Explanation

Mezzanine debt is expected to be the riskiest among the three types of private debt mentioned. Here's why:

1. Mezzanine Debt: This is a hybrid form of financing that combines debt and equity characteristics. It is typically:

   • Subordinated to senior debt in the capital structure
   • Has higher interest rates to compensate for higher risk
   • Often includes equity warrants or conversion features
   • Used for growth financing, acquisitions, or buyouts
   • Carries higher default risk than senior debt

2. Infrastructure Debt: This is debt financing for infrastructure projects (roads, bridges, utilities, etc.). It tends to be:

   • More stable and predictable due to long-term contracts or regulated returns
   • Often backed by tangible assets with predictable cash flows
   • Lower risk due to essential nature of services

3. Senior Direct Lending: This is senior secured lending directly to companies, typically:

   • Highest priority in the capital structure
   • Secured by collateral
   • First claim on assets in case of default
   • Lowest risk among the three options

Risk Hierarchy:

1. Highest Risk: Mezzanine debt (subordinated, higher yield)
2. Medium Risk: Infrastructure debt (stable but project-specific risks)
3. Lowest Risk: Senior direct lending (senior secured position)

Mezzanine debt investors accept higher risk in exchange for potentially higher returns through interest payments and equity participation.