One comprehensive showcase. The Nexus frames the two worlds; each world opens its working demonstration; the connective layer shows how measurement makes a financial claim defensible. All names, figures and entities are fictional and composite.
Sigma IMS  /  The Missing Link

Where national M&E meets impact capital

Impact capital and national monitoring-and-evaluation systems run on separate tracks. The methodology is the connective layer between them: it lets one measurement effort serve both the investor's frameworks and the country's results system, so that INFF Monitoring and Review, the integrator that links all finance to national outcomes, rests on a credible measurement base. Step through the data flow, or switch the link off to see what breaks.

Impact capital ecosystem
Sigma connective methodology (the link)
National M&E and public finance (INFF)
The link

Impact capital

Investors, DFIs, blended finance
Allocate capital toward SDG-aligned outcomes
Enterprises and investees
Generate outcomes; hold the source data
Portfolio and fund level
Outcomes roll up across investees

National M&E and INFF

National plan and SDGs
The results the country owns and must finance
INFF building blocks
Assessment, financing strategy, monitoring and review, governance
Block 3
Monitoring and Review
The integrator that links all finance to national results
Pillar 2
National M&E system
The capacity beneath the integrator
Without the link: impact capital reports in its own frameworks, the national M&E system runs on a separate track, and INFF Monitoring and Review has no credible measurement beneath it. The integrator becomes administrative theatre, and private capital cannot be traced to national results.
Step 1 of 6

One portfolio, the whole flow

The blue economy fund is edited on the impact-capital tab and traced through the national M&E adjustments. Edit anything on those tabs and these figures move together.

Capital deployed
-
across the portfolio
Guarded portfolio outcomes
-
after the double-count guard
Attributed country contribution
-
contribution and reliability applied
Claim tier
-
Measured share, baseline-gated

Not one firm's view

The nexus thesis is articulated across senior network voices in the evaluation and development-finance field, which is why it lands with an evaluation audience rather than reading as a vendor claim.

GEI 2.0 (names MESA as foundational)
World Bank IEG
Cerise and SPTF
UNEP-FI
UN Statistical Commission task team
INFF Facility partners

How to read this. Two flows run through the same data. Allocation flows from national priorities through opportunity identification to where capital is deployed. Measurement flows the other way, from enterprise outcomes up through portfolio aggregation, claim-tiering, the national M&E system, and into INFF Monitoring and Review. The same data effort serves both, which is what removes the duplicate reporting burden. Pillar 3 (trajectory) sits across the whole picture, asking whether the system is improving fast enough.

Boundary. Sigma IMS supplies the measurement infrastructure intelligence; investors and governments make the decisions. The crosswalk logic and aggregation methods that make this work are not shown here; this is the architecture, not the engine. Deploys free to Cloudflare Pages for a live walkthrough at Glocal.

Impact capital world: the Fund Framework projection

The investor-side engine. One portfolio data effort, expressed in several impact-investing frameworks at once, with the baseline gate setting what may be claimed as Measured. This is what the impact-capital column of the nexus does in practice.

Connective layer: Social Return on Investment, made defensible

A single return ratio is the most common way impact capital talks about value, and it is exactly where the nexus becomes tangible. A return ratio is a claim about value created, and that claim is only as trustworthy as the measurement system that produced it. This is the bridge between the two worlds: good measurement infrastructure is what makes a financial impact claim real.

What a single ratio hides

What was counted. Which outcomes, for which stakeholders, were included, and which were left out because they resist monetisation.
How outcomes were valued. The monetary proxies assigned to non-market outcomes, each embedding a judgement about worth.
How values were aggregated. The rule used to combine many outcomes into one figure; different rules produce materially different results from identical data.
What was assumed about attribution and risk. How much of the change is credited to the investment rather than to other actors, and how the risk to the outcome was treated.

The same data, three aggregation choices (illustrative)

Seeded with the Pacific Blue Capital enterprise outcomes. Edit any monetised value and watch all three ratios move. The point is not which ratio is right; it is that the ratio is a construction, not an objective fact.

OutcomeStakeholderPriority weightObserved changeMonetised value (USD M)
Livelihood improvementSmallholder fishers40%+40% income
Employment and inclusionProcessing employees20%180 FTE
Ecosystem restorationMarine biodiversity25%-30% bycatch
Carbon sequestrationGlobal climate15%-25% fuel use
Capital invested: USD 3.5M (Series A, composite). Ratios below are value created divided by capital.
0.00x
Total monetised value: every outcome counted at face value.
0.00x
Priority-weighted: outcomes scaled by stakeholder priority weight.
0.00x
Balanced: limited by the weakest outcome, so no single line carries the claim.

Illustrative, generic aggregation rules shown to make the point visible. Sigma IMS shows the dimensional scores first, makes the aggregation choice explicit and records it, and validates the result against informed human judgement. The protected internal aggregation logic is not shown here. Sigma IMS supplies measurement infrastructure intelligence; the investor decides.

Scaling the logic from fund to country. The same nexus operates one level up. Where a fund needs credible portfolio measurement to deploy capital well, a country needs a credible national M&E system to know whether its financing is producing results. A return ratio rests on a fund's measurement system; a national results framework rests on the country's. The connective methodology is what makes both trustworthy, which is the bridge this whole showcase demonstrates.
National M&E and INFF world: the Private Capital Trace-back

The bridge to the sovereign side, running live on the same blue economy portfolio you edit on the impact-capital tab. Part 1 sets the national M&E adjustments and shows per-country attribution; Part 2 shows the portfolio lattice, the guarded totals, and the INFF Monitoring and Review mapping.

National M&E adjustments (editable)

Investor contribution, the BVA counterfactual65 percent
CountryMESA (0 to 100)INCE (0 to 10)Derived reliability
Philippines-
Indonesia-
Vietnam-
Thailand-
Malaysia-
Myanmar-

Reliability is derived from the MESA and INCE diagnostic, the keystone of the bridge. Raise a country's scores and its reliability factor lifts the attributed contribution. Contribution is the counterfactual judgement, set once for the portfolio.

Per-country attribution (live)

Attributed contribution is the guarded portfolio net for the country, reduced by the contribution factor and that country's reliability factor. The double-count guard rate is set on the impact-capital tab and applies within multi-company countries.

Portfolio lattice (live)

Portfolio aggregation

Edit beneficiary numbers and baselines on the impact-capital tab; the guard, the claim tier, and these totals follow.

INFF Monitoring and Review mapping

Country contribution mapped to the INFF Monitoring and Review indicator structure, ready for institutional feed subject to LP and investor consent. Sigma IMS supplies the evidence; the investor and the country decide.