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Should You Have Strat Aero Plc’s (AIM:AERO) In Your Portfolio?

If you are a shareholder in Strat Aero Plc’s (AIM:AERO), or are thinking about investing in the company, knowing how it contributes to the risk and reward profile of your portfolio is important. There are two types of risks that affect the market value of a listed company such as AERO. The first risk to consider is company-specific, which can be diversified away when you invest in other companies in the same industry as AERO, because it is rare that an entire industry collapses at once. The second type is market risk, one that you cannot diversify away, since it arises from macroeconomic factors which directly affects all the stocks in the market.

Not every stock is exposed to the same level of market risk. A widely-used metric to measure a stock's market risk is beta, and the broad market index represents a beta value of one. A stock with a beta greater than one is expected to exhibit higher volatility resulting from market-wide shocks compared to one with a beta below one.

Check out our latest analysis for Strat Aero

What is AERO’s market risk?

With a five-year beta of 0.26, Strat Aero appears to be a less volatile company compared to the rest of the market. This means the stock is more defensive against the ups and downs of a stock market, moving by less than the entire market index in times of change. AERO's beta implies it may be a stock that investors with high-beta portfolios might find relevant if they wanted to reduce their exposure to market risk, especially during times of downturns.

AIM:AERO Income Statement Sep 18th 17
AIM:AERO Income Statement Sep 18th 17

Does AERO's size and industry impact the expected beta?

A market capitalisation of GBP £1.28M puts AERO in the category of small-cap stocks, which tends to possess higher beta than larger companies. Moreover, AERO’s industry, capital goods, is considered to be cyclical, which means it is more volatile than the market over the economic cycle. Therefore, investors may expect high beta associated with small companies, as well as those operating in the capital goods industry, relative to those more well-established firms in a more defensive industry. This is an interesting conclusion, since both AERO’s size and industry indicates the stock should have a higher beta than it currently has. There may be a more fundamental driver which can explain this inconsistency, which we will examine below.

Is AERO's cost structure indicative of a high beta?

During times of economic downturn, low demand may cause companies to readjust production of their goods and services. It is more difficult for companies to lower their cost, if the majority of these costs are generated by fixed assets. Therefore, this is a type of risk which is associated with higher beta. I examine AERO’s ratio of fixed assets to total assets to see whether the company is highly exposed to the risk of this type of constraint. Since AERO’s fixed assets are only 11.41% of its total assets, it doesn’t depend heavily on a high level of these rigid and costly assets to operate its business. Thus, we can expect AERO to be more stable in the face of market movements, relative to its peers of similar size but with a higher portion of fixed assets on their books. This is consistent with is current beta value which also indicates low volatility.

What this means for you:

Are you a shareholder? You may reap the benefit of muted movements during times of economic decline by holding onto AERO. Its low fixed cost also means that, in terms of operating leverage, its costs are relatively malleable to preserve margins. I recommend analysing the stock in terms of your current portfolio composition before increasing your exposure to the stock.

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Are you a potential investor? You should consider the stock in terms of your portfolio. It could be a valuable addition in times of an economic decline, due to its low fixed cost and low beta. However, I recommend you to also look at its fundamental factors as well, such as its current valuation and financial health to assess its investment thesis in further detail.

Beta is one aspect of your portfolio construction to consider when holding or entering into a stock. But it is certainly not the only factor. Take a look at our most recent infographic report on Strat Aero for a more in-depth analysis of the stock to help you make a well-informed investment decision. But if you are not interested in Strat Aero anymore, you can use our free platform to see my list of over 50 other stocks with a high growth potential.


To help readers see pass the short term volatility of the financial market, we aim to bring you a long-term focused research analysis purely driven by fundamental data. Note that our analysis does not factor in the latest price sensitive company announcements.

The author is an independent contributor and at the time of publication had no position in the stocks mentioned.