Every growth portfolio has a hidden liability: the initiatives that stopped compounding two years ago but still consume executive attention. Defunding is the highest-leverage capital-allocation decision most boards never make.
How should a growth business decide what to defund?
The reversal
The dominant portfolio conversation is about what to add. The higher-leverage conversation is about what to stop. A decade of capital-allocation research1 shows that active portfolio reallocators — those who move more than 6% of capital between businesses per year — outperform passive reallocators by roughly 40% of shareholder return over ten-year periods. Growth is a reallocation game, not an addition game.
The insight stack
What actually moves the P&L
Score every initiative on strategic fit AND economic momentum
A 2x2 with strategic fit on one axis and 12-month economic momentum on the other exposes the initiatives that survived on identity alone. Anything low on both is a defund candidate; anything high on both is a fund-more candidate. The uncomfortable quadrant — high fit, low momentum — is where most executive time is spent and most capital is lost.
Set a defunding cadence, not a defunding event
Portfolio reviews once a year invite theatre. Rolling quarterly reviews with pre-committed thresholds — 'if this initiative has not hit these three markers by Q3, funding drops by 40%' — replace politics with governance. The thresholds are decided in advance; the review only confirms which state applies.
Redeploy freed capital to compounding bets, not to new bets
The instinct after a defund is to launch something new. The higher-return move is almost always to deepen the bet that is already compounding. Compounding earns compound returns; new bets earn option value with high variance. Portfolios that treat defunding as a redeploy-to-what-works move outperform those that treat it as a fund-what's-next move.
Case example
A £45M multi-line SaaS company
A multi-product SaaS company was running four product lines. One was compounding at 60% NRR growth; two were flat; one was declining. Board attention was proportional to distress — 70% of executive time went to the declining and flat lines. A structured portfolio review defunded the declining line entirely, moved one flat line into maintenance mode with a 60% cost reduction, and redeployed the freed engineering, marketing, and executive capacity to the compounding line. Twelve months later, total revenue grew 34%, operating margin moved from 6% to 17%, and executive time on the winning line had roughly tripled.
Mini-playbook
Quarterly portfolio discipline
Score every initiative on strategic fit and 12-month economic momentum.
Pre-commit thresholds and consequences for each initiative before the quarter starts.
Publish the 2x2 to the executive team monthly; force decisions in the uncomfortable quadrant.
Ring-fence at least 60% of defunded capital for redeployment into existing compounders.
Treat portfolio decisions as reversible: defunded initiatives can be re-funded with new evidence.
How Strategy Labs installs this
Anchored to Performance management
CAE runs the portfolio diagnostic against the operating model and performance management artefacts, so defunding decisions are integrated with capability and capacity plans — not made in isolation.
PDC hosts the initiative scorecards, quarterly review packs, and redeployment tracking, giving the board a single source of truth for portfolio decisions across cycles.
Frequently asked
Related questions executives ask
- How much capital should be reallocated annually?
- Capital-allocation benchmarks1 suggest active reallocators move more than 6% of capital between businesses per year. Below 3%, the portfolio is effectively frozen and the outperformance from reallocation is not being captured.
- How do we avoid the sunk-cost trap?
- Pre-commit thresholds in writing before the quarter starts. Sunk-cost bias operates most powerfully when the decision and the evidence are considered together; separating them by weeks removes most of the emotional load.
- What is the right ratio of new bets to existing bets?
- There is no universal ratio. In compounding businesses, deepening what already works usually beats launching what is new — the compounding rate is the highest-return use of marginal capital until it saturates.
Over to you
Which initiative in your portfolio has survived on identity rather than on economics — and what would it take to defund it this quarter?
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