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Thai Beverage Public Company Limited’s Shares Are Up Over 46% in 1 Year: Here’s What Happened

There can be good reasons as well as poor reasons for why a stock’s price moves.

For the Foolish investor, understanding the right reason is important. If we can determine the reason, we may get an inkling on whether the movement in the stock price is deserved or undeserved.

A simple framework

To help with this, I would like to defer to a couple of paragraphs from The Little Book that Builds Wealth by author and fund manager Pat Dorsey:

Over long stretches of time, there are just two things that push a stock up or down: The investment return, driven by earnings growth and dividends, and the speculative return, driven by changes in the price-earnings (P/E) ratio.

Think of the investment return as reflecting a company’s financial performance, and the speculative return as reflecting the exuberance or pessimism of other investors.

Under Dorsey’s framework, stock price returns can fall on the deserved-end of the spectrum (investment return), the undeserved-end of the spectrum (speculative return), or anywhere in between.

Deciphering the moving pieces

We can track the reasons for a stock’s movement by noting down financial metrics like the earnings per share (EPS) and price to earnings (PE ratio); they could also be a simple way for you to track the progress of a company over time and can form part of your investment journal .

Let’s use food and beverage provider Thai Beverage Public Company Limited (SGX: Y92) as an example.

Below, I have summarized the company’s EPS, PE ratio and the change for each figure compared to a year ago:

2016-10-06-thai-beverage-stock-price
Source: Google Finance; Earnings Report; Fx rate (SGD to THB) = 1 to 25.4

Thai Beverage’s shares benefited from both higher EPS and higher PE ratio.

EPS rose 24.4% while PE ratio expanded to 22.6 times. The higher PE ratio suggests that investors are more optimistic about the company.

But are there good reasons for the optimism?

Thai Beverage’s latest reporting quarter was a solid one. The food and beverage purveyors’ revenue was up 16.6% year on year while profit was unchanged. Notably, its beer sales soared almost 70% year on year, buoyed by new packaging for its Chang beer brand. Thai Beverage also elected to increase its interim dividend per share to THB 0.20, up from THB 0.15 last year.

Foolish takeaway

If a stock price rises (or falls), we should try to understand if it is backed by a company’s fundamental growth (or decline), or whether it is simply a result of investor exuberance (or pessimism).

When we understand the difference, we may become a better judge on whether our stock price gains are justified – with commensurate growth in earnings – or something we should investigate further.

While luck is always welcome, Foolish investors could be better off with the former over the long-term.

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The information provided is for general information purposes only and is not intended to be personalised investment or financial advice. Motley Fool Singapore contributor Chin Hui Leong doesn’t own shares in any companies mentioned.