Saturday, March 14, 2009

How to select a stock- Part VII- Finding the right price of a stock

In this post, we will learn about how to find the right price for a stock. Many people confuse good companies with a good stock. If they like a company’s business model, they purchase its stock without any consideration of the price it is trading at. What matters more in investment is that you have bought a stock at the right price. If you have bought stocks of a great company at a very high price level, it may not turn out to be a great investment. On the contrary, if you have bought stocks of a good company at a good price level (cheap), you may get good return on your investment. It’s important to buy cheap.

A stock price is supposedly an indicator of net present value of future earnings for the stock on per share basis. This is also called the intrinsic value of a stock. However, the problem with this concept is that one needs to predict the future to be able to arrive at the right stock price. Millions of people have tried predicting future in the past, but rarely have we seen anybody doing so accurately. This very concept leads to a lot of investing mistakes by millions of people. A lot of analysts get into the game of predicting future earnings through various esoteric mathematical formulae. Nobody gets it right!

A good approach for stock selection could be following what legendary Investment Guru Benjamin Graham advised- follow the principles of ‘margin of safety’ and ‘diversification’.

The margin of safety concept says what you are buying should be worth more than what you are paying by a wide margin. Such a simple thing, but it’s really difficult to act on it considering the problem in assessing the value of a stock. Graham says you shouldn’t get into the business of predicting the future; instead, use the past performance to assess the ability of the company to keep producing decent earnings in future. Hence, if the company has a current earning of about 12% of the stock price (i.e. a PE ratio of 8), and meets all our criteria of selection as mentioned in my previous posts, and risk free return (of a 10-year government bond) is 6%, you have a good margin of safety in the stock. There is no general formula for all industries. However, in most of the cases, the PE ratio should not go beyond 15. The higher the PE ratio, the more future growth dependent your return on the stock becomes. Never buy a stock if you believe it is fully priced even if it is of the best performing company.

Diversification is linked with the concept of margin of safety. Let me explain. If you are playing dart, and you are good at it; what are your chances of hitting bulls eye once if you have only once dart? What if you have ten darts? Of course, you will have much better chances of hitting Bull’s Eye at least once if you have ten darts. Do you understand the difference? If you have margin of safety in your favor, your chances of making good returns or at least not incurring loss in a portfolio of diversified stocks becomes pretty high. However, there is a caution here. Diversification will work to your favor if you have diversified in stocks with good margin of safety. It will hurt you badly if you have bought all losers. Diversification in overpriced stocks will ensure that you most likely incur loss on your investment. So, be careful. Don’t buy costly stocks. Always maintain a diversified portfolio of good stocks bought with a margin of safety.

With this, the series on ‘how to select stocks for investing’ ends. I hope I have been able to give you a few basic guidelines on how to go about picking stocks for investment. I must add that these are indicative guidelines and by no means exhaustive. You will do well if you use these guidelines along with your own research and experience backed by some sound reasoning.

1 comment:

  1. When picking stock Its always a good idea to favor companies that have a product or service thats needed and neccessary all the time.

    ReplyDelete