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Accretion/Dilution Analysis

The 30-Second Summary

What is Accretion/Dilution Analysis? A Plain English Definition

Imagine you and nine friends (10 people total) co-own a pizzeria that generates 100 slices of profit each year. Your share is 10 slices (100 slices / 10 owners). This is your “Earnings Per Share,” or EPS. One day, you decide to merge with another pizzeria down the street. That pizzeria has 5 owners and generates 60 slices of profit. To complete the merger, you have to give the 5 owners of the new pizzeria an ownership stake in your combined company. Let's say you issue them 5 new ownership “shares.” Now, the combined pizzeria has 15 owners (your original 10 + the new 5) and generates 160 slices of profit (your original 100 + their 60). What's your new share? It's now 160 slices / 15 owners = approximately 10.67 slices. Your personal share of the profit pie went from 10 slices to 10.67 slices. Your earnings per share have grown. This is accretion. The deal was “accretive.” But what if, to get the deal done, you had to give them 8 new ownership shares instead of 5? The total profit is still 160 slices, but now there are 18 owners (10 + 8). Your new share would be 160 / 18 = approximately 8.89 slices. Your personal share has shrunk. This is dilution. The deal was “dilutive.” Accretion/Dilution Analysis is simply the formal, financial version of this pizzeria math. It's a spreadsheet exercise done by investment bankers and corporate managers before a deal to forecast whether the acquiring company's EPS will go up or down as a result of the transaction. It's a simple, and often dangerously simplistic, scorecard for a deal's immediate impact.

“It's far better to buy a wonderful company at a fair price than a fair company at a wonderful price.” - Warren Buffett

This quote from Warren Buffett is the perfect antidote to the short-term thinking that an accretion/dilution analysis can encourage. A deal might be “accretive” on paper, but if you overpay for a mediocre second pizzeria, you've weakened your entire business in the long run.

Why It Matters to a Value Investor

A value investor's toolkit is filled with instruments for deep, long-term analysis. Accretion/dilution analysis is more like a small pocket flashlight than a high-powered microscope. It has its uses, but you must understand its limitations. For a value investor, this analysis matters for four main reasons:

In short, a value investor never makes a decision based on an accretion/dilution analysis. Instead, they use it to ask better, tougher questions.

How to Calculate and Interpret Accretion/Dilution Analysis

While the concept is simple, the calculation involves a few moving parts. It's a “pro-forma” exercise, which is a fancy way of saying it's a projection of a combined future that doesn't exist yet.

The Method

Here is a simplified step-by-step method to understand the logic:

Interpreting the Result

The number itself isn't the story; the reason for the number is.

A value investor treats the result not as a “pass/fail” grade, but as a piece of evidence to be cross-examined.

A Practical Example

Let's invent two companies: “Steady Foundations Inc.” (the acquirer) and “Growth Gears Co.” (the target).

Metric Steady Foundations (Acquirer) Growth Gears (Target)
Net Income $100 million $20 million
Shares Outstanding 50 million 10 million
Earnings Per Share (EPS) $2.00 $2.00
Stock Price $40.00 $30.00
P/E Ratio 20x 15x

Steady Foundations wants to acquire Growth Gears in an all-stock deal. The offer is to give Growth Gears shareholders $30 for each of their shares, paid for in Steady Foundations stock. Step 1: Calculate the Combined Net Income.

Step 2: Calculate the New Total Shares Outstanding.

Step 3: Calculate the Pro-Forma EPS.

Step 4: Compare and Conclude.

A typical CEO might stop here and celebrate. A value investor asks: Are the $5 million in synergies real? Is Growth Gears truly worth $300 million, or are we overpaying? Is this deal strategically sound, or just a way to make the EPS number look good for a quarter or two?

Advantages and Limitations

Strengths

Weaknesses & Common Pitfalls

1)
Synergies are the “2+2=5” effects—cost savings or new revenue opportunities from combining the companies. Be very skeptical of these; they are notoriously overestimated.