Sum-of-the-parts valuation: how to break a holding company into segments without paying twice

Sum-of-the-parts valuation (SOTP) is a way of valuing a company not as a whole but piece by piece: each business inside the group is valued separately by the method that suits it, the results are added up, and then everything that belongs to the group as such is deducted from the total — net debt, the cost of running the corporate centre, and the minority interests in subsidiaries. The method is used where a single multiple for the whole group stops meaning anything: inside one issuer sit businesses with different economics, different growth rates and a different price of risk, and an averaged valuation describes not one of them.

When the method is justified and when it is wasted effort

Breaking a company into parts makes sense in three typical situations. The first is a holding company where one share covers a bank, a retailer, a telecoms operator and a property developer: the market does not know how to apply a common multiple to such a mix. The second is a company whose core business is mature while next to it grows a division with fundamentally different dynamics, and its contribution gets lost in the consolidated accounts. The third is an expected reorganisation: a spin-off, the sale of a segment, the IPO of a subsidiary. It is for exactly this kind of outcome that SOTP is most often calculated — it gives a benchmark for what the part about to be separated is worth.

If, however, the company has one clear business, the method will only add assumptions. In that case it is more honest to look at comparable transactions — the glossary has a separate entry on this approach: precedent transaction valuation.

The order of the calculation

Step 1 — identify the segments. The basis here is not common sense but the notes to the consolidated financial statements: the company itself discloses its operating segments, their revenue and their result. Everything that is not disclosed you are valuing blind, and that should be said out loud. The financial statements of Russian issuers are collected in the company reports section.

Step 2 — choose a method and a base for each segment. It is logical to value a banking division on its equity or its earnings, applying the multiple of a comparable listed stock: for example, 3,77 for {{instrument:SBER}}. An infrastructure or commodity segment is valued on operating profit before depreciation and amortisation. A young, loss-making division is valued on revenue or on the value of its assets. The whole point of the method is that the parts have different bases.

Step 3 — add up the segment valuations to obtain the value of the operating business.

Step 4 — deduct the group's net debt and the capitalised costs of the corporate centre. The management company brings in no revenue but consumes cash every year, and its upkeep is a negative figure in your total.

Step 5 — adjust for non-controlling interests. If the group consolidates a subsidiary without owning all of it, not all of that subsidiary's valuation in the sum of the parts belongs to you.

The holding company discount: why the sum of the parts and the market price diverge

Having calculated SOTP, an investor almost always finds that the market pays less for the share than the total obtained. This is not necessarily a market error. The gap is explained by the holding company discount: a minority shareholder owns not the segments but the paper of the management company, and has no control over the parts. They pay for the corporate centre, depend on the majority shareholder's decisions on how cash is allocated between divisions, bear the tax costs of intra-group transfers and have no way of selling separately a segment they happen to like.

The discount narrows when a mechanism for unlocking it appears: an announced spin-off, the sale of a non-core asset, a move to a transparent dividend policy. Without such an event, an SOTP calculation describes fair value, not the future price — the difference between these concepts is examined in the article price and value of a company.

What breaks the calculation

Currency structure. If the segments earn in different currencies while the debt is denominated in one, adding them up mixes things that are not comparable, and the group's reported result is distorted by foreign-exchange revaluation — a paper revaluation of liabilities that has nothing to do with the operating performance of the segments.

Opaque segmentation. Companies disclose their operating segments in the way that suits management, and the boundaries may not match the economic logic of the business.

Stale comparables. The multiple of a comparable listed company is the price of today's market, not a property of the industry. The list of traded securities from which to pick comparables is in the stocks section; upcoming corporate outcomes are conveniently tracked through the events calendar, and the cash flow to the shareholder through the dividend calendar: {{dividend_calendar|limit=5}}.

A separate caveat: the platform provides financial statements and quotes, but it does not calculate the sum of the parts automatically — you do the segment breakdown and the selection of comparables by hand, and the quality of the result is determined by those assumptions, not by the arithmetic of addition.

Definitions of related concepts are collected in the glossary.