Tertiary Minerals plc (AIM:TYM): What Does It Mean For Your Portfolio?

For Tertiary Minerals plc’s (AIM:TYM) shareholders, and also potential investors in the stock, understanding how the stock’s risk and return characteristics can impact your portfolio is important. Every stock in the market is exposed to market risk, which arises from macroeconomic factors such as economic growth and geo-political tussles just to name a few. This is measured by its beta. Not every stock is exposed to the same level of market risk, and the broad market index represents a beta value of one. Any stock with a beta of greater than one is considered more volatile than the market, and those with a beta less than one is generally less volatile.

Check out our latest analysis for Tertiary Minerals

What is TYM’s market risk?

Tertiary Minerals has a beta of 1.07, which means that the percentage change in its stock value will be higher than the entire market in times of booms and busts. A high level of beta means investors face higher risk associated with potential gains and losses driven by market movements. Based on this beta value, TYM may be a stock for investors with a portfolio mainly made up of low-beta stocks. This is because during times of bullish sentiment, you can reap more of the upside with high-beta stocks compared to muted movements of low-beta holdings.

Could TYM's size and industry cause it to be more volatile?

A market capitalisation of GBP £1.66M puts TYM in the category of small-cap stocks, which tends to possess higher beta than larger companies. In addition to size, TYM also operates in the metals and mining industry, which has commonly demonstrated strong reactions to market-wide shocks. As a result, we should expect higher beta for small-cap stocks in a cyclical industry compared to larger stocks in a defensive industry. This supports our interpretation of TYM’s beta value discussed above. Fundamental factors can also drive the cyclicality of the stock, which we will take a look at next.

AIM:TYM Income Statement Oct 10th 17
AIM:TYM Income Statement Oct 10th 17

Can TYM's asset-composition point to a higher beta?

An asset-heavy company tends to have a higher beta because the risk associated with running fixed assets during a downturn is highly expensive. I test TYM’s ratio of fixed assets to total assets in order to determine how high the risk is associated with this type of constraint. Considering fixed assets account for less than a third of the company's overall assets, TYM seems to have a smaller dependency on fixed costs to generate revenue. As a result, the company may be less volatile relative to broad market movements, compared to a company of similar size but higher proportion of fixed assets. This outcome contradicts TYM’s current beta value which indicates an above-average volatility.

What this means for you:

Are you a shareholder? You could benefit from higher returns during times of economic growth by holding onto TYM. Its low fixed cost also means that, in terms of operating leverage, it is relatively flexible during times of economic downturns. Consider the stock in terms of your other portfolio holdings, and whether it is worth investing more into TYM.

Are you a potential investor? I recommend that you look into TYM's fundamental factors such as its current valuation and financial health. Take into account your portfolio sensitivity to the market before you invest in the stock, as well as where we are in the current economic cycle. TYM may be a great investment during times of economic growth.

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 Tertiary Minerals 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 Tertiary Minerals 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.

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