What is Unlevered Beta (Asset Beta)?
Unlevered beta (a.k.a. Asset Beta) is the beta of a company without the impact of debt. It is also known as the volatility of returns for a company, without taking into account its financial leverage. It compares the risk of an unlevered company to the risk of the market. It is also commonly referred to as “asset beta” because the volatility of a company without any leverage is the result of only its assets.
Equity Beta vs Asset Beta
Levered beta (or “equity beta”) is a measurement that compares the volatility of returns a company’s stock against those of the broader market. In other words, it’s a measure of risk and it includes the impact of a company’s capital structure and leverage. Equity beta allows investors to gauge how sensitive a security might be to macro-market risks. For example, a company with a beta of 1.5 has returns that are 150% as volatile as the market it’s being compared to.
When you look up a company’s beta on Bloomberg the default number you see is levered, and it reflects the debt of that company. Since each company’s capital structure is different, an analyst will often want to look at how “risky” the assets of a company are, regardless of what percentage of debt or equity funding it has.
The higher a company’s debt or leverage, the more earnings from the company that is committed to servicing that debt. As a company adds more and more debt, the company’s uncertainty of future earnings is also increasing. This increases the risk associated with the company’s stock, but, it is not a result of the market or industry risk. Therefore, by removing the financial leverage (debt impact), the unlevered beta can capture the risk of only the company’s assets.
How do you Calculate Unlevered Beta / Asset Beta?
To determine the risk of a company without debt, we need to un-lever the beta (i.e. remove the debt impact).
To do this, look up the beta for a group of comparable companies within the same industry, un-lever each one, take the median of the set, and then re-lever it based on your company’s capital structure.
Finally, you can use this Levered Beta in the cost of equity calculation.
For your reference, the formulas for un-levering and re-levering Beta are below:
Excel Example – Converting Equity to Asset Beta
Below is an example analysis of how to switch between Equity and Asset Beta. Let’s analyze a few of the results to better illustrate how it works.
Stock 1 has an equity beta of 1.21 and a net debt to equity ratio of 21%. After unlevering the stock, the beta drops down to 1.07, which makes sense because the debt was adding leverage to the stock returns.
Stock 2 has no cash and no debt so the equity and asset betas are the same. This makes perfect sense since there is no capital structure impact on the returns.
Stock 3 has a net cash position (negative net debt), so when it is converted, the asset beta is actually higher than the equity beta. This also makes sense because the value of cash never changes, so the volatility in the stock (equity beta) is actually lowered by the effect of the net cash position.
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What is Asset Beta Used For?
Asset beta is used to measure the risk of a security minus the company’s debt.
It is best to use asset beta when either a company or an investor wants to measure a company’s performance in relation to the market without the impact of a company’s debt.
When compared to levered beta, the asset beta does not take into effect the impact of financial leverage (debt). Asset beta is commonly used in financial modeling and business valuation for professionals working in investment banking or equity research.
Graph of Beta
Beta is calculated as the line of best fit on a graph of market returns vs the asset’s returns. In Excel, this can be calculated using the Slope function.
Hopefully, this has been a helpful guide to unlevered beta or asset beta and encourages you to keep building your corporate finance knowledge.
More helpful resources on the topic include: