3D Investing in Practice: Bain Capital Double Impact Fund III

Impact investing in private equity has grown rapidly in recent years, but finding investments that combine measurable impact with competitive financial returns remains a challenge. Bain Capital Double Impact Fund III demonstrates how these objectives can reinforce one another. The fund invests in established lower mid-market companies, primarily in North America, that improve healthcare, expand access to educational and workforce opportunities, and support climate solutions. By focusing on companies with proven business models rather than early-stage ventures, the strategy aims to generate attractive long-term returns while scaling positive societal impact. 

Building on a long-term relationship 

PGGM's relationship with Bain Capital Double Impact began in 2020, when the Private Equity team started expanding its sustainability-focused investment portfolio. At the time, impact investing was still an emerging market for institutional investors and many specialist managers had only limited track records.

Bain Capital offered a different proposition. Alongside its dedicated impact strategy, it brought the experience, network and operational capabilities of one of the world's leading private equity firms. This combination gave PGGM confidence that the fund could deliver meaningful impact without fundamentally changing the familiar private equity risk-return profile.

Following successful investments in earlier Bain Capital Double Impact funds, PGGM recently decided to invest in Fund III, building on a partnership that had developed over several years.  

Balancing return, risk and sustainability 
Bain Capital Double Impact illustrates how the three dimensions of PGGM's 3D framework come together in practice. The expected financial return is comparable to traditional private equity investments. 

The risk profile is equally important. The portfolio consists of companies with proven business models operating in sectors Bain Capital knows well. In addition, the wider Bain Capital platform provides operational expertise and access to specialist knowledge, strengthening both portfolio companies and investment decisions.

Bain Capital Double Impact focuses on equity investments of $50 to $200M+ million in opportunities where the team can partner with company management to deliver financial value alongside measurable social and environmental outcomes. These investments are aligned with PGGM's sustainability ambitions and support several Sustainable Development Goals (SDGs), including SDG 3: Good health and well-being, SDG 7: Affordable and clean energy, and SDG 8: Decent work and economic growth.

Turning ambition into investment decisions 
The investment decision was supported by extensive due diligence involving specialists across PGGM, including Risk, Legal, Operational Due Diligence and ESG. Financial analysis was combined with professional judgement, drawing on Bain Capital's track record, the strength of its investment platform and the experience gained through the long-standing relationship.

SDGs and Net Zero in practice
The companies supported by Bain Capital Double Impact contribute directly to several of PGGM's sustainability ambitions.

ConvenientMD, for example, operates urgent care and primary care clinics that improve access to healthcare, particularly in underserved communities. American College of Education provides affordable online degree programmes, helping educators advance their careers while making higher education more accessible and affordable.

In addition, Bain Capital Double Impact's portfolio companies measure and track GHG emissions, implementing measures to reduce emissions and decarbonise where feasible and economic.

Monitoring progress
PGGM continues to monitor the investment throughout the lifetime of the fund. Financial performance, sustainability progress and risk developments are reviewed regularly through portfolio monitoring, sustainability discussions and ongoing dialogue with Bain Capital.

The objective is not simply to measure results but also to identify opportunities for improvement. Continuous engagement helps both organisations learn from experience and further strengthen performance across all three dimensions of the 3D framework.

What this case demonstrates about 3D investing
Bain Capital Double Impact Fund III demonstrates that impact investing does not require compromising on financial discipline. By investing in established companies with proven business models, supported by an experienced private equity platform, the fund combines a familiar private equity risk-return profile with measurable contributions to better healthcare, improved educational opportunities and climate solutions.