Strategy Frameworks
BCG Growth-Share Matrix
Also known as: Boston Matrix, Growth-Share Matrix
A portfolio grid that classifies products or business units by market growth and relative market share into Stars, Cash Cows, Question Marks, and Dogs.
Origin: Created by Bruce D. Henderson for the Boston Consulting Group (1970).
Definition
The growth-share matrix plots a company's products or business units on two axes: the growth rate of their market (vertical) and their market share relative to the largest competitor (horizontal). The four resulting quadrants each imply a different investment posture. Stars — high growth, high share — deserve investment to hold their lead. Cash Cows — low growth, high share — throw off cash to fund the rest. Question Marks — high growth, low share — require a bet-or-exit decision. Dogs — low growth, low share — are candidates for divestment.
The framework is a portfolio-allocation tool: it helps a diversified company decide where to pour resources and where to harvest or retreat. Its logic rests on the idea that market share correlates with profitability and that high-growth markets demand cash to keep pace.
It is deliberately simple, and its two axes hide nuance — "relative market share" and "market growth" both require honest, current numbers to place a unit correctly. Misjudge a Question Mark as a Dog and you exit a future Star.
Why it matters for competitive intelligence
Placing a product in the right quadrant hinges on accurate relative-share and market-growth data — exactly the competitor numbers that are hardest to keep current.
How Rivalize helps
Rivalize helps you estimate the "relative market share" axis by tracking competitors' momentum, hiring, and market presence over time — dated signals rather than a one-off guess.
Related terms
Market Share
The percentage of a market's total sales (by revenue or units) captured by one company — the clearest scoreboard of competitive standing.
Total Addressable Market
The total revenue opportunity for a product if it captured 100% of its market — usually paired with the narrower SAM (serviceable) and SOM (obtainable).
Ansoff Matrix
A growth grid mapping four strategies by whether products and markets are new or existing: market penetration, market development, product development, and diversification.
Porter's Five Forces
A framework for judging an industry's profitability by the strength of five competitive forces: rivalry, new entrants, substitutes, buyer power, and supplier power.
See it in practice on Rivalize
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Monitoring, not one-shots
Rivalize tracks changes over time and scores momentum trends. Prompts give you a snapshot that is already stale by the time you read it.
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Sources
- Bruce D. Henderson, "The Product Portfolio," Boston Consulting Group (1970)
This definition is an educational summary of an established concept, written by the Rivalize team. It is not affiliated with, or endorsed by, the originators of the framework.