FINBOURNE and LSEG extend partnership to deliver integrated fixed income analytics
London, 5 November 2025 – FINBOURNE Technology, a provider of cloud-native data and investment management solutions, today announced a strategic expansion of its partnership with the London Stock Exchange Group (LSEG) to integrate LSEG’s Yield Book fixed-income data and analytics into FINBOURNE’s LUSID platform.
Building on LSEG’s 2021 adoption of LUSID and strategic investment in FINBOURNE, the integration will enable asset managers to access Yield Book’s trusted and authoritative fixed-income analytics – covering government and corporate bonds, US municipal bonds, mortgages, asset-backed securities, and derivatives – to perform in real time, complex prepayment modelling, loss severity modelling and extensive fixed income analytics directly within their existing LUSID portfolio management system. The integration launches in Q2 2026, with the first client already scheduled to go live.
This integration builds on our existing collaboration with FINBOURNE and marks a significant step forward for LUSID users. With Yield Book, clients will have access to LSEG’s sophisticated analytics capabilities and extensive market-leading data offering them a key advantage in navigating today’s financial markets.
Emily Prince
Group Head of Analytics and AI at LSEG
We are excited to extend our partnership with LSEG through the integration of Yield Book. This development allows our clients to combine LSEG’s high-quality data and analytics with the flexibility of our LUSID platform, enhancing speed, accuracy, and transparency across their investment processes.
Paul Carr
Global Head of Partners at FINBOURNE Technology
About FINBOURNE Technology
FINBOURNE Technology structurally reduces the cost of investing by modernising financial data infrastructure – eliminating the 40% productivity gap from legacy systems. We solve underlying data challenges: reconciliations, data quality issues, and legacy infrastructure that create operational risk.
Our cloud-native platform unifies real-time data across public and private assets with complete lineage, connecting front-to-back workflows from portfolio and order management to IBOR, shadow accounting, NAV accounting, and reconciliation – without disrupting existing systems. Trusted by Fidelity International, Alchelyst, and Northern Trust, FINBOURNE eliminates data silos and accelerates time-to-market for new products.
With bi-directional connectivity to existing ecosystems – data stores, business apps, custodians – you integrate on your terms. Our modular architecture enables firms to retire legacy systems and power audit-ready, AI-driven innovation.
About LSEG
LSEG is a leading global financial markets infrastructure and data provider, playing a vital social and economic role in the world’s financial system. With our open approach, trusted expertise and global scale, we enable the sustainable growth and stability of our customers and their communities. We are dedicated partners with extensive experience, deep knowledge and a worldwide presence in data and analytics; indices; capital formation; and trade execution, clearing and risk management across multiple asset classes. LSEG is headquartered in the United Kingdom, with significant operations in 65 countries across EMEA, North America, Latin America and Asia Pacific. We employ over 26,000 people globally, more than half located in Asia Pacific. LSEG’s ticker symbol is LSEG.
Media Contact:
Laura Morrison, finbourne@aspectusgroup.com
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