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Is the Indian market overvalued?

By Shobhana Subramanian
October 02, 2009 15:18 IST
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Look at the price-earnings ratio, and not just the Sensex, writes Shobhana Subramanian.

A look at the Sensex value doesn't give you the correct picture since what matters is the earnings outlook for companies. It would be incorrect to assume that the markets are cheaper when the Sensex is at 15,000 or that they are more expensive when it is at 20,000.

That's because a market is valued according to the estimated future growth in profits of companies. The growth outlook for companies can be brighter when the market is at 20,000 and so the market can actually be cheaper at those levels.

Conversely, if the prospects for growth are muted going ahead, the market could be expensive even at 15,000.

So one useful metric with which to value the market is the price-earnings (P/E) ratio.

If you were bottom trawling, however, you could consider other metrics like the dividend yield. If the dividend yield is say 4-5 per cent, then it is worth buying these stocks because one is getting an assured return and over two years one can expect some capital appreciation.

What is the price-earnings (P/E) ratio?

If company A's share costs Rs 100 and it is expected to give shareholders an Earning Per Share (EPS) of Rs 10 in the current year ending March 2010, the current P/E is 10. If the EPS for the year ending March 2011 is expected to be say Rs 15, the forward P/E is 6.6.

The P/E for the market is typically the P/E for the benchmark index. One of the simple ways to arrive at the EPS for the 30-company Sensex: The EPS of each of the constituents is multiplied by its respective free-float market capitalisation.

Then these numbers are added and the total is divided by the sum of the individual free-float market capitalisations.

That gives weighted EPS of the Sensex. To arrive at the Sensex P/E, the Sensex is divided by the Sensex EPS. Consensus estimates (typically the average of estimates from about 20 brokerages) for the Sensex are Rs 900 for 2009-10.

Since the Sensex is at 17,100 right now, this means the current P/E is 19. For the year 2010-11, the consensus, right now is Rs 1,050, so the forward Sensex P/E is 16.2.

So, how does one judge whether the Sensex P/E is high or low?

The P/E ratio has to be benchmarked to the historical P/E of the country and also to the P/Es of peer group markets. India's historical long-term average P/E is close to 15. So, from a historical point, the Sensex is more expensive currently. India's peer group would include countries such as Taiwan, Korea, China, Brazil, Russia and other emerging markets.

As of now, Taiwan is among the most expensive markets in the region, trading at a current P/E of over 30 times mainly because the market expects a huge spurt in earnings of over 75 per cent in calendar 2010, following the recovery in the US economy.

Korea is slightly cheaper - at around 14.5 times - than India, although the earnings outlook is slightly better than that for India. China is cheaper than India, justifiably because the earnings outlook for that market is less exciting than that for India.

What is the relation between P/E and interest rates?

Typically, there is an inverse relationship between interest rates and P/Es. P/Es are a function of risk appetite, the higher the risk appetite the higher the P/E. In a tight money scenario, when interest rates are high, people are risk averse so the P/E will be low.

In an easy money environment, when interest rates are low, people are willing to borrow to invest in the markets and so the prices move up, pushing up the P/E. Currently in India, interest rates are trending down in an easy money environment.

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Shobhana Subramanian in Mumbai
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