In January 2026, *** was the largest company on the Financial Times Stock Exchange 100 Index, with a market cap of billion British pounds, just edging out pharmaceutical giant *, with a market cap of more than *** billion British pounds.
What is the FTSE 100 index?
The Financial Times Stock Exchange 100 Index, commonly known as the "Footsie", is the most widely recognized stock market index in the United Kingdom. It is made up of the 100 largest blue-chip companies on the London Stock Exchange. Companies from various sectors, such as healthcare, consumer goods, and energy, are included in the index, as are leading banks of the United Kingdom, such as HSBC, Lloyds Banking Group, and Barclays. Moreover, it can be seen as a reflection of the investment climate in the United Kingdom.
What is not included in the FTSE 100 Index?
Most notably, the FTSE 100 Index, like most indices, is not adjusted for inflation. While inflation in the United Kingdom has gone down dramatically since 2023, it might be useful to adjust the historic figures on the index when comparing historic data to current levels. This is especially important when the index seems to have increased by a few percentage points because inflation may have increased at a faster rate than stock prices.Â
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London Stock Exchange. (January 26, 2026). Largest companies on the FTSE 100 index as of January 26, 2026, by market capitalization (in billion GBP) [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 22, 2026, from /statistics/1405426/largest-companies-on-ftse-100-index/
London Stock Exchange. "Largest companies on the FTSE 100 index as of January 26, 2026, by market capitalization (in billion GBP)." Chart. January 26, 2026. ÌÇÐÄÆÆ½â°æ. Accessed July 22, 2026. /statistics/1405426/largest-companies-on-ftse-100-index/
London Stock Exchange. (2026). Largest companies on the FTSE 100 index as of January 26, 2026, by market capitalization (in billion GBP). ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 22, 2026. /statistics/1405426/largest-companies-on-ftse-100-index/
London Stock Exchange. "Largest Companies on The Ftse 100 Index as of January 26, 2026, by Market Capitalization (in Billion Gbp)." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 26 Jan 2026, /statistics/1405426/largest-companies-on-ftse-100-index/
London Stock Exchange, Largest companies on the FTSE 100 index as of January 26, 2026, by market capitalization (in billion GBP) ÌÇÐÄÆÆ½â°æ, /statistics/1405426/largest-companies-on-ftse-100-index/ (last visited July 22, 2026)
Largest companies on the FTSE 100 index as of January 26, 2026, by market capitalization (in billion GBP) [Graph], London Stock Exchange, January 26, 2026. [Online]. Available: /statistics/1405426/largest-companies-on-ftse-100-index/