BDC Portfolio Concentration Analysis 2025

Concentration risk is one of the most underappreciated dynamics in the BDC market. When multiple business development companies lend to the same borrower, a single default can ripple across multiple portfolios simultaneously. This report examines the extent of borrower overlap across 11,091 distinct companies held by 43 publicly traded BDCs, totalling $26.9B in aggregate fair value.

Our analysis reveals that 658 borrowers appear in at least two BDC portfolios. While diversification is a core principle of credit portfolio construction, the practical reality is that many BDCs draw from the same pool of middle-market borrowers. This creates hidden correlations that standard portfolio metrics may not capture.

For institutional investors evaluating BDC allocations, understanding which names are shared across vehicles is essential for managing aggregate exposure. A pension fund holding three BDCs may unknowingly have triple exposure to the same underlying credits. This analysis provides the transparency needed to make informed allocation decisions.

Implications for Investors

The concentration patterns revealed in this data carry several practical implications. First, investors building multi-BDC portfolios should cross-reference underlying holdings to avoid unintended concentration. Second, sectors with high overlap rates may represent crowded trades where competitive dynamics could compress spreads or loosen covenants. Third, in a stress scenario, correlated defaults across multiple BDC portfolios could amplify losses beyond what single-portfolio analysis would suggest.

The private credit market has grown substantially over the past decade, with BDC assets expanding faster than the pool of quality middle-market borrowers. This supply-demand imbalance naturally leads to greater portfolio overlap. Monitoring this overlap over time provides an early warning signal for credit cycle dynamics.