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Vermiculus launches configurable corporate-action processing through VeriAct

Event sequencing, tax rules and account-level calculations are the operational focus of a product that can run alongside existing market infrastructure.

Vermiculus has launched VeriAct as a configurable corporate-action processing product, giving exchanges, clearing houses and securities depositories a route to change event logic without a bespoke coding project for each new event type. The 6 October announcement says B3 is among its users and makes the system available separately or with Vermiculus’s wider infrastructure products.[1]

VeriAct’s product sheet describes event setup, entitlement calculations and distribution to connected systems. Events can arrive from a source system or be entered manually, remain preliminary while terms change, and then move through their processing lifecycle.[3]

Its event chains are particularly relevant where one change affects the calculation of another. Consider a hypothetical share split followed by a cash distribution: the position basis and applicable event terms must determine which quantity enters the next calculation. Treating the two instructions as unrelated jobs could produce a plausible-looking but incorrect account entitlement. This is an illustration of the sequencing problem, not a reported client incident.

Vermiculus says VeriAct orders events according to their configured dependencies. Official calculations use actual positions and can produce account and sub-account results for a record date; simulations can use theoretical positions across an event chain. Tax calculations can reflect the asset, event, investor category and tax domicile, with exceptions configured explicitly.[3]

For an operator, separating simulation from official processing makes it possible to inspect an event’s consequences before distributing account results. The control question is whether the approved formulas, rounding treatment, positions and tax data reproduce the intended legal entitlement. Configuration changes the way those instructions are implemented; it still requires a governed decision about what the instructions should be.

Deployment can be in the cloud, on premises or in a hybrid arrangement, according to the product page. Message-based integration allows the system to work with surrounding infrastructure. This supports a narrower replacement project where an operator wants to change corporate-action processing while retaining other trading or depository components.[2]

Although the launch uses the AI label, the disclosed controls are concrete: visible outcome logic, traceable calculations and an operational route for handling exceptions. The product sheet also describes notifications in ISO-standard or local formats. The commercial case will depend on how reliably these outputs reach participants’ existing systems, including brokers that must update customer holdings and cash balances.[1][3]

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Sources & further reading

  1. VeriAct corporate-action system product sheet Vermiculus · Accessed 21 Oct 2026

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