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What is the FTSE 100?

The FTSE 100, also known as the "Footsie", is a vital indicator of the health of the UK stock market. It's a stock market index that tracks the performance of the 100 largest companies listed on the London Stock Exchange (LSE) by market capitalisation.

Here's a breakdown of what the FTSE 100 means for investors:

  • Big Businesses, Big Impact: The FTSE 100 represents the biggest and most well-established companies in the UK. These are often referred to as "blue chip" companies because of their financial stability and long track record.
  • Market Performance Gauge: By tracking the share prices of these 100 companies, the FTSE 100 provides a snapshot of how the overall UK stock market is performing. If the FTSE 100 goes up, it generally indicates that the market is doing well, and vice versa.
  • Real-time Updates: The FTSE 100 is calculated and published every second the market is open, offering investors an up-to-the-minute picture of market sentiment.

How is the FTSE 100 Composed?

Companies must meet specific criteria to be included in the FTSE 100. These include:

  • Market Capitalisation: They must be among the 100 largest companies on the LSE based on their total market value. This is achieved by multiplying the share price by the number of shares outstanding.
  • Listing Location: They must be listed on the London Stock Exchange.
  • Currency: Their shares must be denominated in pounds sterling.
  • Liquidity: Their shares must be traded frequently enough to ensure smooth buying and selling.

The composition of the FTSE 100 is reviewed quarterly, meaning companies can enter or exit the index based on their performance and market capitalisation.

Why is the FTSE 100 Important?

The FTSE 100 is a significant benchmark for investors because:

  • Market Health: It reflects the overall health of the UK stock market.
  • Investment Strategy: Many investment funds track the FTSE 100, so understanding its movement is crucial for investors interested in these funds.
  • Investor Confidence: The FTSE 100 can influence investor confidence. A rising FTSE 100 can signal a strong economy and attract further investment.
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