In the early hours of market turbulence, when retail investors are scrambling to respond, it’s not volatility that fails them: it’s infrastructure. In the past, we’ve repeatedly seen investing technologies buckle under pressure during moments of peak market stress.
During times of high demand, many platforms might struggle to maintain uptime. In recent weeks, as Trump’s tariffs announcements saw retail trading volumes surge, some of the world’s biggest trading platforms went dark. These responses to market volatility are not outliers: they are predictablestress tests. Market volatility correlates strongly with spikes in trading volume. A study by the European Central Bank found that liquidity shocks consistently drive increases in trading activity, especially in frequently traded assets. Platforms should expect and be designed for these surges.
Yet time and again, outages occur at precisely the moments when retail investors and advisers need control. In these moments, investors don’t merely lose access, they lose confidence.
Trading Platform Infrastructure
A 2024 poll found that 30% of UK banking customers would consider switching providers following a technology failure. Among 25-34 year olds, this figure jumps to 57%. For trading platforms (and their technology providers) trust is hard-won and easily lost. Operating in a financial market characterised by risk, investment infrastructure resilience is no longer a “nice-to-have”. It is a strategic necessity.
According to McKinsey, global assets under management in private markets grew to $13.1 trillion in 2023. In the UK, over a third (39%) of adults are actively investing and the number is growing, thanks in part to government-led market reforms. As trading volumes increase, retail investors need infrastructure that doesn’t flinch under pressure. So what does this look like in practice?
First, elasticity is essential. Systems must be able to scale to meet demand spikes. When trading activity spiked following Trump’s tariff announcement, Upvest experienced the highest trading volumes in our history. Our platform scaled exactly as it was designed to do, enabling millions of Europeans to seamlessly trade and invest in thousands of instruments with zero downtime. At times of volatility, “stability as a service” emerges as a key competitive differentiator.
Second, build for failure. The leading question in our conversations with clients is no longer “can you add this feature?”, it’s “can you guarantee uptime under pressure?” Financial institutions need to know that trading can continue in volatile conditions. Infrastructure providers must build with this in mind and leverage modular systems – where trading, settlement, and custody run independently – to reduce the risk that a single point of failure cascades across an entire platform. Decentralised services improve incident isolation and, in a digital-first financial ecosystem, reliable infrastructure that remains operational even when pressure peaks is the foundation of investor empowerment.
Observability is also key. Real-time monitoring allows operations and tech teams to anticipate issues before they become outages. This means constantly tracking latency, error rates, and system health, as well as regularly simulating and stress-testing for high volume scenarios to ensure systems can perform under extreme load. These synthetic tests mimic real-world event spikes and ensure you can deliver under pressure.
Finally, communicate transparently. When issues arise, investors deserve clear metrics on uptime and response windows. Public dashboards and incident post-mortems are no longer optional, they’re foundational to trust. At Upvest, for example, API Status is always available online so our clients can see whether we’re experiencing any issues.
Future Resilience
These steps are no longer operational best practice: they’re a necessity. The investment industry must move beyond treating volatility as an edge case and start building resilience into platforms as a priority. Retail investors don’t judge their investment providers during periods of calm, they judge them in crisis. When the market wobbles, infrastructure is the differentiator. That’s when confidence is earned and financial empowerment starts to happen.
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