Modern economics was built on a single curve: output rising with time. GDP. Productivity. Return on invested capital. The shape of a healthy economy, and of a healthy portfolio, is one that goes up and to the right. We have organized four decades of capital markets thinking around this assumption.
Kate Raworth’s Doughnut Economics challenges that shape. Instead of a single upward line, she proposes a ring: the inner edge is the social floor below which human needs go unmet, and the outer edge is the ecological ceiling beyond which the planet’s systems break down. The goal is not to maximize any single variable. It is to stay inside the ring.
Why this matters for alternative investments
At first glance, the Doughnut is a macro-policy framework. But the framing is useful for any allocator building positions with a ten- or twenty-year horizon, for three reasons.
First, it reframes the cost of externalities. In a traditional growth model, pollution, resource depletion, and inequality are externalities — costs pushed off the balance sheet. In a Doughnut model, they are part of the system you are operating inside. For private markets investors, this means the cost of ignoring ESG is no longer hypothetical. It shows up in stranded asset risk, regulatory cost, and the long-duration liability of carbon-intensive positions.
The shape of the next cycle is not the same shape as the last one. If your allocation model assumes it is, the model is already wrong.
Second, it makes the social floor visible as opportunity. The sectors that serve the social floor — affordable housing, accessible healthcare, education infrastructure, food security — are often treated as impact investments, separate from the main allocation. The Doughnut argues the opposite: these are the sectors with the deepest structural demand over the next twenty years. Ignoring them means ignoring where capital is heading, not just where it should go.
Third, it challenges the benchmark. If the measure of success is no longer “did we beat the index last quarter,” but “did we position the portfolio inside the Doughnut,” then the entire infrastructure of benchmarking, attribution, and performance evaluation needs to be rethought. This is uncomfortable, but it is also honest.
What we take from it
We are not proposing that our clients abandon conventional return targets. That would be neither responsible nor realistic. But we do believe the framework sharpens three practical questions we ask on every mandate:
- Where are the hidden liabilities? What externalities are not priced into this position, and what is the probability they become priced over the holding period?
- Where is the durable demand? Which sectors sit at the intersection of the social floor and the ecological ceiling, and which will compound capital over a long horizon?
- What are we actually optimizing? Is “beat the benchmark” the right objective, or is it a shortcut that used to make sense when the benchmark reflected a stable economy?
The Doughnut is not an investment thesis. It is a framing. But framings shape decisions, and the shape of our decisions over the next decade will determine what kind of economy our clients’ capital contributes to — and what kind of returns it generates.
The economy exists inside society, and society exists inside the biosphere. You can ignore this hierarchy, but you cannot escape it.
Kate Raworth’s insight, in the end, is simple: the economy exists inside society, and society exists inside the biosphere. You can ignore this hierarchy, but you cannot escape it. For capital allocators, the question is not whether to take it seriously. It is how quickly you do.