• LSEG introduces a new ESG scoring system built on 220 standardized indicators and aligned with ISSB, GRI, SASB and ESRS frameworks.
• The framework covers 16,000 companies representing more than 90% of global market capitalization and 99% of the FTSE All World index.
• Modular “Plus” overlays add insights on controversies, sovereign risk and green revenue signals to strengthen sustainable finance analysis.

London Stock Exchange Group (LSEG) has launched a new suite of ESG scores and sustainability analytics aimed at improving transparency, comparability and analytical depth for financial institutions navigating rapidly evolving sustainability regulations.

The new framework, introduced through LSEG Sustainability Ratings and Data, is designed to help investors, banks and corporate advisers integrate ESG insights directly into financial decision making. The system offers standardized metrics, a redesigned materiality model and modular scoring layers intended to make sustainability data easier to interpret across investment, lending and advisory workflows.

Financial markets are facing mounting regulatory pressure to ensure ESG claims are credible and defensible. Institutions must also embed sustainability considerations into automated decision systems and AI driven analytics. LSEG’s new framework attempts to address both challenges by providing a rules based scoring system built on clearly defined data inputs rather than subjective analyst judgement.

Built Around Global Sustainability Standards

The methodology behind the new ESG scores is aligned with leading international sustainability frameworks, including those developed by the International Sustainability Standards Board (ISSB), the Global Reporting Initiative (GRI), the Sustainability Accounting Standards Board (SASB) and the EU’s European Sustainability Reporting Standards (ESRS).

Unlike traditional ESG ratings, which often incorporate qualitative assessments by analysts, LSEG’s scores rely on transparent calculations based on structured data indicators. The company says this approach improves auditability and helps financial institutions justify sustainability decisions to regulators and stakeholders.

At the core of the framework is a curated set of 220 standardized indicators covering environmental, social and governance performance. These indicators feed into a sustainability-first materiality matrix that combines an updated industry classification with a double materiality approach applied at the business segment level.

Companies are evaluated across 12 ESG themes that are aggregated into three broader pillars and ultimately an overall ESG score. Each company receives a score on a scale from 0 to 5, ranging from limited awareness of ESG issues to industry leadership in sustainability performance.

The scoring model introduces threshold based scoring levels and performance analytics designed to reward companies that demonstrate measurable sustainability progress and strategic ESG integration.

Modular “Plus” Layer Adds Risk And Impact Insights

To complement the core scoring system, LSEG has introduced an additional analytical layer known as “Plus,” which provides deeper insight into sustainability risks and positive environmental contributions.

These overlays incorporate data on controversies, sovereign ESG risks and indicators of positive environmental impact, including revenues linked to green activities and sustainable financing instruments. Investors can apply these overlays without altering the core ESG scoring framework, allowing for flexible analysis depending on the use case.

The modular design reflects growing demand from asset managers and banks for customizable sustainability analytics that can be adapted to different regulatory environments and portfolio strategies.

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Integrated Into LSEG’s Financial Platforms

The new ESG scores and sustainability analytics are integrated across several LSEG platforms, including its flagship LSEG Workspace. The platform combines financial data, analytics and workflow tools used by investment professionals around the world.

By embedding ESG scores directly into these systems, LSEG aims to ensure sustainability data can be accessed alongside financial metrics within everyday decision making processes.

“Our customers are consistently looking for sustainability insights they can explain, justify and integrate across the investment, lending and advisory lifecycle,” said Elena Philipova, Director of Sustainability Solutions at LSEG.

“By uniting 25 years of sustainable finance expertise, with datasets trusted by the global financial industry, we’re giving financial institutions the clarity and confidence to meet regulatory expectations, support transition-aligned capital allocations and build AI-ready ESG workflows.”

Implications For Investors And Global Markets

The scale of LSEG’s sustainability data infrastructure underscores the potential reach of the new scoring system. The firm maintains more than 2,000 ESG data points across approximately 16,000 companies that collectively issue more than one million fixed income instruments.

This dataset covers over 90% of global market capitalization and 99% of the FTSE All World index, positioning the framework as a significant reference point for investors and financial institutions assessing sustainability performance.

As global regulators tighten scrutiny of ESG disclosures and sustainable investment claims, demand for transparent and standardized data is rising quickly. Financial institutions are increasingly expected to demonstrate how sustainability considerations influence capital allocation decisions and risk management frameworks.

By combining standardized indicators, a double materiality model and modular risk overlays, LSEG is positioning its ESG analytics platform as a tool for integrating sustainability into mainstream financial analysis.

For global investors and corporate leaders, the shift reflects a broader evolution in sustainable finance: ESG data is moving from a peripheral reporting function into the core infrastructure that guides capital flows across global markets.

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