For years, financial institutions have poured resources into market connectivity, wiring up new venues, expanding execution infrastructure and chasing liquidity wherever it emerges. Success has traditionally been measured in reach and speed.
But a harder question is now surfacing: how many trading venues can a single person actually understand, navigate and control, asked Corlytics.
Corlytics recently discussed the power of 400 trading venues, and one human brain.
Many firms today operate across hundreds of venues, each with its own interface, terminology, workflows and rulebook. The industry has long treated this as a technology problem, if a venue can be connected, the job is considered done. Connectivity, though, was only ever the first hurdle.
The real difficulty begins after the connection is made. Every additional venue brings a fresh set of operating assumptions for traders, compliance teams, risk managers and operations staff to absorb. The task facing firms is no longer about linking to hundreds of venues. It is about turning hundreds of different ways of working into one operating model people can actually use.
Individually, each new venue looks manageable, perhaps a different screen or a slightly altered workflow. But organisations don’t operate on one venue, they operate on hundreds, and small variations compound into serious complexity. The so-called “400-screen problem” is really a human one: people are not built to process hundreds of unrelated operating environments at once.
When a trader carries out the same economic activity across multiple venues but faces different terminology, execution mechanics and compliance obligations each time, attention drifts from the trade itself towards simply remembering how the venue works. Working memory fills with process instead of decision-making, onboarding slows, specialist dependency grows, and the risk of rule breaches or control failures rises.
The burden extends beyond the trading desk. Rulebooks change, market access requirements evolve, and surveillance models and training materials must be continually updated, work that is largely manual, invisible in technology budgets, and increasingly unsustainable as venue numbers climb.
The industry’s next challenge, therefore, is not more connectivity but more intelligence. Rather than expecting professionals to master the nuances of hundreds of venues, firms need systems that absorb that complexity instead, monitoring rulebooks, flagging changes and mapping them to existing controls automatically. The aim is not to remove human judgement, but to strip out unnecessary cognitive load.
The most effective trading environments were never defined by the most screens or data feeds, but by how well they simplify decision-making. Success will not be measured by connectivity to 400 venues, but by the ability to turn 400 different venue experiences into a single trusted mental model, arguably the industry’s next real competitive edge.
Read the full Corlytics post here.
Copyright © 2026 RegTech Analyst
Copyright © 2026 RegTech Analyst
