By
Dr. Tamal Datta Chaudhuri
Principal & Professor, Finance and Economics
The
BSE Sensex is a measure of stock market sentiment in India. It is an index made
up of 30 companies, chosen on the basis of their market capitalization. It is
represented by various companies from various sectors. Thus movement in the
Sensex over time and intraday merely reflects movement in prices of shares of
the underlying companies that constitute the Sensex.
It
is thus, perfectly possible, that the Sensex rises but the value of your
portfolio does not improve at all or to that extent. This is because the Sensex
is comprised of only a few companies, and even among them share prices of all
may not rise on a given day. This brings us to the sectoral composition of the
Sensex.
Figure 1
The
sectors represented in the Sensex are banks like SBI & ICICI Bank, auto
companies like Maruti Suzuki, Mahindra & Mahindra, Tata Motors, capital
goods companies like BHEL, IT companies like TCS, Infosys etc. At a given
period of time, not all sectors would perform equally. It depends on the
macroeconomic conditions of India and also of the rest of the world. Domestic
rate of growth and its pattern along with that of the rest of the world would
determine which sector would grow and in turn would get reflected in the stock
prices of companies from that sector.
Figure
1 shows contrasting performance of three sectors in India in the last one year,
i.e. October 2012 to October 2013. Whereas the capital goods index (in brown)
has continuously fallen, the IT index (in green) has increased significantly
since May 2013. The auto sector has overall moved horizontally, at times
picking up and at times falling.
It
is interesting that sectoral performance reflects the inherent characteristics
of the sector. Whereas the auto sector index reflects seasonal pattern of
demand for this sector, the IT index is a reflection of the economic
performance of the rest of the world. The capital goods index is a reflection
of manufacturing sector slowdown of the Indian economy.
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