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Financial Times Industrial Ordinary Share Index: Overview and Significance

An in-depth look at the Financial Times Industrial Ordinary Share Index, including its historical context, types, key events, models, and its importance in the financial world.

The Financial Times Industrial Ordinary Share Index (FT 30) is a significant stock market index that tracks the share prices of 30 leading UK industrial and commercial companies listed on the London Stock Exchange. This index notably excludes banking and insurance shares and government stocks. The FT 30 was established with a base value of 100 in 1935.

Detailed Explanation

The FT 30 index includes a selection of prominent industrial and commercial companies, providing a snapshot of market trends within these sectors. By excluding banking, insurance shares, and government stocks, the index focuses solely on industrial activities.

Mathematical Models

The index value is calculated as follows:

Index Value = \( \frac{\sum (P_i \cdot S_i)}{D} \)

where:

  • \( P_i \) = Current price of the stock
  • \( S_i \) = Shares outstanding
  • \( D \) = Divisor, adjusted for stock splits, dividends, and other relevant changes.

Importance

The FT 30 is critical for historical analysis of the UK stock market, serving as a barometer for the industrial sector’s health over time. It allows investors to track the performance of the UK’s industrial companies independently of financial sector volatility.

Applicability

Investors, analysts, and policymakers use the FT 30 to:

  • Compare historical performance of the industrial sector
  • Identify trends within the industrial sector
  • Make investment decisions based on sector-specific data

Types

  • Industrial Companies: Manufacturing, mining, and production firms.
  • Commercial Companies: Retail and distribution firms.

FAQs

What is the base value of the FT 30?

The base value was set at 100 in 1935.

Does the FT 30 include banking and insurance companies?

No, the FT 30 excludes banking and insurance shares.

How is the FT 30 calculated?

It is calculated based on the sum of the current price of included stocks, multiplied by their outstanding shares, and divided by an adjusted divisor.
Revised on Monday, May 18, 2026