--- title: you cannot diversify out of the plate canonical_url: https://ensurance.app/guide/you-cannot-diversify-out-of-the-plate markdown_url: https://ensurance.app/guide/you-cannot-diversify-out-of-the-plate.md subtitle: "when dependence is the denominator, diversification spreads claims across one biosphere. the only move left is to fund it." category: nature-finance --- # you cannot diversify out of the plate *when dependence is the denominator, diversification spreads claims across one biosphere. the only move left is to fund it.* You can diversify across firms, sectors, countries and asset classes. You cannot diversify across the biosphere, because every one of those positions stands on it. A screen that drops the "dependent half" of the economy keeps the other half, and the other half stands on the same watersheds, soils, pollinators, forests and climate; the ECB, counting supply chains, found 72% of euro-area non-financial corporations and almost 75% of corporate bank loans highly dependent on at least one ecosystem service. When dependence is the denominator, diversification spreads your claims across one plate. It does not get you off the plate. **Diversify nature risk** is what a careful allocator tries to do once a TNFD disclosure or an asset owner's questionnaire lands, and the honest answer to whether it can be done depends entirely on which reading of dependence you hold. This is the post where the series stops reading rulers and says what changes on a desk when the number is the whole economy. The living systems are the subject throughout; [*ensurance*](/specific?from=guide) appears at the end as the one move left, and it is not the plate. :::johnson **you can rotate sectors. you cannot rotate off the plate.** — If dependence is the denominator, the only diversification that reaches it is funding the source. Everything else moves the risk to a row you named low. [talk to us about one place →](/contact?from=guide&topic=the-trillion-dollar-ruler) ::: ## what changes when the denominator is 100% Three tools stop meaning what they meant. **The sector screen.** A screen built on the WEF classes drops the sectors rated high and medium and keeps the sectors rated low. PwC's 2023 line is the problem: every one of the 163 sectors has a highly dependent portion of its operations or supply chain. The screen did not remove dependence; it removed the sectors where dependence was easy to see. **The materiality threshold.** A threshold says: below this score, the financial effect of ecosystem disruption is likely to be limited. That is PwC's definition of low, and it is a reasonable first-tier judgment. The ECB, scoring borrowers with supply chains counted and a test on any one ecosystem service, read 72% of euro-area non-financial corporations as highly dependent. A materiality threshold is a statement about which tier of the supply chain you stopped reading at. **The low-dependence tilt.** Tilting a portfolio toward low-dependence sectors feels like hedging. In a subsystem it is a change of row, not of exposure. The water the data center needs is the water the farm needs; tilting from the farm to the data center moves the claim and leaves the dependence where it was. [The fine print of the free lunch](/guide/the-fine-print-of-the-free-lunch?from=guide) is about what diversification can and cannot do in general; [the risk a universal owner cannot diversify away](/guide/the-risk-a-universal-owner-cannot-diversify-away?from=guide) is about why this particular risk is systematic for anyone who holds the market. ## the two authorities for the denominator The Dasgupta Review, headline messages, page 2: "our economies are embedded within Nature, not external to it." PwC, 2023: all 163 sectors have a highly dependent portion. One is the principle, one is the reading from inside the industry's own method. Between them there is no half of the economy to rotate into. [The asset class your whole book sits on](/guide/the-asset-class-your-whole-book-sits-on?from=guide) said it first: you can rotate sectors; you cannot rotate off the biosphere. ## the one move left If you cannot diversify out of the plate, the question is not how to avoid the dependence but whether any of what you depend on is funded. The watershed above the utility you hold, the soil under the food company, the forest above the hotel and the aquifer under the data center do their work largely unpaid, and [every unprotected acre has a buyer](/guide/every-unprotected-acre-has-a-buyer?from=guide); [who pays for nature](/guide/who-pays-for-nature?from=guide) is the account of how little of that work is funded by those who depend on it. Funding the source at a named place is the move that reaches the denominator. It does not reduce your dependence; nothing does. It lowers the chance that the thing you depend on fails, which is what a hedge on a physical risk has to do, and it puts your name on a ledger as having done it. [Long or short the source?](/guide/long-the-source?from=guide) runs the two-question test for whether you hold any of what you depend on. [Ensure the asset to ensure the flows](/guide/ensure-the-asset-to-ensure-the-flows?from=guide) is the loop: those who depend on the flows fund the titled asset, and the asset kept whole keeps the flows. [Five firsts, one of each](/guide/five-firsts-one-of-each?from=guide) is the existing ask for an institution that wants to be first on that ledger. This post does not retell them; it only says where they fit once the denominator is the whole book. If what you want is a sector screen, this is not it. If what you want is to hold a position in the thing every position stands on, start with one place you can name, and [tell us which](/contact?from=guide&topic=the-trillion-dollar-ruler). This is research, not investment, legal or tax advice. ## frequently asked ### can you diversify away nature risk? Across firms and sectors, partly; across the biosphere, no. Every sector has a highly dependent portion of its operations or supply chain, so a screen or tilt moves the claim to a different row without leaving the system the rows stand on. The move that reaches the dependence itself is funding the living systems a portfolio depends on, at named places. ### is nature risk systematic or systemic? Both words are used and they mean different things: systematic risk is the part a diversified holder cannot diversify away, systemic risk is the kind that propagates through the whole system. Nature risk is systematic for any holder of the market because every holding depends on the biosphere, and it is systemic where one failing watershed or soil reaches many borrowers at once. [What systemic risk actually is](/guide/what-systemic-risk-actually-is?from=guide) and [the risk a universal owner cannot diversify away](/guide/the-risk-a-universal-owner-cannot-diversify-away?from=guide) take each in turn. ### what does it mean to diversify nature risk if the economy is a subsystem of nature? It means the usual tools, screens, thresholds and tilts, change which row carries the claim rather than reducing the exposure. The remaining lever is on the asset side: fund the places your holdings depend on so that they keep doing the work, and record that you did. ## sources [Dasgupta Review, Headline Messages, 2021, p. 2](https://assets.publishing.service.gov.uk/media/60182857d3bf7f70c2afe5bb/Dasgupta_Review_-_Headline_Messages.pdf). [PwC, *Managing nature risks*, 2023](https://www.pwc.com/gx/en/strategy-and-business/content/sbpwc-2023-04-19-Managing-nature-risks-v2.pdf). [ECB Occasional Paper 333, 2023](https://www.ecb.europa.eu/pub/pdf/scpops/ecb.op333~1b97e436be.en.pdf). Locators are from the founder's check of 9 November 2026; the sandbox this was drafted in cannot reach the source hosts. ## the series 1. [the trillion dollar ruler](/guide/the-trillion-dollar-ruler?from=guide) 2. [what the $44 trillion actually counts](/guide/what-the-44-trillion-actually-counts?from=guide) 3. [follow the supply chain and the number climbs](/guide/follow-the-supply-chain-and-the-number-climbs?from=guide) 4. [the economy is a subsystem](/guide/the-economy-is-a-subsystem?from=guide) 5. [the economy is the smaller number](/guide/the-economy-is-the-smaller-number?from=guide) 6. [you cannot diversify out of the plate](/guide/you-cannot-diversify-out-of-the-plate?from=guide)