Information checked: November 6, 2026, at 9:07 a.m. UTC (9:07 a.m. GMT in London).
The FTSE 100 is a benchmark of 100 large, eligible companies listed on the London Stock Exchange. When it rises or falls, it shows how the combined market value of those companies’ eligible shares has changed—not necessarily how every company, household, or part of the UK economy is doing.
On November 5, the index closed at 10,782.66, down 46.55 points, or 0.43%, from the previous close, according to the London Stock Exchange. That is a snapshot of one trading day; the index can move again when markets reopen.
Destaques
The Financial Times Stock Exchange 100 Index, commonly called the FTSE 100 or “Footsie,” was launched in 1984. It is maintained by FTSE Russell, part of London Stock Exchange Group, and is one of the most widely followed measures of the UK stock market. Its starting level was 1,000 points; the number reported today is an index value, not a price in pounds that someone can pay to buy the index.
FTSE Russell selects companies using eligibility rules and ranks them by full market capitalization: broadly, a company’s share price multiplied by its shares in issue. The benchmark is then weighted using investable market value, including an adjustment for free float—the proportion of shares available to investors. The provider explains its approach on its FTSE 100 overview.
Because the index is weighted, its members do not contribute equally. A 2% move in a heavily weighted company can have a much larger effect than the same percentage move in a smaller constituent. The index can therefore rise even when many of its members fall, or decline while many individual shares advance.
A rise means that, taken together and weighted according to the index rules, constituent share prices have increased over the period being measured. A fall means they have decreased. Neither direction tells you that every constituent moved the same way.
For example, if an index rises from 10,000 to 10,100 points, it has gained 100 points, or 1%. If it falls from 10,000 to 9,900, it has lost 1%. Percentages are useful when comparing moves at different index levels: a 100-point move is proportionally smaller when the index starts at 10,000 than when it starts at 5,000.
Investors often compare a day’s closing value with the previous close. Intraday figures are temporary snapshots and may be delayed, so check the timestamp and whether a number is a close or a live reading before drawing conclusions.
Company results, profit forecasts, interest rates, inflation, commodity prices, exchange rates, and global events can all affect the share prices in the index. The effect depends on which businesses are exposed and on what investors had already expected. A company can report higher profits yet see its shares fall if the outcome disappoints expectations.
Currency changes can matter because many FTSE 100 companies do substantial business overseas. For example, a weaker pound can increase the sterling value of foreign-currency earnings, all else being equal. But currency moves also affect costs and demand, so a weaker pound does not guarantee an index rise.
A market report may identify factors that coincided with a move, but it is rarely possible to attribute every point to one cause. On November 5, Reuters reported via Euronext that declines in bank and defense shares weighed on the FTSE 100 as the Bank of England raised interest rates.
It is a useful indicator of large London-listed shares, but it is an incomplete measure of domestic economic health. Many constituents operate internationally, and the index gives more weight to larger companies. Employment, household spending, small businesses, and public services are not directly measured by the index.
For a broader picture, readers can compare it with other measures, such as the FTSE 250, alongside economic data on inflation, wages, and output. Those measures answer different questions and can move in different directions.
FTSE Russell reviews the index quarterly, in March, June, September, and December. Its rules include ranking thresholds intended to reduce unnecessary turnover: a qualifying company generally enters at a review if it rises to 90th or higher, while a constituent generally leaves if it falls to 111th or lower. Corporate events can also lead to changes between reviews. See FTSE Russell’s explanation of the index for the review process.
Funds designed to track the index may need to adjust their holdings when membership changes. Inclusion can therefore affect trading demand, but it does not guarantee that a company’s share price will rise or that the business has suddenly improved. The index calculation is also adjusted for certain changes so that an addition or removal does not by itself create a misleading jump in the benchmark.
You cannot buy the index itself, but a fund or exchange-traded fund can seek to track it. If you own one, its value will generally move with the underlying holdings, although fees, tracking differences, and the timing of transactions mean its return may not exactly match the index.
Check which version of the benchmark you are comparing. The commonly quoted FTSE 100 price index measures share-price changes and excludes dividends. A total-return index assumes dividends are reinvested, making it more useful for assessing the combined effect of price changes and dividends over time. An individual fund’s distributions, charges, and tax treatment can still produce a different result.
Future moves are uncertain. Rather than treating a single day’s rise or fall as a forecast, consider the period measured, the companies driving it, and how much of your overall portfolio is exposed to the index. Diversification across investments and regions can reduce reliance on any one market, though it cannot eliminate the risk of loss.
No. Gains in some heavily weighted companies can outweigh falls elsewhere in the index.
The headline price index does not. A separate total-return version reflects reinvested dividends.
No. You can invest in a fund or ETF that aims to track it, subject to the product’s fees, risks, and tracking differences.
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