About This Fund
New Mountain Strategic Equity Fund I, L.P. (SEF I) is the inaugural non-control private equity fund raised by New Mountain Capital, a leading New York-based alternative asset manager with approximately $60 billion in assets under management. SEF I closed in 2020 with approximately $640 million of capital commitments, establishing New Mountain Capital's strategic equity platform as a distinct investment strategy alongside the firm's flagship buyout and credit vehicles.
The fund is dedicated to minority, non-control investments in founder- and sponsor-backed businesses across New Mountain Capital's core thematic focus areas, including infrastructure services, life sciences and advanced materials, healthcare technologies, advanced data and analytics, software, financial and insurance services, and technology-enabled business services. Unlike the firm's buyout funds, SEF I operates without seeking operational control, instead partnering with management teams and sponsors to provide capital and operational resources in a collaborative structure designed to preserve entrepreneurial leadership and accelerate growth trajectories.
SEF I was the proving ground for a strategy that went on to raise an oversubscribed successor fund. The fund's performance and investor reception directly led to the formation of New Mountain Strategic Equity Fund II, which closed in January 2026 at $1.2 billion — an 88% increase over SEF I — reflecting sustained institutional confidence in the non-control strategy. SEF I is managed within New Mountain Capital's strategic equity team, which applies the same sector-research discipline and business-building philosophy that defines the broader firm platform.