Separate-versus-Combined Merger Test
Judge a merger against the value both companies could create separately
- Difficulty
- Moderate
- Time to result
- ~weeks to results
- Steps
- 7
- Confidence
- 93%
The Separate-versus-Combined Merger Test evaluates whether joining two companies created incremental value rather than merely producing a larger enterprise. First estimate what each business could credibly have become on its own over a fixed horizon. Add those standalone values, then compare the result with the actual or projected value of the combined company. The analysis should separate genuine synergies—such as distribution, capital, intellectual property, or recurring revenue—from market growth that either company would have enjoyed anyway. It should also account for integration costs, missed opportunities, strategic positioning, and alternative investments. The result is necessarily counterfactual, so conclusions should include explicit uncertainty rather than treating a higher current market capitalization as automatic proof of success.
Origin
Extracted from The Shawn Ryan Show
Core principles
- 01Absolute growth does not prove that a merger created value
- 02The correct baseline is the companies' credible standalone future
- 03Synergies must exceed integration costs and lost alternatives
- 04Operational outcomes and market valuation should both be examined
- 05Large-base value creation deserves different context from startup-style multiples
How to run it
- 1
Fix the evaluation horizon
Choose the same starting date and end date for the combined company and both standalone scenarios.
Pro tip Use a horizon long enough for expected synergies to emerge.
Watch out Changing horizons between scenarios can predetermine the result.
- 2
Model each standalone company
Estimate revenue, margins, strategic position, and valuation for each company had the merger not occurred.
Pro tip Use pre-deal capabilities and contemporaneous industry evidence rather than hindsight alone.
Watch out Do not assume that every post-merger success required the merger.
- 3
Build the combined baseline
Add the estimated standalone enterprise values to determine the minimum counterfactual value the merger should beat.
Pro tip Keep financing and ownership effects separate from operating performance.
Watch out Comparing the combined company with only one predecessor exaggerates value creation.
- 4
Attribute synergies and losses
Identify which revenue gains, cost savings, innovations, delays, or missed markets arose specifically because the companies combined.
Pro tip Demand a causal explanation for each claimed synergy.
Watch out Labeling general market growth as synergy overstates deal performance.
- 5
Compare alternatives
Contrast the merger's return with reasonable capital-market and strategic alternatives over the same period.
Pro tip Include both passive benchmarks and realistic industry choices.
Watch out A single exceptional stock is not a fair benchmark unless it was a credible alternative.
- 6
Assess future position
Evaluate whether the merger improved durable assets, competitive options, distribution, and readiness for the next industry wave.
Pro tip Separate current financial results from option value.
Watch out Promising future positioning should not erase a weak realized return.
- 7
State the verdict and uncertainty
Assign a conclusion or grade while naming the counterfactual assumptions most likely to change it.
Pro tip Use ranges when standalone valuations are highly uncertain.
Watch out False precision hides the central difficulty of merger evaluation.
In the wild
The combined company grew from roughly a $19 billion valuation to about $44.9 billion. The test asks whether Activision and Blizzard, operating separately, would together have reached a greater or lesser value, while considering Blizzard's recurring online economics, Activision's distribution strength, missed MOBA opportunities, and the scale of value created on a large base.
→ The hosts reach positive but qualified grades because the merger created substantial value while leaving major opportunities uncaptured.
Common mistakes
Using absolute growth as proof
A company can double after a merger while still underperforming what the two businesses could have achieved separately.
Ignoring the starting scale
Percentage returns alone can obscure how difficult it is to add tens of billions of dollars in value to a large enterprise.
Claiming every success as synergy
Industry growth, inherited products, and pre-existing momentum must be separated from merger-specific benefits.
Is it for you?
Best for
It is best for evaluating mergers of substantial companies with plausible standalone growth paths.
Not ideal for
It is not ideal when reliable standalone counterfactuals cannot be estimated or when survival rather than value maximization drove the transaction.
From the transcript
“the framework that we're going to use is the combined enterprise value, like far down the road.”
“if they had stayed separate and executed and you know, both grew in value versus if they had combined and achieved, dare I say, synergies…”
From the episode
Activision Blizzard