Impact investors have made meaningful progress in measuring the reach of the solutions they finance.
We can increasingly quantify how many people are served, how quickly solutions are delivered, and where capital is flowing. What remains less developed is how to value quality. As the field pushes for broader access and greater scale, the more consequential question is whether the solutions being financed actually deliver meaningful benefits for the people they are intended to serve.
At The Vistria Group, we invest in sectors such as healthcare, education, financial services and housing, where long-term financial performance is inseparable from real-world outcomes. We therefore treat quality as a core investment consideration, not an abstract ideal. Across our portfolio, we evaluate the quality of our portfolio companies’ products or services through a combination of operational KPIs, customer feedback and internal benchmarking, allowing us to evaluate not just how many people are reached, but how well they are served.
In Vistria’s 2025 Impact Report, “Look Deeper,” we build on our impact underwriting and management approach: the Vistria Optimal Impact model. Anchored on access, scale, quality and outcomes, the model guides how we assess, optimize and manage investments. Of these four drivers, this year we shine a light on quality. Too often, it is overshadowed by access or scale. Yet without quality, solutions risk fragility. Quality can be the difference between temporary fixes and lasting progress.
The “Look Deeper” report shows why quality matters, especially in the US today. In healthcare, quality ensures vulnerable patients actually get healthier, not just treated. In education, quality instruction equips learners with real skills, not just credentials. In financial services, quality products protect households from cycles of debt while building pathways to stability.
Our report shows clear results from our focus on quality improvements, including an 18-point rise in customer Net Promoter Scores across our portfolio, a signal of differentiated performance and a proxy for quality and trust. We also saw portfolio companies demonstrate the results of their quality improvements, including more than doubling the number of lives saved in home health care between 2020 and 2024, based on internal analysis of patient health and safety outcomes following the implementation of enhanced care protocols during the investment period, a 12-point increase in student employment rates and a 25% increase in financial literacy program mentors.
These examples, drawn from case studies in the report, underscore how intentional efforts to enhance quality through active ownership translate into measurable outcomes. They strengthen systems, deepen trust and create durable enterprise value.
Limited partners are seeking greater clarity and rigor in how impact is managed. Look Deeper responds by showing how our model provides that discipline. It connects the drivers of impact value creation, such as quality, directly to investment strategy, operational execution and transparent reporting. In short, it provides a roadmap to optimal impact and value. This structured approach helps ensure impact performance is measurable, meaningful and comparable, and it reinforces credibility as expectations across the market continue to rise.
Active ownership is central to our approach. By working closely with portfolio companies to identify and execute initiatives that improve quality, such as expanding evidence-based care models, strengthening feedback loops between employees and management, or embedding customer insight into service design, we drive impact performance and business results together.
Quality is not just a measure of performance. Alongside access, scale and outcomes, it is a foundation for enduring impact, and it should be a crucial part of the field’s agenda.
Kelly McCarthy is Head of Impact for Vistria PRG. Mackenzie Turner is the Director of Impact for Vistria PRG.
Guest posts on ImpactAlpha represent the opinions of their authors and do not necessarily reflect the views of ImpactAlpha.
