Why APAC Sell-Side Firms Are Adopting the Buy-and-Build Model

For years, APAC brokers have grappled with a tradeoff in how they invest in trading technology: adopt a monolithic, single-vendor platform and sacrifice flexibility, or build in-house and take on the cost, complexity, and ongoing maintenance required to support it.

According to Boston Consulting Group, 65% of digital transformations fail to meet their objectives, often because firms take an “all-buy” or “all-build” approach rather than aligning investment with where they truly differentiate. In today’s trading environment, the “Buy vs. Build” model is no longer sufficiently nuanced.

Instead, firms are moving toward a buy-and-build approach, one that allows them to retain control over the components that define their competitive edge while leveraging external partners to simplify and scale the broader trading stack.

What’s Driving the Shift on the Sell Side

Today, Asia’s trading environments are highly fragmented across countries, venues, local regulations, and workflows. Each market has distinct microstructure characteristics, including end-investor identification, tick sizes, lot sizes, trading calendars, currencies, and off-exchange trade reporting, requiring brokers to maintain market-specific connectivity, risk checks, and post-trade processes.

This level of fragmentation introduces significant operational complexity and creates friction across the trade lifecycle, constraining straight-through-processing. When combined with ongoing cost pressure and market uncertainty, firms are forced to re-evaluate how they structure their technology investments, especially when it comes to turn-around time for addressing the dynamic nature of change in these markets.

Fully in-house builds offer control and differentiation but require significant investment in development resources and long-term maintenance. A purely “buy” approach, on the other hand, limits a firm’s ability to retain ownership of the components that establish its edge and responsiveness.

As a result, firms are increasingly prioritizing flexibility. Many are internalizing mission-critical components such as advanced algo suites, fast gateways, and client-facing functionality, while outsourcing more commoditized workflows to trusted technology partners.

This shift is already evident across Tier-1 banks and brokers in the region. As FlexTrade’s James Hammond notes, “across multiple Tier-1 engagements, we’ve seen these firms actively decouple their stacks, taking back ownership of the components that drive differentiation while plugging in vendor modules for the rest.”

In practice, this is driving a move toward component-based, hybrid architectures that evolve incrementally rather than requiring a full “rip and replace.” Instead of relying on a single vendor to control the entire trading stack, firms are building integrated, modular environments where each layer can be sourced internally, from a single vendor, or across multiple vendors depending on their strategy.

Simplifying Architecture through Buy-and-Build

Supporting this model requires technology partners to be able to support the full sell-side environment across asset classes and desks; while allowing firms to adopt only the components they need and integrate them seamlessly into their broader architecture.

At the same time, firms are not only looking for flexibility but also simplification. As Rajiv Kedia, Principal and Associate Founder of FlexTrade, notes, banks are increasingly trying to rationalize their technology architecture by reducing operational friction while maintaining the ability to build around their differentiating components.

Rather than stitching together multiple disconnected systems, firms are looking for a strategic partner that can support multi-asset trading and provide the full range of capabilities, from OMS and middle office to FIX connectivity, risk management, smart order routing, and algos, within a single, interoperable framework.

As Kedia explains, “the challenge is finding the right partner with modular components who is willing to understand the firm’s needs and deliver a customized solution that is simpler, more manageable, and more user-friendly.”

In this model, the technology provider acts less as a single-system vendor and more as an extension of the firm’s own development team. By combining internal development with modular, vendor-supported components, firms can simplify legacy complexity, improve STP, maintain control over their intellectual property, and scale their trading operations in line with evolving market demands.

As cost pressures persist and Asian trading environments continue to grow in complexity, this approach is becoming the standard operating model – allowing firms to adapt, scale, and differentiate without the constraints of traditional, monolithic systems.

Learn More about FlexTrade’s OMS Solution: FlexOMS