Why the stock market is volatile?

A very good article about the way various economic factors  affect the stock market.Taken from  rediff.com

Last week was bad for the stock  market. After reaching a new high of 8821.84 early on Wednesday, the  Sensex  pulled back dramatically, ending the week at 8491.56.

The immediate  reason for the sell-off is pretty simple - Foreign Institutional Investors have been  net sellers. And since it is FII money which has been driving the market up, any  selling by them is bad news.

But why are FIIs selling?  
It's not just India

The first  thing to understand is that it's not just the Indian stock market that was affected last week.

Consider this: The S&P 500, a broad-based index  of US stocks, lost 2.7% during the week, its biggest weekly drop since April.  

The Nasdaq Composite Index, a US market index for  technology stocks, lost 2.9%, again its biggest weekly loss since April.  

Stocks dropped in Europe as well---market indices for  UK, Germany and France ended the week in the red.

Japan's Nikkei index lost 2.25%, while Australia's  benchmark index lost as much as 4.3% - its biggest weekly drop in four years.  

Other emerging markets in Asia too fell.


What spooked stock markets across the world?  

It began with comments by US Federal Reserve (the US  central bank) officials that inflation is on the rise in the US. That led  analysts to infer that the US Fed will raise interest rates further in its next  two meetings this year.

The Fed has already raised its benchmark Fed Funds  rate (the rate at which it lends to other banks) to 3.75%, in a series of rate  hikes.

That raised several concerns:
1. With  interest rates going up, growth in the US would slow.
2. With  borrowing becoming more expensive, hedge funds would be hit. These are  funds which borrow money in the US at low interest rates to invest in  emerging markets at higher returns.
3.  Mortgage rates in the US would rise, and that could burst the current bubble in  the US housing market.

Now let us look at these factors in detail.  


How does this affect us?  

To understand why higher interest rates in the US are such a  problem for emerging markets like India, consider how the global economy works  at present.

Essentially, low interest rates in the US have  led to a boom in housing.

Many individuals could take loans at low rates to buy  homes.

Those with homes felt richer with the rise in house  prices.

Since the property prices rose, many were able to  raise money on their house property (loans against property).

People were able to refinance their mortgages at  lower rates (take a fresh loan at a lower rate of interest).

Low interest rates also led to increased borrowing of  all kinds, including more credit card debt and other loans.

With this money, the US consumer bought all kinds of  goods and services, and much of these goods and services are produced in  countries like China and India. So the US consumer has been the main engine for  the world economy.

Now consider the other side of the equation.  

What did countries like China do with the money  earned from exporting to the US? They invested it back into US bonds. That extra  demand for US bonds meant that the prices of bonds rose. As a result, their  yields fell.

Yields on bonds move inversely to their price. For  instance, suppose a bond of Rs 100 has an interest rate of 10%. Let's say demand  for that bond increases. When demand increases, prices increase. If the price of  the bond (trading in the debt segment of the stock exchange) goes up to Rs 110,  the yield becomes 10/110 or 9.09%. Conversely, if the price of the bond falls to  Rs 90, the yield goes up to 10/90 or 11.11%.

It is because countries like  China have been ploughing back their money into the US that the yield of the US  10-year bond has not increased in spite of the series of rate hikes by the US  Federal Reserve.

In other words, while the Fed has raised short-term  interest rates, the long-term yields have not followed suit. This has enabled a  virtuous circle of low interest rates, high consumption and strong emerging  market exports to continue.

Another consequence of the low interest rates in the  US has been that many speculators have borrowed cheaply and used the money to  invest in other assets, such as emerging market stocks and bonds. This has driven up the price of these assets (as explained  above).

Also, since yields and interest rates in the US are  low, investors will move their money to be invested in places where returns are  higher.

Why higher US interest rates are a problem?

The worry is that if interest rates now increase too much,  this circle will become a vicious one-----higher interest rates will lead to  money flowing back to the US from emerging markets, consumption in the US will  decline, world growth will slow, and stock markets across the world will  decline, with emerging markets being particularly hard hit.

In 1994, a  series of rate hikes by the Fed had led to money flowing out of emerging  markets, and many bearish analysts have been warning of a repeat of that  scenario ever since the Fed started to raise rates again from last year.  

In fact, the plunge in the Indian market in May last  year, attributed to the election results in which the NDA lost, was actually  part of a meltdown in emerging market stocks due to fears of a Fed rate  hike.

So far, these worries have been unfounded.


Will it be different this time?

One comfort is that the price of oil has also gone  down, and commodity prices too have declined. This will remove some of the  worries about higher inflation.
  
The second source of comfort is that the US long-term  bond yield has still not reached the 4.5% level, which is seen by some analysts  as a signal of danger.
  
Third, although housing prices have declined a bit in  the US, there are no signs of any collapse.

India and the world

As the above analysis shows, what will happen to the  Indian market is largely dependent on what happens to the global markets.  

It also doesn't help that Indian stock prices are now  very high, which means that international money could flow to other stock  markets around the world where the stocks are priced more  reasonably.

However, while FIIs may sell,  local mutual funds have raised a lot of money, and that would be invested back  to the market. Recall that in May, while FII flows were tepid, local mutual  funds continued to buy, providing support to the market.

Nevertheless,  last week's steep drop is a timely reminder to investors about the risks of  investing at these high levels in the market, and the need for a great degree of  caution.
    

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