The scope: combining valuation methods, not building them
A note on scope: this module is about TRIANGULATING valuation outputs in a memo — checking assumption-independence, weighting the three methods, and presenting a defensible range. The valuation methods themselves (discounted cash flow, comparable-company multiples, precedent transactions) are taught in the DCF Modeling and Comparable Company Analysis paths. Here we assume you can build each method and focus on combining and defending them.
What each valuation method captures and misses
| Method | What it captures well | Where it is weak |
|---|---|---|
| Discounted cash flow (DCF) | Long-term cash-flow generation; captures explicit forecast period plus terminal value; sensitive to operating-leverage and capital-intensity assumptions | Terminal-value dominance (often 70%+ of enterprise value); sensitivity to discount-rate and perpetual-growth assumptions; analyst can tune assumptions to back into a desired answer |
| Comparable companies (trading multiples) | Reflects current market sentiment and multiple-regime conditions; captures investor-perceived risk and growth; quick to compute and update | Depends entirely on comp-set selection (the same target can be valued 50% differently against two different peer sets); inherits the market's optimism or pessimism; non-pure-play companies have no clean comp set |
| Precedent transactions (M&A multiples) | Reflects what acquirers actually pay (including control premium and synergy expectations); captures change-of-control value rather than minority-stake value; useful as a takeover-floor estimate | Database limited and noisy; bundles strategic vs financial buyer types; synergy assumptions in historical deals contaminate the median; vintage effects (deals from a different M&A cycle reflect different financing conditions) |
| Sum-of-parts (SOTP) [conglomerate variant] | Captures the fact that a multi-segment business can be worth more split apart than together; values each segment against its native comp set; surfaces under-recognized hidden gems | Holding-company discount can be 15-30% of gross SOTP; structurally hard to realize the SOTP value without a corporate action (spin-off, divestiture, breakup); inherits the weaknesses of each segment's valuation method |
| NAV (asset-based) [financial-firm variant] | Anchors valuation to underlying asset value rather than earnings; useful for banks, BDCs, REITs, asset managers, holding companies | Fair-value marks on illiquid assets carry estimation error; book value can be stale relative to economic value; ignores earnings power above and beyond static asset value |
The assumption-independence check on convergence
The single highest-leverage move in valuation triangulation is the assumption-independence check. When three methods converge into a tight range, the natural reading is high-conviction valuation -- but the convergence is only meaningful if the inputs were truly independent. If the DCF used a WACC derived from the comp set's implicit cost-of-capital, and the comp set used a normalization period that matched the DCF base year, and the precedent transactions were filtered to the same vintage as the comp set, the "three methods" are effectively one analytical view repeated three times. Real independence means each method made its own analytical choices about discount rate, growth, normalization, and time window; convergence from independent inputs is genuine evidence, convergence from shared inputs is double-counting. The diagnostic is to read the assumption appendix and ask: were these choices made independently, or aligned for narrative coherence?
Weighting the three methods by business type
Asymmetric weighting is the second non-obvious move in triangulation. Once the three methods produce three numbers, the analyst must decide how much weight to give each. The naive default is to average them (one-third each), but this is rarely correct. For a stable cash-flow business in a mature industry, the DCF is the most reliable input and might deserve 50% weight; comps are a useful cross-check at 30%; precedent transactions are noisy at 20%. For a high-growth business with limited operating history, comps may be the most reliable (current market multiples reflect the consensus growth expectation) and DCF is the weakest (terminal-value assumptions dominate and are highly uncertain). For a takeover-defensive situation, precedent transactions become decision-relevant because they bound the floor a strategic acquirer would pay. A memo that simply averages three numbers without justifying the weighting is skipping one of the most important analytical steps; a memo that explicitly justifies asymmetric weighting is doing the work.
Draft valuation weightings for two business types
What a wide valuation range tells you
Why a wide range carries diagnostic information
The wide range is informative. A $80-120 spread across three methods is honest disagreement among the methods about what the business is worth, and the disagreement carries diagnostic information: it tells you which assumption is most contested. In this case, DCF at $120 vs comps at $80 likely reflects a tension between long-term cash-flow assumptions (favoring a higher DCF value) and current market sentiment (compressing the comp multiple); precedents in the middle reflect a long-run average that splits the difference. The disciplined response is to identify which of the contested assumptions you most believe -- if you think current market pessimism on the sector is overdone and the long-run cash flows are intact, the DCF view at $120 gets more weight; if you think the market is correctly pricing structural headwinds and the DCF is anchored to a too-optimistic terminal assumption, the comp view at $80 gets more weight. The width of the range is the analytical signal; tightening it artificially to a "defensible average" is forfeiting that signal. Rejecting the memo for showing a wide range mistakes honesty for sloppiness; a memo that reports wide-but-genuine triangulation is doing better work than a memo that reports tight-but-aligned triangulation.
Why triangulation beats any single method
Choosing sum-of-parts for a conglomerate
Four pathologies in valuation triangulation
Going deeper (optional). Up next: four common pathologies in valuation triangulation — an advanced aside you can skip on first pass and come back to anytime. Continue when you're curious.
Going Deeper -- four common pathologies in valuation triangulation. (1) Shared-input convergence: three methods using the same WACC or the same comp set produce a falsely tight range; spot it in the assumption appendix. (2) Equal-weight default: averaging three methods without justifying the weighting hides the analyst's view of which method is most reliable for this business; force yourself to articulate asymmetric weights. (3) Range-hiding: the memo reports a single "fair value" number instead of the range across methods, suppressing the diagnostic information that wide vs tight conveys; ask for the range explicitly. (4) Method-mismatched to business: applying a DCF to a financial firm (where NAV is the right anchor), or applying comp multiples to a unique business with no clean peer set, produces a fake-precise number that is structurally inappropriate for the underlying economics. AI prompt for self-review: "Given this valuation triangulation, identify whether the three method inputs were independent or shared, and whether the weighting across methods is justified for this specific business type." The next module turns from triangulation to the brainteaser-style quant reasoning that underlies many valuation-by-inspection moves a strong analyst makes intuitively.
Sit with the ideas.
A memo's valuation section shows three methods: DCF arrives at $80/share, comparable-company multiples arrive at $82/share, and precedent transactions arrive at $78/share. The current stock price is $60. What is the disciplined read on this valuation triangulation, and what should you do next?