Anyone researching Domtar Corporation (NYSE:UFS) might want to consider the historical volatility of the share price. Volatility is considered to be a measure of risk in modern finance theory. Investors may think of volatility as falling into two main categories. First, we have company specific volatility, which is the price gyrations of an individual stock. Holding at least 8 stocks can reduce this kind of risk across a portfolio. The other type, which cannot be diversified away, is the volatility of the entire market. Every stock in the market is exposed to this volatility, which is linked to the fact that stocks prices are correlated in an efficient market.
Some stocks see their prices move in concert with the market. Others tend towards stronger, gentler or unrelated 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. A stock with a beta below one is either less volatile than the market, or more volatile but not corellated with the overall market. In comparison a stock with a beta of over one tends to be move in a similar direction to the market in the long term, but with greater changes in price.
View our latest analysis for Domtar
What UFS's beta value tells investors
Given that it has a beta of 1.93, we can surmise that the Domtar share price has been fairly sensitive to market volatility (over the last 5 years). Based on this history, investors should be aware that Domtar are likely to rise strongly in times of greed, but sell off in times of fear. 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 Domtar's revenue and earnings in the image below.
Does UFS's size influence the expected beta?
Domtar is a reasonably big company, with a market capitalisation of US$2.1b. Most companies this size are actively traded with decent volumes of shares changing hands each day. It has a relatively high beta, suggesting it may be somehow leveraged to macroeconomic conditions. For example, it might be a high growth stock with lots of investors trading the shares. It's notable when large companies to have high beta values, because it usually takes substantial capital flows to move their share prices.