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BCG Matrix

💼 Business By CampusDown Wiki Editorial Team Last updated
Quick answer: the BCG matrix is a portfolio tool that sorts a company's businesses by market growth and relative market share into stars, cash cows, question marks and dogs, to decide where to invest and where to harvest cash.
Contents
  1. 1. Background
  2. 2. The two axes
  3. 3. Four cells and strategies
  4. 4. Uses and related models
  5. 5. Limitations and criticism
  6. 6. References

Background

In the 1960s and 1970s large U.S. firms became diversified conglomerates, and allocating limited funds across businesses became a central problem. Bruce Henderson (1970), founder of the Boston Consulting Group (BCG), proposed the growth–share matrix, treating the businesses as a "portfolio" and balancing those that generate cash against those that consume it. Hedley (1977) developed it into a method for strategy making in multibusiness companies.

The two axes

  • Market growth rate (vertical): the annual growth of the business's market, typically split high/low around 10%. Growing markets require heavy investment just to hold share.
  • Relative market share (horizontal): the firm's share divided by that of its largest competitor; above 1.0 means market leadership. Higher share means greater cumulative output, and through the experience curve (unit cost falls by a fixed percentage each time cumulative output doubles) lower costs and stronger cash generation.

Four cells and strategies

  • Stars: high growth, high share. Profitable but investment-hungry; build to hold or grow share.
  • Cash cows: low growth, high share. Little investment needed and plenty of surplus cash that funds other units; hold and harvest cash.
  • Question marks: high growth, low share. They consume cash with uncertain prospects; choose between heavy investment to make them stars or exit.
  • Dogs: low growth, low share. Weak profit and growth prospects; harvest or divest.

The ideal "success sequence" uses cash from cows to turn question marks into stars, which in turn become cash cows as their markets mature. If a question mark fails to gain share before its market matures, it drops into the dog cell.

The BCG matrix was widely used for allocating resources across divisions, choosing restructuring targets and managing product lines. The nine-cell GE–McKinsey matrix refined it by replacing the two axes with composite scores of "industry attractiveness" and "business strength." Together with Porter's Five Forces for industry structure and SWOT analysis for internal and external factors, it is a staple of strategy courses.

Limitations and criticism

  • It judges attractiveness and competitiveness with only two variables.
  • Share and growth depend heavily on how the market is defined.
  • The share–profitability link does not hold in every industry. Hambrick et al.'s (1982) PIMS-based analysis found performance differences across the cells, but dogs were not necessarily loss-makers.
  • It ignores synergies between businesses and profitable niche or differentiation strategies, and labeling a unit a "dog" can damage morale.

See also: Product Life Cycle

References

  1. Henderson, B. D. (1970). The Product Portfolio (BCG Perspectives). Boston: The Boston Consulting Group.
  2. Hedley, B. (1977). Strategy and the "business portfolio". Long Range Planning, 10(1), 9–15.
  3. Hambrick, D. C., MacMillan, I. C., & Day, D. L. (1982). Strategic attributes and performance in the BCG matrix: A PIMS-based analysis of industrial product businesses. Academy of Management Journal, 25(3), 510–531.

Reports and materials that use this theory (Korean)

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This article was last updated on October 15, 2026. It is based on widely recognized original works and textbooks; when citing it in a paper, please check the original sources listed in the references.