What is a BCG Growth Share Matrix

The Boston Consulting Group (BCG) growth share matrix is a planning tool that uses graphical representations of a company’s products and services in an effort to help the company decide what it should keep, sell or invest more in. The matrix plots a company’s offerings in a four square matrix, with the y-axis representing rate of market growth and the x-axis representing market share. It was developed by the Boston Consulting Group in 1970.

BREAKING DOWN BCG Growth Share Matrix

The BCG growth share matrix breaks down products into four categories: dogs, cash cows, stars, and “question marks.”

Characteristics of Each Quadrant

1. Dogs (or pets): If a company’s product has low market share and is in a low rate of growth market, it is considered a “dog” and should be sold, liquidated, or repositioned. Dogs, found in the lower right quadrant of the grid, don't generate much cash for the company since they have low market share and little to no growth. Because of this, dogs can turn out to be cash traps, tying up company funds for long periods of time. For this reason, they are prime candidates for divestiture.

2. Cash cows: Products that are in low growth areas but for which the company has a relative large market share are considered “cash cows,” thus, the company should milk the cash cow for as long as it can. Cash cows, seen in the lower left quadrant, are typically leading products in markets that are mature. Generally, these products generate returns that are higher than the market's growth rate and sustain themselves from a cash flow perspective. These products should be taken advantage of for as long as possible. The value of cash cows can be easily calculated since their cash flow patterns are highly predictable. In effect, low-growth, high-share cash cows should be milked for cash to reinvest in high-growth, high-share “stars” with high future potential.

3. Stars: Products that are in high growth markets and that make up a sizable portion of that market are considered “stars” and should be invested in more. In the upper left quadrant are stars, which generate high income but also consume large amounts of company cash. If a star can remain a market leader, it eventually becomes a cash cow when the market's overall growth rate declines.

4. Question marks: Questionable opportunities are those in high growth rate markets but in which the company does not maintain a large market share. Question marks are in the upper right portion of the grid. They typically grow fast but consume large amounts of company resources. Products in this quadrant should be analyzed frequently and closely to see if they are worth maintaining.

The matrix is a decision making tool, and it does not necessarily take into account all the factors that a business ultimately must face. For example, increasing market share may be more expensive than the additional revenue gain from new sales. The matrix is not a predictive tool; it neither takes into account new, disruptive products entering the market nor rapid shifts in consumer demand. Because product development may take years, businesses must plan for contingencies carefully.