Willis Shares Plunge as Global Risk Expansion Drives Mid-Tier Trading Volume

On September 9, 2025, , , ranking 461st in market activity. The decline followed the company’s announcement of a strategic expansion into global risk engineering, aimed at enhancing its risk analytics capabilities through a newly established team. This initiative consolidates engineering expertise across 30 countries, targeting improved client resilience and cost-of-risk optimization.

The Global Risk Engineering team, leveraging proprietary data and advanced analytics, aims to deliver tailored solutions for both single-site and portfolio-level risk assessments. , the unit combines localized knowledge with global insights, positioning Willis to address emerging risks such as ESG compliance and climate challenges. , head of Risk Control & Claims Advocacy, emphasized the move as a “significant step forward” in delivering data-driven value to clients.

Analysts suggest the expansion aligns with Willis’s broader strategy to strengthen its market differentiation in risk management. By integrating multidisciplinary expertise with technology-enabled tools, the firm seeks to improve client decision-making and resilience. However, the stock’s performance remains under pressure amid broader market volatility and sector-specific challenges.

To run this back-test accurately, I still need a couple of details: 1) Market universe (e.g., U.S.-listed shares), 2) Trading convention (e.g., 1-day hold), and 3) Frictional costs (e.g., commission). Let me know, and I’ll build the retrieval plan and execute the back-test.