The Private Equity Manager Who Built a Platform Around Operational Expertise

Private equity returns historically came from financial engineering. Buy companies using leverage, hold for a few years, sell at higher multiples. Sami Mnaymneh built HIG Capital on a different premise: operational improvements drive sustainable value creation in middle-market companies.

The approach proved prescient. As leverage multiples compressed and purchase price multiples expanded, firms relying primarily on financial engineering struggled to generate returns. HIG Capital’s operational focus positioned the firm for an environment where creating value required actual business improvement rather than just financial structuring.

Today, Mnaymneh serves as founder, executive chairman and CEO of a firm managing $70 billion across seven investment strategies. HIG Capital operates 19 offices worldwide and has invested in more than 400 companies since 1993. The firm’s current portfolio exceeds 100 businesses with combined revenues above $53 billion.

Early Pattern Recognition

Before launching HIG Capital, Mnaymneh observed patterns at The Blackstone Group. Large companies with sophisticated management teams and robust systems offered limited improvement potential. Returns came primarily from multiple expansion and leverage rather than operational transformation.

Middle-market companies presented different dynamics. These businesses often had weak management teams, limited financial systems and operational inefficiencies. Most investors viewed these characteristics as risks. Mnaymneh saw them as opportunities for investors with relevant capabilities.

However, capturing this opportunity required building different expertise than most financial buyers possessed. Creating value in middle-market companies meant working directly on business operations, not just optimizing capital structures.

Mnaymneh’s educational background prepared him for this approach. He graduated first in his class at Columbia University with a B.A. summa cum laude, then earned both a J.D. from Harvard Law School and an M.B.A. from Harvard Business School with honors. The combination provided tools for understanding both business operations and financial structures.

After starting his career at Morgan Stanley and working as a managing director at Blackstone, Mnaymneh partnered with Tony Tamer in 1993 to launch HIG Capital. The firm would target middle-market companies with enterprise values between $50 million and $500 million, focusing on operational value creation alongside financial engineering.

Building Operational Capabilities

HIG Capital distinguished itself through hiring decisions. Rather than recruiting exclusively from investment banks, the firm sought professionals with operating backgrounds. Many team members came from consulting firms like Bain & Company or from previous operational roles in portfolio companies.

This hiring philosophy reflected Mnaymneh’s belief that middle-market success required understanding business operations. Financial modeling skills remained essential, but so did the ability to diagnose operational issues, develop improvement plans and work with management teams on implementation.

The firm now employs over 500 investment professionals, many with experience beyond pure finance. This operational depth allows HIG Capital to work directly with portfolio companies on initiatives including sales force expansion, supply chain optimization, add-on acquisitions and management team strengthening.

The approach creates competitive advantages. Middle-market companies often lack internal resources for sophisticated operational improvements. Private equity firms providing both capital and operational expertise become more valuable partners than purely financial buyers.

Multi-Strategy Evolution

HIG Capital began as a traditional leveraged buyout fund but expanded into complementary strategies over three decades. The platform now encompasses private equity, growth equity, direct lending, real estate, infrastructure, special situations debt and growth-stage healthcare.

Each strategy addresses different middle-market opportunities. Growth equity targets businesses not ready for buyouts but needing capital to scale. Direct lending provides flexible debt as banks reduced middle-market lending. Real estate focuses on properties requiring operational improvements. Infrastructure targets essential service providers with predictable cash flows.

The diversified approach creates multiple advantages for limited partners. HIG Capital can deploy capital across strategies as opportunities evolve. During periods when equity valuations appear stretched, more capital flows to debt strategies. When debt markets tighten, equity strategies pursue opportunities.

Multiple strategies also generate more consistent cash flows than relying solely on buyout exits. Debt funds produce regular income through interest payments. Real estate and infrastructure generate periodic distributions. Buyout funds return capital through exits concentrated in later fund years. The combination smooths distributions over time.

Direct Lending Platform

WhiteHorse, HIG Capital’s direct lending arm, exemplifies successful strategy expansion. The platform launched to provide middle-market companies with flexible debt capital as banks retreated from lending following the 2008 financial crisis.

Post-crisis banking regulations made many middle-market loans less attractive for bank balance sheets. This created opportunity for alternative lenders willing to hold loans rather than syndicate them. WhiteHorse filled this gap with flexible terms, quick execution and competitive pricing.

The strategy proved successful. WhiteHorse has invested approximately $18 billion in 285 companies since inception. The platform closed its fourth fund at $5.9 billion in August 2025, one of the largest middle-market lending funds raised that year.

Fund IV targets senior secured loans to both sponsor-backed and non-sponsor borrowers with EBITDA between $30 million and $100 million. The lending platform competes with banks, business development companies and other direct lenders, differentiating through operational relationships developed across HIG Capital’s broader platform.

Direct lending has grown particularly attractive as interest rates have risen. Senior secured floating rate loans now offer returns in the high single digits to low teens while providing downside protection through senior positions in capital structures. The strategy appeals to institutional investors seeking current income with lower volatility than equity investments.

Investment Discipline

Mnaymneh maintains personal approval authority over all capital commitments HIG Capital makes. After 32 years and across $70 billion in assets, he reviews every transaction before the firm proceeds.

This centralized decision-making ensures consistency in investment criteria and risk management across the platform. It prevents individual teams from pursuing transactions that don’t align with firm-wide standards. The requirement forces rigorous due diligence and clear strategic rationale before committing capital.

The approach reflects lessons learned through multiple market cycles. Maintaining discipline during periods of market exuberance prevents overpaying for assets or taking excessive risks. Consistent investment criteria allow pattern recognition across hundreds of transactions.

However, centralized approval also creates potential constraints. Investment professionals must coordinate schedules to present opportunities. Time-sensitive deals may face delays if Mnaymneh is unavailable. Competitors with distributed authority can sometimes execute faster.

Three decades of results suggest the benefits outweigh the costs. The firm has grown substantially while maintaining this structure, indicating centralized approval hasn’t prevented capital deployment or constrained returns.

Geographic Diversification

HIG Capital operates affiliate offices across five continents. European locations include Hamburg, London, Luxembourg, Madrid, Milan and Paris. Latin American offices span Bogotá, Rio de Janeiro and São Paulo. Additional offices in Dubai and Hong Kong provide presence in the Middle East and Asia.

This geographic diversification serves multiple purposes. It provides access to deal flow beyond increasingly competitive U.S. markets. European middle-market private equity faces different dynamics, with different regulatory frameworks, financing structures and exit options.

Recent transactions demonstrate global reach. Investments in 2025 included companies across multiple European countries spanning sectors from waste management to occupational health services to aerospace logistics.

International expansion required building local teams rather than managing remotely. European deals involve different legal systems, tax structures, labor regulations and banking relationships than U.S. transactions. HIG Capital invested in developing regional expertise in each market.

The Latin American offices reflected early insight into emerging market opportunities. Miami’s proximity to the region provided advantages in building relationships and understanding local business dynamics. While Latin American private equity proved challenging for many firms, HIG Capital’s early commitment and local presence provided competitive advantages.

Performance Through Cycles

Mnaymneh and his team have managed through multiple economic downturns. The dot-com bust affected technology investments. The 2008 financial crisis created broad economic contraction and frozen credit markets. COVID-19 caused sudden revenue disruptions across many sectors.

Each cycle tested the firm’s investment approach and portfolio company management. The operational focus proved particularly valuable during downturns. Portfolio companies with strong management teams, efficient operations and healthy balance sheets weathered economic stress better than poorly managed competitors.

The middle market where HIG Capital operates demonstrated relative resilience through cycles. Smaller companies have limited access to public capital markets regardless of economic conditions, creating consistent demand for private capital. Competition intensified during boom periods but opportunities persisted during downturns.

This structural characteristic allowed HIG Capital to source opportunities throughout cycles. The challenge shifted from finding deals to selecting the right ones and creating value regardless of economic environment.

Recent Strategic Moves

HIG Capital continues evolving under Mnaymneh’s leadership. The firm recently announced plans to raise $1.5 billion for a vehicle focused on GP-led continuation funds, entering the growing secondaries market.

This strategy involves investing in continuation vehicles other private equity firms create to extend ownership of high-performing assets. As traditional exit markets have slowed, continuation funds have become popular liquidity mechanisms for both sponsors and limited partners.

To build this capability, HIG Capital recruited four executives from Morgan Stanley’s private equity secondaries team. Managing Director Dan Wieder leads the group, bringing decades of secondaries experience. The team will focus on middle-market continuation vehicles, investing at least $50 million in approximately 20 transactions.

The secondaries initiative represents opportunistic expansion into a growing market. Continuation funds accounted for 19% of private equity exits in the first half of 2025, up from 13% for all of 2024, according to Jefferies data. The growth reflects both limited traditional exit options and sponsors’ desire to retain ownership of valuable assets.

Current Market Dynamics

The private equity industry faces headwinds entering 2026. Interest rates remain elevated compared to the 2010s, increasing borrowing costs and reducing leverage multiples that historically amplified returns. Exit markets have slowed as both strategic buyers and public markets show restraint.

These conditions create performance pressure across the industry. Private equity has traditionally relied on multiple expansion and financial leverage to generate returns. With purchase price multiples near historical peaks and debt more expensive, operational improvements must carry greater weight in value creation.

This environment potentially advantages firms like HIG Capital that emphasized operational value creation from inception. Companies that already built capabilities for working directly on business operations may adapt more easily than firms that relied primarily on financial engineering.

The middle market where HIG Capital operates faces somewhat different dynamics than large-cap transactions. Smaller companies have limited access to public capital markets, creating consistent demand for private capital regardless of broader conditions. Competition remains intense but perhaps less extreme than for mega-deals attracting numerous large funds.

Portfolio Activity

HIG Capital’s transaction activity demonstrates the range of opportunities the firm pursues. Recent investments have included destination management companies, cloud technology providers, revenue cycle management services, home warranty businesses and cruise excursion operators.

The firm has also completed several portfolio company exits. Sales in 2025 included Soleo Health to Court Square Capital and WindRose Health Investors, SoldierPoint Digital Health to GovCIO and United Flow Technologies to Berkshire Partners.

Exit timing depends on portfolio company development and market conditions. Extended holding periods have become common as traditional exit markets have slowed. Many private equity funds now hold portfolio companies seven years or longer, compared to historical averages of four to six years.

Extended holding periods require different approaches to value creation. Firms must continue driving operational improvements and growth initiatives beyond typical timeframes. Portfolio companies need capital for additional acquisitions or investments to sustain momentum.

Leadership Continuity

Mnaymneh and Tamer remain actively involved more than 30 years after founding HIG Capital. This longevity distinguishes them from many private equity founders who step back earlier.

The firm has developed senior management across regional offices and strategy-specific funds. Managing directors operate with substantial autonomy, though Mnaymneh retains ultimate approval authority. This structure balances operational independence with centralized oversight.

HIG Capital has not publicly addressed succession timing or specific transition plans. However, the depth of leadership talent suggests preparation for eventual change. Whether transition occurs gradually through delegation or more abruptly remains unclear.

Succession planning presents challenges for private equity firms. Founders often establish distinctive investment approaches and organizational cultures that prove difficult to maintain through leadership changes. Balancing continuity with necessary evolution requires careful planning and execution.

Institutional Confidence

Private equity firms rarely disclose detailed performance metrics. However, certain indicators suggest HIG Capital has delivered competitive returns. The firm successfully raised successively larger funds over three decades, indicating limited partners remained satisfied with results.

The ability to attract $5.9 billion for a single lending fund demonstrates institutional confidence. Pension funds, endowments, insurance companies and sovereign wealth funds conduct extensive due diligence before committing capital. Large allocations reflect conviction in both strategy and execution capability.

Current portfolio scale also indicates sustained success. Managing over 100 active investments with combined revenues exceeding $53 billion requires consistent deal flow and effective portfolio management. The firm must generate sufficient exits to return capital while maintaining steady deployment.

Looking Forward

As HIG Capital approaches its 35th anniversary, several questions loom. Can the firm continue growing? How will succession unfold? Will the operational focus remain advantageous as market conditions evolve?

The current environment potentially favors firms emphasizing operational value creation. With financial engineering contributing less to returns, firms capable of driving business improvements may generate superior performance.

HIG Capital’s multi-strategy approach provides flexibility. The firm can shift capital allocation across strategies as opportunities evolve. Direct lending offers attractive returns in high-rate environments. Buyout opportunities may emerge as valuations adjust. Real estate and infrastructure provide diversification.

The platform Mnaymneh built over three decades appears positioned to navigate changing conditions. Whether it continues thriving depends on execution, market dynamics and eventually leadership transition.

For now, the executive who built a firm around operational expertise rather than pure financial engineering continues leading one of private equity’s most active middle-market platforms. The bet made in 1993 on operational value creation has delivered results that appear increasingly relevant in today’s market environment.