Sum-of-the-Parts Valuation (SOTP)

Sum-of-the-parts (SOTP) valuation, also called break-up analysis, values a diversified company by separately valuing each distinct business segment, asset, or division and then summing those values to derive the total enterprise value. This approach is used when a company operates in multiple industries or has distinct businesses that would be valued differently by the market on a standalone basis.

The methodology involves: (1) identifying each distinct business segment from SEC filings (segment reporting under ASC 280); (2) assigning appropriate valuation multiples to each segment based on comparable pure-play companies in that industry; (3) valuing corporate assets separately (real estate, investments, cash, intellectual property); (4) subtracting corporate overhead costs (the "conglomerate penalty"); (5) subtracting net debt to arrive at equity value. For example, a conglomerate might own a software business (valued at 15x EBITDA), a manufacturing business (valued at 8x EBITDA), and a financial services business (valued at 12x EBITDA) — each segment is valued using its relevant peer group.

SOTP analysis frequently reveals a "conglomerate discount" — the whole company trades below the sum of its parts. This discount typically ranges from 10-25% and arises because: conglomerates are harder for investors to analyze, capital allocation across diverse businesses may be suboptimal, and management attention is diluted. Activist investors frequently use SOTP analysis to advocate for spin-offs, carve-outs, or asset sales to "unlock" hidden value. Famous examples include the breakups of General Electric, United Technologies, and DowDuPont, where separated entities traded at substantially higher combined values than the pre-split conglomerate.