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Fundamental Weight Index

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Moneyzine Editor
2 mins
January 18th, 2024
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Fundamental Weight Index

Definition

The term fundamental weight refers to a specific approach used in the calculation of a market index. With a fundamental weight index, an economic factor such as revenues or net income determines the equity's influence on the index.

Explanation

Also referred to as a stock market index, an equity index is a sample of equities, or common stocks, which are used as a benchmark when comparing the performance of a smaller set of equities or an individual stock. The method used to determine how an index is calculated is important for the investor-analyst to understand, since it provides insights into the significance of the index's movement over time.

If an index is calculated using the fundamental weight approach, a single factor, or a combination of fundamental factors determines that security's influence, or effect on, the movement of the index. The common stock of a company with strong and improving fundamentals will cause the index to move to a greater extent than a weak or weakening company. Typical fundamental factors are those that might be used in corporate valuation such as revenues / sales, book value, dividends, cash flow or earnings.

One of the benefits of a fundamental index is the approach can help negate a bias caused by one sector, especially if only one factor is used in the calculation. For example, fundamental factors are typically used to derive a company's intrinsic value, whereby an index based on capital weight also assigns extrinsic value to the index. Proponents of this approach point to the fact the weight is based on a quantifiable measure of the company's performance. Critics claim the approach is too complex and requires the investor to understand how the index is calculated.

The S&P 500 Value Index is an example of a fundamental weight index.

Related Terms

Capitalization Weight (Cap Weight)
The term capitalization weight refers to a specific approach used in the calculation of a market index. With a capitalization weight index, the total market value of the security determines its influence on the index.
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Equity (Investment)
The term equity refers to a security traded on a stock exchange that represents ownership in a company. The value of that ownership can be found using the company's assets and liabilities.
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Index Weighting
The term index weighting refers to the approach used in the calculation of a market index. The factors used for index weighting determines how much influence an individual security has on the movement of the index over time.
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What Is an Equity Index (Stock Market Index)?
The term equity index refers to a sample of equities used to measure the performance of a sector of equities. An equity index is a tool investors use to understand how individual equity performs relative to its peers.
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The term price weight refers to a specific approach used in the calculation of a market index. With a price weight index, the total market value of the security determines its influence on the index.
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