Before You Buy Tetra Tech, Inc. (NASDAQ:TTEK), Consider Its Volatility

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If you own shares in Tetra Tech, Inc. (NASDAQ:TTEK) then it's worth thinking about how it contributes to the volatility of your portfolio, overall. In finance, Beta is a measure of volatility. Modern finance theory considers volatility to be a measure of risk, and there are two main types of price volatility. The first category is company specific volatility. This can be dealt with by limiting your exposure to any particular stock. The second type is the broader market volatility, which you cannot diversify away, since it arises from macroeconomic factors which directly affects all the stocks on the market.

Some stocks mimic the volatility of the market quite closely, while others demonstrate muted, exagerrated or uncorrelated price movements. Beta can be a useful tool to understand how much a stock is influenced by market risk (volatility). However, Warren Buffett said 'volatility is far from synonymous with risk' in his 2014 letter to investors. So, while useful, beta is not the only metric to consider. To use beta as an investor, you must first understand that the overall market has a beta of one. Any stock with a beta of greater than one is considered more volatile than the market, while those with a beta below one are either less volatile or poorly correlated with the market.

View our latest analysis for Tetra Tech

What TTEK's beta value tells investors

Given that it has a beta of 1.16, we can surmise that the Tetra Tech share price has been fairly sensitive to market volatility (over the last 5 years). If this beta value holds true in the future, Tetra Tech shares are likely to rise more than the market when the market is going up, but fall faster when the market is going down. Many would argue that beta is useful in position sizing, but fundamental metrics such as revenue and earnings are more important overall. You can see Tetra Tech's revenue and earnings in the image below.

NasdaqGS:TTEK Income Statement, April 10th 2019
NasdaqGS:TTEK Income Statement, April 10th 2019

How does TTEK's size impact its beta?

With a market capitalisation of US$3.3b, Tetra Tech is a pretty big company, even by global standards. It is quite likely well known to very many investors. It takes deep pocketed investors to influence the share price of a large company, so it's a little unusual to see companies this size with high beta values. It may be that that this company is more heavily impacted by broader economic factors than most.

What this means for you:

Since Tetra Tech tends to moves up when the market is going up, and down when it's going down, potential investors may wish to reflect on the overall market, when considering the stock. This article aims to educate investors about beta values, but it's well worth looking at important company-specific fundamentals such as Tetra Tech’s financial health and performance track record. I highly recommend you dive deeper by considering the following:

  1. Future Outlook: What are well-informed industry analysts predicting for TTEK’s future growth? Take a look at our free research report of analyst consensus for TTEK’s outlook.

  2. Past Track Record: Has TTEK been consistently performing well irrespective of the ups and downs in the market? Go into more detail in the past performance analysis and take a look at the free visual representations of TTEK's historicals for more clarity.

  3. Other Interesting Stocks: It's worth checking to see how TTEK measures up against other companies on valuation. You could start with this free list of prospective options.

We aim to bring you long-term focused research analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material.

If you spot an error that warrants correction, please contact the editor at editorial-team@simplywallst.com. This article by Simply Wall St is general in nature. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. Simply Wall St has no position in the stocks mentioned. Thank you for reading.

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