Sum of the Parts

A sum-of-the-parts valuation values a group by valuing its individual business units separately and then adding them together. Each unit is treated as if it stood on its own. This shows whether the sum of the parts is worth more than the group as a whole.

The work proceeds in stages: separate earnings figures are determined for each unit, appropriate multiples from comparable companies or transactions are assigned or a separate cash flow model is built, the individual values are added, and holding company costs, non-operating assets, holdings below the control threshold and net financial debt are then taken into account. A conglomerate discount is often applied, reflecting that capital markets value a combination of different businesses lower because management is less transparent, investors cannot select specific exposures and capital may not be allocated optimally between units. The method matters in three contexts: valuing diversified companies, preparing spin-offs and divisional sales where it makes the potential gain visible, and in the arguments of activist investors calling for a break-up. Its limits lie in allocating shared resources and central costs. It is used above all for groups with several markedly different divisions and requires reliable segment reporting, because without separate earnings figures per unit the individual values cannot be derived credibly.