Evaluation of the Effectiveness of Strategic Consulting Firms of the MBB Group (McKinsey, BCG, Bain) in value creation in portfolio companies after private equity acquisitions

This thesis focuses on evaluating the effectiveness of MBB consulting firms (McKinsey, BCG, Bain) in the transformation processes of portfolio companies acquired by private equity funds. The aim of the thesis is to design and validate an evaluation model that quantifies the contribution of these interventions. The theoretical part reviews the literature on private equity, post-acquisition transformation, and the role of strategic consulting. Key financial, operational, and organizational indicators are defined as the foundation of the model. The practical part is dedicated to constructing a weighted framework and applying it to selected case examples. The model combines indicators such as EBITDA growth, revenue growth, margin expansion, and cost savings. It also incorporates operational metrics, including process improvements, digitalization, and the retention of key management. The outcome is a framework that demonstrates the extent to which MBB consultants contribute to value creation. The thesis provides academic value by complementing the literature with an evaluation model, as well as practical relevance for private equity investors in their decision-making processes.