When was ftse 100 started

Overview

The FTSE 100, often referred to as the "Footsie," is one of the most widely followed stock market indices in the world. It serves as a benchmark for the performance of the UK's largest publicly traded companies and is closely watched by investors, economists, and policymakers.

Launched on January 3, 1984, the index was designed to reflect the health of the UK economy through the lens of its most valuable firms. Over the decades, it has become a barometer for global investor sentiment toward British equities and multinational corporations headquartered in the UK.

• Launch date: The FTSE 100 officially began trading on January 3, 1984, replacing older indices like the FT 30.
• Founding organizations: It was created through a partnership between the Financial Times and the London Stock Exchange (LSE).
• Base value: The index started with a baseline of exactly 1,000 points to simplify tracking and comparisons over time.
• Initial composition: The original index included the 100 largest companies listed on the LSE based on market capitalization.
• Rebalancing: The index is reviewed and adjusted quarterly to ensure it continues to reflect the largest and most liquid stocks.

How It Works

The FTSE 100 is a capitalization-weighted index, meaning companies with higher market values have a greater influence on its movements. This structure ensures that changes in large firms like BP or AstraZeneca impact the index more than smaller constituents.

• Market Capitalization: This is the total market value of a company’s outstanding shares. It is calculated by multiplying share price by total shares issued.
• Free-Float Adjustment: Only publicly tradable shares are included, excluding locked-in shares held by governments or insiders.
• Weighting: The index uses free-float market capitalization weighting, so larger companies have a proportionally greater impact on index performance.
• Index Rebalancing: Reviewed every three months by FTSE Russell to add or remove companies based on size and liquidity.
• Divisor Adjustment: A special index divisor is used to maintain continuity during corporate actions like stock splits or dividends.
• Real-Time Calculation: The index is updated every 15 seconds during trading hours to reflect current market conditions.

Comparison at a Glance

Here’s how the FTSE 100 compares to other major global indices in terms of structure, size, and focus:

While the FTSE 100 is smaller in market cap than the S&P 500, it remains a critical indicator of European economic health. Its multinational focus means many FTSE 100 firms generate more revenue overseas than in the UK, making it sensitive to global trends like commodity prices and exchange rates.

Why It Matters

The FTSE 100 is more than just a number—it’s a vital tool for understanding financial markets and economic trends. Investors use it to benchmark portfolios, while governments and analysts monitor it to gauge economic confidence.

• Economic Indicator: The index often reflects the overall health of the UK economy, especially through sectors like banking and energy.
• Investor Benchmark: Fund managers compare their performance against the FTSE 100 to assess relative returns.
• Global Exposure: Over 70% of FTSE 100 revenues come from outside the UK, making it a proxy for global market sentiment.
• Index Funds: Trillions of dollars are invested in funds that track or replicate the FTSE 100’s performance.
• Media Coverage: Daily movements are reported across news outlets, influencing public perception of market trends.
• Policy Impact: Central banks and regulators monitor the index when making decisions about interest rates and financial regulation.

Since its inception in 1984, the FTSE 100 has evolved into a cornerstone of global finance. Its longevity and reliability make it a trusted measure of corporate success and economic resilience in the UK and beyond.