data was reported at 2,499,251.385 GBP mn in Mar 2025. This records a decrease from the previous number of 2,527,274.100 GBP mn for Feb 2025. United Kingdom Market Capitalisation: UK Main Market: Total data is updated monthly, averaging 2,256,749.813 GBP mn from Feb 2017 (Median) to Mar 2025, with 98 observations. The data reached an all-time high of 2,527,274.100 GBP mn in Feb 2025 and a record low of 1,618,175.400 GBP mn in Oct 2020. United Kingdom Market Capitalisation: UK Main Market: Total data remains active status in CEIC and is reported by London Stock Exchange. The data is categorized under Global Database’s United Kingdom – Table UK.Z004: London Stock Exchange: Market Capitalisation: Main Market.

Key information about United Kingdom Market Capitalization: % of GDP

• United Kingdom Market Capitalization accounted for 83.8 % of its Nominal GDP in Dec 2024, compared with a percentage of 70.5 % in the previous year
• UK Market Capitalization: % Nominal GDP is updated yearly, available from Dec 1999 to Dec 2024
• The data reached an all-time high of 131.2 % in Dec 2006 and a record low of 70.5 % in Dec 2023

CEIC calculates annual Market Capitalization as % of Nominal GDP from monthly Market Capitalization and quarterly Nominal GDP. London Stock Exchange provides Market Capitalization in local currency. The Office for National Statistics provides Nominal GDP in local currency. As of 2017, definitions from the revised Markets in Financial Instruments Directive (MiFID II) have been introduced. Market Capitalization includes domestically listed companies only.


Further information about United Kingdom Market Capitalization: % of GDP

• In the latest reports, FTSE All-Share recorded a daily P/E ratio of 14.4 in Jul 2022
• FTSE 100 closed at 8,674.0 points in Jan 2025

Prices for United Kingdom Stock Market Index (GB100) including live quotes, historical charts and news. United Kingdom Stock Market Index (GB100) was last updated by Trading Economics this October 27 of 2025.

UK Gas fell to 78.60 GBp/thm on October 27, 2025, down 2.37% from the previous day. Over the past month, UK Gas's price has fallen 6.23%, and is down 26.29% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks the benchmark market for this commodity. UK Natural Gas - values, historical data, forecasts and news - updated on October of 2025.

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Securities Exchanges Market Size 2025-2029

The securities exchanges market size is forecast to increase by USD 56.67 billion at a CAGR of 12.5% between 2024 and 2029.

The market is experiencing significant growth, driven by the increasing demand for investment opportunities. This trend is fueled by a global economic recovery and a rising interest in various asset classes, particularly in emerging markets. Another key driver is the increasing focus on sustainable and environmental, social, and governance (ESG) investing. This shift reflects a growing awareness of the importance of long-term value creation and the role of exchanges in facilitating socially responsible investments. This trend is driven by the expanding securities business units, including stocks, bonds, mutual funds, and other securities, which cater to the needs of investment firms and individual investors. However, the market is not without challenges. Increasing market volatility poses a significant risk for exchanges and their clients.
Furthermore, the rapid digitization of trading and the emergence of alternative trading platforms are disrupting traditional exchange business models. To navigate these challenges, exchanges must adapt by investing in technology, expanding their product offerings, and building strong regulatory frameworks. Data analytics and big data are also crucial tools for e-brokerage firms to gain insights and make informed decisions. By doing so, they can capitalize on the market's growth potential and maintain their competitive edge. Geopolitical tensions, economic instability, and regulatory changes can all contribute to market fluctuations and uncertainty.

What will be the Size of the Securities Exchanges Market during the forecast period?

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In the dynamic market, financial instrument classification plays a crucial role in facilitating efficient trade matching through advanced execution quality metrics and order book liquidity. Quantitative trading models leverage options clearing corporation data to optimize portfolio holdings, while trade matching engines utilize high-speed data storage solutions and portfolio optimization algorithms to minimize latency and enhance market depth indicators. Data center infrastructure and network bandwidth capacity are essential components for supporting complex algorithmic trading strategies, including latency reduction and price volatility forecasting. Market impact measurement and risk assessment methodologies are integral to managing market impact and mitigating fraud, ensuring regulatory compliance through transaction reporting standards and regulatory compliance software.

Exchange traded funds (ETFs) have gained popularity, necessitating robust quote dissemination systems and trade surveillance analytics. Server virtualization and cybersecurity threat mitigation strategies further strengthen the market's resilience, enabling seamless integration of data-driven quantitative models and sophisticated fraud detection algorithms. Additionally, users of online trading platforms can easily monitor the performance of their assets thanks to real-time stock data.

How is this Securities Exchanges Industry segmented?

The securities exchanges industry research report provides comprehensive data (region-wise segment analysis), with forecasts and estimates in 'USD million' for the period 2025-2029, as well as historical data from 2019-2023 for the following segments.

Service

  Market platforms
  Capital access platforms
  Others


Trade Finance Instruments

  Equities
  Derivatives
  Bonds
  Exchange-traded funds
  Others


Type

  Large-cap exchanges
  Mid-cap exchanges
  Small-cap exchanges


Geography

  North America

    US
    Canada


  Europe

    France
    Germany
    Switzerland
    UK


  APAC

    China
    Hong Kong
    India
    Japan


  Rest of World (ROW)

By Service Insights

The Market platforms segment is estimated to witness significant growth during the forecast period. The market is characterized by advanced technologies and systems that enable efficient price discovery, manage settlement risk, and ensure regulatory compliance. Market platforms, which include trading platforms, order-matching systems, and market data dissemination, hold the largest share of the market. These platforms facilitate the buying and selling of securities, providing market liquidity and transparency. Real-time market surveillance and high-frequency trading infrastructure are crucial components, ensuring fair and orderly markets and enabling efficient trade execution. Financial modeling techniques and algorithmic trading platforms optimize trading strategies, while electronic communication networks and central counterparty cleari

We investigate high-frequency reactions in the Eurozone stock market and the UK stock market during the time period surrounding the European Central Bank (ECB) and the Bank of England (BoE)'s interest rate decisions assessing how these two markets react and co-move influencing each other.

The effects are quantified by measuring linear and non-linear transfer entropy combined with a Bivariate Empirical Mode Decomposition (BEMD) from a dataset of 1-minute prices for the Euro Stoxx 50 and the FTSE 100 stock indices.

We uncover that central banks' interest rate decisions induce an upsurge in intraday volatility that is more pronounced on ECB announcement days and there is a significant information flow between the markets with prevalent direction going from the market where the announcement is made towards the other.

As of February 2025, British holding bank HSBC Holdings Plc was the leading finance company listed on the London Stock Exchange (LSE) with a total market capitalization of almost 166 billion British pounds. Second in the ranking was Spanish bank Banco Santander S.A., with a market cap of nearly 77.7 billion U.S. dollars.

As of February 2025, the largest bank listed on the London Stock Exchange (LSE) was the British-owned HSBC Holdings, with a market cap double that of the Spanish bank Santander S.A., the second-largest bank on the LSE.

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Foreign Exchange Market Size 2025-2029

The foreign exchange market size is valued to increase by USD 582 billion, at a CAGR of 10.6% from 2024 to 2029. Growing urbanization and digitalization will drive the foreign exchange market.

Major Market Trends & Insights

Europe dominated the market and accounted for a 47% growth during the forecast period.
By Type - Reporting dealers segment was valued at USD 278.60 billion in 2023
By Trade Finance Instruments - Currency swaps segment accounted for the largest market revenue share in 2023

Market Size & Forecast

Market Opportunities: USD 118.14 billion
Market Future Opportunities: USD 582.00 billion
CAGR from 2024 to 2029 : 10.6%

Market Summary

The market, a dynamic and intricate web of financial transactions, plays a pivotal role in facilitating global trade and economic interactions. Its primary function is to enable the conversion of one currency into another, thereby mitigating the risk of currency fluctuations for businesses and investors. Key drivers of this market include growing urbanization and digitalization, which have expanded trading opportunities to a 24x7 global economy. However, the uncertainty of future exchange rates poses a significant challenge, necessitating effective risk management strategies. The market's evolution reflects the increasing interconnectedness of the global economy. Transactions occur in a decentralized, over-the-counter system, with major trading centers in London, New York, and Tokyo.
Participants include commercial banks, investment banks, hedge funds, and individual investors, all seeking to capitalize on price differences between currencies. Trends shaping the market include the increasing use of automation and artificial intelligence to analyze market data and execute trades. Regulatory changes, such as the introduction of stricter capital requirements, also impact the market's functioning. Looking ahead, the market is expected to remain a vital component of the global financial landscape, with continued growth driven by increased trade and economic interdependence. However, challenges, such as regulatory changes and geopolitical risks, will necessitate adaptability and innovation from market participants.

What will be the Size of the Foreign Exchange Market during the forecast period?

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How is the Foreign Exchange Market Segmented ?

The foreign exchange industry research report provides comprehensive data (region-wise segment analysis), with forecasts and estimates in 'USD billion' for the period 2025-2029, as well as historical data from 2019-2023 for the following segments.

Type

  Reporting dealers
  Financial institutions
  Non-financial customers


Trade Finance Instruments

  Currency swaps
  Outright forward and FX swaps
  FX options


Trading Platforms

  Electronic Trading
  Over-the-Counter (OTC)
  Mobile Trading


Geography

  North America

    US
    Canada


  Europe

    Germany
    Switzerland
    UK


  Middle East and Africa

    UAE


  APAC

    China
    India
    Japan


  South America

    Brazil


  Rest of World (ROW)

By Type Insights

The reporting dealers segment is estimated to witness significant growth during the forecast period.

The market, a dynamic and ever-evolving financial landscape, is characterized by constant activity and intricate patterns. Participants engage in various trading strategies, employing advanced tools such as stop-loss and take-profit orders on forex trading platforms. Real-time data feeds and order book dynamics facilitate trade execution speed, while market microstructure and slippage minimization techniques ensure efficient transactions. Currency correlation analysis and transaction cost analysis are integral to informed decision-making, with backtesting methodologies providing valuable insights. Currency forwards contracts, position sizing techniques, and forex derivatives pricing are essential components of risk management systems. Carry trade strategies, hedging strategies, and interest rate parity are popular tactics employed by market participants.

Algorithmic trading strategies, driven by options pricing models and trading algorithms' efficiency, significantly influence price discovery mechanisms. High-frequency trading and volatility modeling contribute to the market's liquidity risk management, while foreign exchange swaps and currency option valuation help manage risk. The market's complexities necessitate sophisticated risk management systems and intricate order routing optimization. Global payments systems facilitate the smooth transfer of funds, and liquidity risk management remains a critical concern for market participants. According to recent studies, The market is estimated to account for approximately USD6 trillion in daily trading volume, und

Forecast: Chocolate Spreads Market Size Volume in the UK 2023 - 2027 Discover more data with ReportLinker!

The UK IT Services Market Report is Segmented by Service Type (IT Consulting and Implementation, IT Outsourcing, Business Process Outsourcing, and More), End-User Enterprise Size (Small and Medium Enterprises, and Large Enterprises), Deployment Model (Onshore Delivery, Nearshore Delivery, and More), and End-User Vertical (BFSI, Government and Public Sector, and More). The Market Forecasts are Provided in Terms of Value (USD).

The Open-Ended Investment Company Activities industry's revenue is set to contract at a compound annual rate of 5.9% over the five years through 2024-25 to £3.2 billion. The total assets under management in the industry have increased over the past decade, thanks in part to the rollout of automatic enrolment into pensions and the launch of pension funds' capital invested into OEICs. High interest rates caused by soaring inflation damaged the short-term value of fixed assets in portfolios and limited interest in equities. This hampered various markets, including Real Estate, growth industries like FinTech and capital-intensive companies. The cost-of-living crisis prompted retail investors to pull funds from OEICs. UK equity funds felt it most, witnessing a record £1.8 billion outflow in May 2024, according to the Investment Association. This spike extended an existing outflow trend, with 2023 and 2022 seeing £13.6 billion and £12 billion pulled, respectively, as indicated by the Investment Association. However, as prices stabilise and consumer confidence slowly recovers, retail investors have returned to net inflows into funds. Revenue is still rebounding from the drastic hits by inflation and COVID-19, booming at 9.7% in 2024-25, supported by the anticipated sink of interest rates that will pick up investment. Revenue is expected to rise at a compound annual rate of 5.1% to £4.1 billion over the five years through 2029-30. Brexit is likely to continue to impact the industry as UK and EU regulations drift apart, increasing legal costs for OEICs serving clients in the EU. Reforms to insurance margin requirements and the pension age are likely to free up capital used for investments into OEICs. Higher clarity and digital transformation will force a change in the industry with higher domestic investment and digital capabilities being introduced. However, global equity funds are likely to continue to outpace domestic equity thanks to higher returns and liquidity.

As of February 2025, Rolls-Royce Holdings Plc was the leading company in the industrial goods and services sector on the London Stock Exchange (LSE), with a market capitalization of 63 billion British pounds. Second on the list was CRH Plc, with a value of 51.8 billion British pounds.