MKTG7140 Chap.4 Portfolio and Growth Strategy
Portfolio and Growth Strategy
This chapter reads portfolio tools as resource-allocation claims. The BCG matrix combines market growth with relative market share, while the GE screen broadens the view to market attractiveness and business position. Both require evidence and judgement.
The chapter computes positions, challenges omitted factors, distinguishes growth directions and turns a recommendation into a programme with resources, responsibility, metrics and a contingency.
Position is not the decision
The growth-share matrix uses market growth as a proxy for attractiveness and relative market share as a proxy for competitive strength.
Calculate the ratio with the largest relevant competitor in the denominator, apply any boundary supplied by the case and state the resulting position. Then stop and challenge the proxy.
Margin, cash requirement, synergy, customer relationships, capability and exit costs can all change the allocation.
Broaden evidence carefully
The GE screen considers market attractiveness and business position across several factors, which can make the decision more realistic. It does not remove judgement. The analyst still chooses considerations, evidence and weighting.
A strong answer says which factor drives the rating, identifies the assumption most likely to move the unit into another decision region and recommends research before irreversible commitment.
Connect direction to implementation
Market penetration, market development, product development and diversification describe where growth novelty sits. They do not guarantee success.
The organisation needs a capability that supports the route, a programme that names responsibility and resources, and a metric that tests the mechanism. Write the recommendation as a reversible chain from evidence-backed position to allocation, programme, early indicator and contingency. Return to customer value in the final line.
What this chapter covers
- 01
Relative market share and market growth
- 02
Stars, question marks, cash cows and dogs
- 03
GE market attractiveness and business position
- 04
Synergy and limitations of simple matrices
- 05
Market and product development
- 06
Implementation, metrics and marketing control
Worked example · free
Plot a podcast unit
- 3Calculate relative market share.
- 2Classify the portfolio position.
- 3State what evidence controls investment.
Key terms
- Relative Market Share
- A unit's share divided by the share of the largest relevant competitor.
- Market Growth
- A proxy for market attractiveness used on the growth-share matrix.
- Question Mark
- A low-relative-share unit operating in a high-growth market.
- Cash Cow
- A high-relative-share unit operating in a lower-growth market.
- Business Position
- A multidimensional assessment of a unit's ability to compete.
Portfolio and Growth Strategy FAQ
Why is market share divided by the largest competitor?
The ratio expresses competitive position relative to the strongest rival rather than the size of the unit alone. A respectable absolute share may still be weak against a dominant leader. Show both inputs, the division and the interpretation so the position can be recomputed.
Does a dog category mean immediate divestment?
No. The matrix omits margin, synergy, capability, customer relationships and exit costs. A low-share, low-growth unit may support another unit or retain strategic value. Measure the claimed connection before retaining it, and do not use an untested synergy story to protect weak performance.
How does growth direction differ from portfolio position?
Portfolio position describes a unit within a market. Growth direction describes whether the firm uses existing or new offerings in existing or new markets. A question mark can pursue penetration, product development or another route. The answer must explain how the chosen route can change position.
Exam move
Keep a brief error log after each drill and record which reasoning link failed before repeating the exercise. Recompute relative share with several sets of numbers, including a unit that is itself the market leader. For every category, write one reason the initial implication might change. Then classify four growth moves and add the capability, evidence and control metric required to execute each one.
Create one portfolio where a low-share unit supplies an important capability to another unit and calculate what evidence would establish the connection. For a GE-style decision, list separate attractiveness and business-position factors, identify the most uncertain rating and run a sensitivity check. Finish every allocation recommendation with an early indicator and a stop, revise or scale rule.
Practise separating three sentences: what the matrix establishes, what omitted evidence could change and what management should do. If the recommendation appears in the first sentence, you have probably treated the category as a verdict instead of the beginning of analysis.
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