Sum-of-the-Parts Valuation

A sum-of-the-parts (SOTP) valuation recognizes that a diversified company with multiple business segments often has segments with different growth rates, risk profiles, and multiples. Rather than value the whole at a single multiple or discount rate, you value each segment separately using appropriate metrics and multiples, then add them together. The result is often higher than valuing the company as a whole—highlighting the conglomerate discount.

How SOTP works

Step 1: Define segments. Break the company into its business divisions. A diversified conglomerate might have: industrial, financial services, insurance, technology. An oil company might have: upstream, downstream, chemicals.

Step 2: Forecast segment financials. Project revenue, EBITDA, and other metrics for each segment. This might be given in financial reports or require estimation.

Step 3: Choose valuation method per segment. Each segment has different characteristics:

• A mature, cash-generative segment might use DCF or a 10x EBITDA multiple.
• A high-growth segment might use a 20x EBITDA multiple or three-stage DCF.
• A declining segment might use a lower multiple or assume eventual exit.

Step 4: Value each segment. Apply the chosen valuation (multiple or DCF) to each.

Step 5: Add segment values. Sum the valuations.

Step 6: Adjust for corporate overhead. Subtract unallocated corporate costs, debt, and minority interests.

Example. A conglomerate has three divisions:

• Industrial (stable, 20 million EBITDA, 10x multiple = 200 million)
• Tech (high-growth, 15 million EBITDA, 20x multiple = 300 million)
• Chemicals (declining, 10 million EBITDA, 8x multiple = 80 million)
• Corporate overhead = 30 million per year
• Net debt = 100 million

SOTP enterprise value = 200 + 300 + 80 = 580 million. Less PV of corporate overhead (assume 20 million perpetual, 8% cost of capital = 250 million). Less net debt = 100 million. Equity value = 580 - 250 - 100 = 230 million.

Why SOTP works

Reflects reality of business divisions. If one segment is thriving and another declining, why value them at the same multiple? SOTP captures the truth.

Exposes conglomerate discount. Often, SOTP value exceeds market value of the diversified company. This is the conglomerate discount—the market applies a discount to companies that cross-subsidize or are harder to analyze.

Facilitates scenario analysis. You can easily ask: “What if we spin off the tech division?” SOTP gives the answer directly.

More accurate for mixed portfolios. A company with one growth engine and several cash cows is better valued as a sum than as a whole.

When SOTP is most useful

Diversified conglomerates. Berkshire Hathaway, GE, Samsung. Companies with very different segment economics benefit hugely from SOTP.

Multi-region companies. A company with divisions in developed and emerging markets. Value each region separately; different growth rates and risk profiles warrant different multiples.

Businesses at different life cycle stages. A portfolio with growth, mature, and declining divisions.

Potential spinoffs. If there is a chance some divisions might be spun off, SOTP reveals breakup value.

Challenges in SOTP

Allocating corporate costs. How much of corporate headquarters is attributable to each segment? Allocation is subjective.

Inter-segment transfer pricing. Some segments might buy from or sell to other divisions at prices that don’t reflect market value. Adjusting for this is complex.

Synergies. If divisions create value through synergies (cross-selling, shared infrastructure), SOTP might overvalue—it treats them as stand-alone. Estimate synergy value and deduct.

Segment profitability reliability. Many companies don’t report segment data in detail. You might have to estimate.

Multiple selection. Picking the right multiple for each segment is harder than picking one for the whole company. Different analysts might choose different multiples.

SOTP vs. DCF for diversified companies

SOTP with multiples. Fast, market-grounded, transparent. But sensitive to multiple selection.

Segment-level DCF. Theoretically cleaner. Each segment gets a DCF with appropriate discount rate and growth assumptions. But much more detailed and subjective.

Best practice: do both. Use segment DCF to validate the multiples you apply in SOTP, or use SOTP to benchmark segment-level DCFs.

The conglomerate discount

Research shows that diversified conglomerates trade at a discount to their SOTP value. On average, the discount is 10–20%, sometimes more.

Explanations:

1. Distraction. Management focuses on internal politics rather than creating value.
2. Cross-subsidization. Winners are forced to support losers, destroying value for winners’ shareholders.
3. Complexity. Analysts cannot easily understand the company, so they apply a discount for uncertainty.
4. Capital allocation. Conglomerate management often allocates capital poorly, favoring legacy divisions.

The discount is largest for conglomerates where segments have very different growth rates and profitability.

Practical execution

A typical SOTP analysis includes:

1. Table of segment values. Each segment, its metric (EBITDA, revenue, etc.), the multiple or DCF value, and the resulting value.

2. Bridge to market cap. Show how segment values less corporate costs, debt, and minority interests equal or differ from market cap.

3. Sensitivity table. Show valuation at different multiples for each segment (e.g., industrial at 9x to 11x EBITDA).

4. Scenario. Explore what would happen if the company spun off a division or acquired another.

See also