Below the UBO threshold, control does not disappear. Your visibility does.
ZENO identifies the Ultimate Controlling Owners that may fall outside UBO frameworks, and quantifies their effective influence on an auditable scale.
Used in compliance, AML, and within risk teams that cannot afford to misread control.
The 25% threshold is a regulatory line. Not a control line.
Beneficial ownership frameworks were designed for one purpose: identify the natural persons behind legal entities for AML and KYC obligations. They draw a fixed line, generally at 25% of capital or voting rights, and classify accordingly.
This works for what it was designed to do. It does not tell you who controls the company.
A shareholder at 24% in a fragmented capital structure can drive board decisions, block resolutions, and define strategic direction. A shareholder at 26% sitting next to a 40% holder may have far less effective influence. UBO classifications cannot distinguish these situations, because UBO is a threshold, not a measurement.
The clearest way to see this is on a real case. Step into a Z-CAT analysis of Vander Dynamics ↓
5 percentage points. UBO drops Martin. The Power Index keeps him.
An illustrative Z-CAT case on Vander Dynamics, a 28-node corporate group across 5 ownership levels. Track one shareholder, Martin Dupont, as his stake moves from 25% to 20%, and watch what each framework reports.
Vander Dynamics and Martin Dupont are fictional, used here to make the structural point visible. The mechanism is identical on real cases.
Martin Dupont holds 25% of Vander Dynamics
At the legal UBO line, both frameworks agree. Martin appears in the UBO register. Z-CAT confirms him as an Ultimate Controlling Owner with a Power Index of 0.35. Two signals align.
Stake at the 25% legal threshold. Reportable in standard UBO registers.
Z-CAT confirms effective control. The Power Index quantifies it.
Martin Dupont reduces his stake to 20%
The capital structure around Martin is unchanged. The other institutional investors still hold the same stakes. The free float is still dispersed. Only Martin's direct holding has dropped, by 5 percentage points.
Stake now below the 25% legal threshold. Falls out of UBO registers.
Power Index moves from 0.35 to 0.28. Martin Dupont remains a confirmed Ultimate Controlling Owner. UBO screening now treats him as irrelevant; the Power Index keeps quantifying his real influence.
Martin Dupont's Power Index moves from 0.35 to 0.28. He remains a confirmed Ultimate Controlling Owner. What changes is his classification. UBO screening drops him below the line. The Power Index continues to quantify the influence he still exercises.
A 5-point move on the cap table. A binary flip on UBO. A material UCO on the other side.
Curious about your own portfolio, supplier base, or counterparty list?
Request a UCO Control AssessmentThree structural reasons control and ownership thresholds diverge
Martin Dupont's case is not an anomaly. It illustrates a structural property of how UBO frameworks were designed, and where they stop working as a proxy for real control.
Control depends on who else holds shares
A 20% stake is dominant in a fragmented capital. The same 20% stake is marginal next to a 50% holder. UBO frameworks ignore this context. The Power Index integrates it.
Control flows through chains. UBO frameworks do not always follow them
A shareholder controlling Company A, which itself holds 30% of Company Z, exercises real influence on Z without holding a direct stake. Indirect, cross-held, and circular ownership structures routinely fall outside UBO registries. Z-CAT resolves them.
Control is a continuum. UBO is binary
A move from 26% to 24% does not materially change a shareholder's influence. It changes their UBO classification. The Power Index measures the underlying reality, not the regulatory artefact.
UBO and UCO at a glance
A scannable summary of how the two frameworks differ on the dimensions that matter to compliance, AML, and risk teams.
Three contexts where the UBO blind spot creates real exposure
The structural divergence between UBO and UCO is not an academic point. It surfaces in recurring decisions that compliance, AML, and risk teams take every week.
Compliance and KYC
Identify control risks held by minority shareholders, affiliated structures, and dispersed positions that sit below reporting thresholds but still shape corporate behaviour. See the Compliance & KYC use case →
AML and sanctions screening
Detect circumvention routes where a sensitive actor influences a counterparty indirectly, without ever crossing a declarable threshold. Control paths matter where transactions alone do not.
Risk concentration and governance
Integrate control concentration and control shifts into issuer monitoring, third-party risk, and governance assessment, including under DORA and ICT third-party risk frameworks.
Research-grade methodology. Auditable output.
ZENO-Indices is a FinTech spin-off from HEC Liège, built on more than 20 years of academic research in corporate finance. The methodology underlying the Power Index has been referenced at IMF and G20 policy level.
Z-CAT, ZENO's proprietary engine, maps full ownership chains, resolves cross-held entities, and produces an interpretable Power Index designed for institutional use, not a binary flag.
The same approach has been applied to public-policy questions: read our analysis of Chile's lithium nationalisation →
See what your UBO process misses
Send us one entity, one portfolio, or one supplier base. We run a UCO Control Assessment and show you the shareholders that fall outside your current screening, together with the corresponding Power Index and control path.
Request a UCO Control Assessment →A short scoping conversation is enough to define the right perimeter. No data exchange before NDA. Prefer your own mail client? Write to contact@zeno-indices.com