Due Diligence — Research by consultants, law firms, etc. adds no value in private equity, Says Study

We estimate the economic value of due diligence (DD) in the context of private equity by investigating the relationship between DD and investee performance, while controlling for endogeneity. With the adoption of a novel dataset, we find evidence highly consistent with the view that a thorough DD is associated with improved investee performance. We also distinguish the role of different types of DD and show that the DD performed by fund managers has a more pronounced impact on performance. Instead, the DD mainly performed by external agents, i.e., consultants, lawyers and accountants, gives rise to puzzling results and imperfect matching.

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