Practical uses of the Index
Some of the practical uses of Index are discussed below.
Information – The index reflects the general market trend for a period of time. The index is a broad representation of the country’s state of economy. A stock market index that is up indicates people are optimistic about the future. Likewise when the stock market index is down it indicates that people are pessimistic about the future.
For example the Nifty value on 1st of January 2014 was 6301 and the value as of 24thJune 2014 was 7580. This represents a change of 1279 points in the index of 20.3% increase. This simply means that during the time period under consideration, the markets have gone up quite significantly indicating a strong optimistic economic future.
The time frame for calculating the index can be for any length of time.. For example, the Index at 9:30 AM on 25th June 2014 was at 7,583 but an hour later it moves to 7,565. A drop of 18 points during this period indicates that the market participants are not too enthusiastic.
Benchmarking – For all the trading or investing activity that one does, a yardstick to measure the performance is required. Assume over the last 1 year you invested Rs.100,000/- and generated Rs.20,000 return to make your total corpus Rs.120,000/- . How do you think you performed? Well on the face of it, a 20% return looks great. However what if during the same year Nifty moved to 7,800 points from 6,000 points generating a return on 30%?
Well suddenly it may seem to you, that you have underperformed the market! If not for the Index you can’t really figure out how you performed in the stock market. You need the index to benchmark the performance of a trader or investor. Usually the objective of market participants is to outperform the Index.
Trading – Trading on the index is probably one of most popular uses of the index. Majority of the traders in the market trade the index. They take a broader call on the economy or general state of affairs, and translate that into a trade.
For example imagine this situation. At 10:30 AM the Finance Minister is expected to deliver his budget speech. An hour before the announcement Nifty index is at 6,600 points. You expect the budget to be favorable to the nation’s economy. What do you think will happen to the index? Naturally the index will move up. So in order to trade your point of view, you may want to buy the index at 6,600. After all, the index is the representation of the broader economy.
So as per your expectation the budget is good and the index moves to 6,900. You can now book your profits, and exit the trade at a 300 points profit! Trades such as these are possible through what is known as ‘Derivative’ segment of the markets. We are probably a bit early to explore derivatives, but for now do remember that index trading is possible through the derivative markets.
Portfolio Hedging – Investors usually build a portfolio of securities. A typical portfolio contains 10 – 12 stocks which they would have bought from a long term perspective. While the stocks are held from a long term perspective they could foresee a prolonged adverse movement in the market (2008) which could potentially erode the capital in the portfolio. In such a situation, investors can use the index to hedge the portfolio.
Index construction methodology
It is important to know how the index is constructed /calculated especially if one wants to advance as an index trader. As we discussed, the Index is a composition of many stocks from different sectors which collectively represents the state of the economy. To include a stock in the index it should qualify certain criteria. Once qualified as an index stock, it should continue to qualify on the stated criteria. If it fails to maintain the criteria, the stock gets replaced by another stock which qualifies the prerequisites.
Based on the selection procedure the list of stocks is populated. Each stock in the index should be assigned a certain weightage. Weightage in simpler terms define how much importance a certain stock in the index gets compared to the others. For example if ITC Limited has 7.6% weightage on Nifty 50 index, then it is as good as saying the that the 7.6% of Nifty’s movement can be attributed to ITC.
The obvious question is – How do we assign weights to the stock that make up the Index?
There are many ways to assign weights but the Indian stock exchange follows a method called free float market capitalization. The weights are assigned based on the free float market capitalization of the company, larger the market capitalization, higher the weight.
Free float market capitalization is the product of total number of shares outstanding in the market, and the price of the stock.
For example company ABC has a total of 100 shares outstanding in the market, and the stock price is at 50 then the free float market cap of ABC is 100*50 = Rs.5,000.
At the time of writing this chapter, the following are the 50 stocks in Nifty as per their weightage…
Sl No | Name of the company | Industry | Weightage (%) |
---|---|---|---|
01 | ITC Limited | Cigarettes | 7.60 |
02 | ICICI Bank Ltd | Banks | 6.55 |
03 | HDFC Ltd | Housing Finance | 6.45 |
04 | Reliance Industry Ltd | Refineries | 6.37 |
05 | Infosys Ltd | Computer Software | 6.26 |
06 | HDFC Bank Ltd | Banks | 5.98 |
07 | TCS Ltd | Computer Software | 5.08 |
08 | L&T Ltd | Engineering | 4.72 |
09 | Tata Motors Ltd | Automobile | 3.09 |
10 | SBI Ltd | Banks | 2.90 |
11 | ONGC Ltd | Oil Exploration | 2.73 |
12 | Axis Bank Ltd | Banks | 2.50 |
13 | Sun Pharma Ltd | Pharmaceuticals | 2.29 |
14 | M&M Ltd | Automobiles | 2.13 |
15 | HUL Ltd | FMCG | 1.87 |
16 | Bharti Airtel Ltd | Telecom Services | 1.70 |
17 | HCL Technologies Ltd | Computer Software | 1.61 |
18 | Tata Steel Ltd | Metal -Steel | 1.42 |
19 | Kotak Mahindra Bank Ltd | Banks | 1.40 |
20 | Sesa Sterlite Ltd | Mining | 1.38 |
21 | Dr.Reddy’s Lab Ltd | Pharmaceuticals | 1.37 |
22 | Wipro Ltd | Computer Software | 1.37 |
23 | Maruti Suzuki India Ltd | Automobile | 1.29 |
24 | Tech Mahindra Ltd | Computer Software | 1.24 |
25 | Hero Motocorp Ltd | Automobile | 1.20 |
26 | NTPC Ltd | Power | 1.15 |
27 | Power Grid Corp Ltd | Power | 1.13 |
28 | Asian Paints Ltd | Paints | 1.10 |
29 | Lupin Ltd | Pharmaceuticals | 1.09 |
30 | Bajaj Auto Ltd | Automobile | 1.07 |
31 | Hindalco Industries Ltd | Metal – Aluminum | 0.95 |
32 | Ultratech Cements Ltd | Cements | 0.95 |
33 | Indusind Bank Ltd | Banks | 0.94 |
34 | Coal India Ltd | Mining | 0.93 |
35 | Cipla Ltd | Pharmaceuticals | 0.89 |
36 | BHEL Ltd | Electrical Equipment | 0.79 |
37 | Grasim Industries Ltd | Cements | 0.79 |
38 | Gail (India) Ltd | Gas | 0.78 |
39 | IDFC Ltd | Financial Services | 0.74 |
40 | Cairn India Ltd | Oil Exploration | 0.72 |
41 | United Sprits Ltd | Distillery | 0.70 |
42 | Tata Power Co.Ltd | Power | 0.68 |
43 | Bank of Baroda | Banks | 0.63 |
44 | Ambuja Cements Ltd | Cements | 0.61 |
45 | BPCL | Refineries | 0.58 |
46 | Punjab National Bank | Banks | 0.55 |
47 | NMDC Ltd | Mining | 0.52 |
48 | ACC Ltd | Cements | 0.50 |
49 | Jindal Steel & Power | Steel | 0.38 |
50 | DLF Ltd | Construction | 0.34 |
As you can see, ITC Ltd has the highest weightage. This means the Nifty index is most sensitive to price changes in ITC Ltd, and least sensitive to price changes in DLF Ltd.
Sector specific indices
While the Sensex and Nifty represent the broader markets there are certain indices that represents specific sectors. These are called the sectoral indices. For example the Bank Nifty on NSE represents the mood specific to the banking industry. The CNX IT on NSE represents the behavior of all the IT stocks in the stock markets. Both BSE and NSE have sector specific indexes. The construction and maintenance of these indices is similar to the other major indices.
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