Introduction to BCG Matrix

The BCG Growth-Share Matrix, developed by Boston Consulting Group in 1970, helps companies allocate resources across business units. It classifies businesses on market growth rate and relative market share.


The Four Quadrants

QuadrantCharacteristicsCash Flow
Stars ⭐
(High Growth, High Share)
Market leaders in growing marketsNeutral (reinvest)
Cash Cows 🐄
(Low Growth, High Share)
Leaders in mature marketsHighly Positive
Question Marks ❓
(High Growth, Low Share)
Uncertain futureNegative
Dogs 🐕
(Low Growth, Low Share)
Little potentialNeutral/Negative

Strategic Implications

  • Stars: Invest heavily to maintain leadership
  • Cash Cows: Harvest cash, minimal investment
  • Question Marks: Invest selectively or divest
  • Dogs: Divest or liquidate
Ideal Portfolio: Cash Cows fund Stars and select Question Marks. Avoid too many Dogs.

Constructing the Matrix

Relative Market Share = Your Share / Largest Competitor's Share

RMS > 1.0 means you are the market leader

  1. Identify strategic business units
  2. Calculate market growth rate
  3. Calculate relative market share
  4. Plot on matrix (circle size = revenue)

Limitations

  • Oversimplification (only two dimensions)
  • High growth doesn't always mean attractive
  • Ignores synergies between SBUs
  • Static snapshot in time

Conclusion

Key Takeaways

  • BCG plots products on growth rate vs. market share
  • Stars: Invest; Cash Cows: Harvest
  • Question Marks: Select; Dogs: Divest
  • Goal is balanced portfolio
  • Use alongside other strategic tools