What to remember
- A favourable portfolio position is not yet a viable economic equation.
- Moving from Grid to Mix requires explicit, dated and owned assumptions.
- More volume can produce less profit when price, cost and specific spending change.
- The executive committee arbitrates an option and its validity conditions, not a matrix colour or one number.
A favourable position is not yet a winning strategy
The complete MIT portfolio management notes separate external factors from internal sources of competitive advantage. The scientific GE/McKinsey matrix paper also preserves two distinct axes. This helps select where to investigate, but it does not yet show that an offer, price or route to market will preserve margin.
A niche can be attractive and the company relatively well positioned while still requiring excessive discounting, costly service, a long launch delay or unattainable volume. The useful bridge translates the portfolio option into testable commercial assumptions.
Market, product, segment, geography, horizon and relative position.
Proposition, net price, channels, volume, costs, capabilities and timing.
Observable thresholds beyond which the option no longer preserves the chosen objective.
Grid fixes the playing field before the numbers
Grid structures the Market × Product × Segment niche, attractiveness factors, key success factors, criteria, weights and polarity. Weighting makes judgement readable; it does not make sources or assessments objective.
The example continues niche A from the attractiveness-strength analysis: 70.5 attractiveness points and 39.0 strength points on an explicitly local scale. It is a teaching example, not a real score or a universal scale. The next question is which way of building the position can be funded without eroding margin.
An option to test, with its scope, decisive criteria, capability gaps and conditions that could invalidate the diagnosis.
Translate the option into commercial assumptions
| Grid output | Assumption tested in Mix | Review signal |
|---|---|---|
| Priority premium segment | Realised net price after discounts | Actual price below plan |
| Channel access to build | Activation cost, delay and deliverable volume | Delay or acquisition cost above plan |
| Relative strength still weak | Specific spending and capability ramp-up | Capability unavailable on time |
| Portfolio option | Prudent, central and favourable scenarios | Margin or profit below the chosen threshold |
This translation prevents a strategic score from becoming a shortcut to a budget. Every commercial assumption keeps a unit, source, owner, date and decision consequence.
Three ways to play the same option create different economics
Purely illustrative one-year example. Unit contribution equals net price minus unit variable cost. Contribution equals unit contribution times volume. Illustrative profit then subtracts scenario-specific fixed costs.
| Scenario | Price / variable cost | Volume | Contribution | Fixed costs / profit |
|---|---|---|---|---|
| Selective | €120 / €78 = €42 | 25,000 | €42 × 25,000 = €1,050,000 | €400,000 / €650,000 |
| Expansion | €108 / €76 = €32 | 32,000 | €32 × 32,000 = €1,024,000 | €520,000 / €504,000 |
| Premium | €126 / €82 = €44 | 24,000 | €44 × 24,000 = €1,056,000 | €430,000 / €626,000 |
Expansion sells 7,000 more units than Selective but produces €146,000 less profit. Premium has the highest contribution yet remains €24,000 below Selective after fixed costs. Neither volume nor contribution alone selects the scenario.
Break-even and target profit answer different questions
The complete OpenStax break-even chapter defines the unit threshold as fixed costs divided by unit contribution. Rounded up, the three break-even volumes are 9,524, 16,250 and 9,773 units. They show where profit stops being negative, not where an option matches the best alternative.
| Scenario | Formula | Required volume | Gap to assumed volume |
|---|---|---|---|
| Selective | (€650,000 + €400,000) ÷ €42 | 25,000 | 0 |
| Expansion | (€650,000 + €520,000) ÷ €32 | 36,563 | +4,563 |
| Premium | (€650,000 + €430,000) ÷ €44 | 24,546 | +546 |
Premium is close but conditional: it must sell at least 24,546 units under the stated price and cost assumptions. The threshold becomes a decision condition rather than a promise.
Price, costs, timing and demand can reverse the trade-off
Gerard Tellis’s complete meta-analysis shows that elasticities vary by category, life cycle, method and country, while omitted distribution or quality variables can create severe bias. Volume must not be presented as an automatic response derived from price.
The OpenStax sensitivity chapter separates price, variable cost, fixed cost and volume effects. A three-month delay also shortens the executable selling period, so the volume assumption must change rather than hiding the delay in an annual average.
Deduct discounts, rebates, promotions and mix effects.
Include each cost actually induced by a sold unit once.
Add channel, launch, support and capability spending to the relevant scenario.
Test sellable and deliverable volume in the decision window, not theoretical potential.
PepsiCo shows that a price-volume aggregate is not yet margin
For 2025, PepsiCo’s earnings release, page 14 reports total effective net pricing of +4%, organic volume of −2% and organic revenue growth of +2%. The SEC-filed annual report, page 51 repeats those orders of magnitude.
The documents note that volume and revenue relationships vary with product mix, nonconsolidated joint ventures and timing. The case supports separating price, volume and mix; it does not reveal the margin of one local option or prove use of a Grid-to-Mix decision path.
Grid to Mix is a decision path, not a silent transfer
- Grid frames the option
Scope, attractiveness, strength, criteria, gaps and reason to continue.
- The team states assumptions
Price, volume, costs, channel, capability, timing, owners and sources.
- Mix compares scenarios
Same scope, same cost conventions and comparable outcomes.
- The committee arbitrates
Chosen option, accepted exposure, review thresholds and next checkpoint.
This sequence is a working discipline. Scope, assumptions and version must be confirmed at every hand-off; the page does not claim that data moves by itself from one module to another.
The committee arbitrates an option with review thresholds
- Which niche and option were actually compared?
- Which profit, contribution or exposure must be preserved?
- Which price, volume, cost, capacity and timing assumptions are decision-critical?
- Which signal invalidates each assumption, who owns it and how often is it reviewed?
- Which decision reopens when the threshold is crossed?
A sound decision does not place a strategic matrix next to a budget. It connects the option to the economics that make it defensible and retains the signals that can contradict it.
Complete sources
Portfolio and diagnosis
- MIT OpenCourseWare, Portfolio Management, complete PDFExternal factors, internal advantage and portfolio logic.
- Yildiz et al. (2023), GE/McKinsey matrix, complete scientific PDFAxes, weights and application limits.
Scenario economics
- OpenStax, Calculate a Break-Even PointComplete chapter on contribution and break-even.
- OpenStax, Perform Break-Even Sensitivity AnalysisComplete chapter on price, volume and costs.
- Tellis, The Price Elasticity of Selective DemandComplete scientific PDF on variation and estimation bias.
Real case
- PepsiCo 2025 fourth-quarter and full-year resultsComplete PDF, price-volume-revenue table on page 14.
- PepsiCo 2025 annual report filed with the SECComplete PDF, table and qualifications on page 51.