Showing posts with label cost averaging. Show all posts
Showing posts with label cost averaging. Show all posts

Thursday, September 2, 2010

Is it a good strategy to ‘average down’ when the price of a stock starts to fall?

The short answer is ‘NO’. Many small investors lose money by trying to ‘average down’ when the price of a stock, which they bought at higher levels, start to fall. How do I know? By the emails I receive from readers and the questions I hear on business TV channels.

Here is a recent email:’I bought Bartronics at an average price of 138. Now it is falling. What should I do?’ Reading between the lines, one can guess that the investor bought at a higher level than 138 and bought more as the price fell, to ‘average down’.

I wrote two posts on Bartronics – first in Jun ‘09 when the stock closed at 165 and the second in Mar ‘10 when the stock closed at 150. On both occasions, investors were advised to get out before it was too late, because the fundamentals of the company were poor. So, I referred the investor to my earlier posts.

The response was: ‘Thanks, I’ll sell Bartronics tomorrow at whatever price I can get, and reinvest in Punj Lloyd or Suzlon.’ I wrote back immediately that both those stocks should be avoided like the plague!

Why? Instead of providing 1000 words of explanation, I’ll take recourse to some pictures:

Downtrend_Bartronics_Sep0110

The Bartronics stock tried a brief recovery above the 200 day EMA on decent volumes in Jul ‘10 – setting up a perfect bull trap. The subsequent waterfall-like drop has taken the index well below the 200 day and 50 day EMAs on increasing volumes.

Downtrend_PunjL_Sep0110

The Punj Lloyd stock went briefly above the 200 day EMA back in Jan ‘10, and has since been in a steady decline well below the 200 day EMA – making lower tops and bottoms. Volumes have been higher on down days. Signs of stocks going from stronger to weaker hands.

Downtrend_Suzlon_Sep0110

The Suzlon stock also went above the 200 day EMA in Jan ‘10, and has since fallen continuously – well below the 200 day EMA. Even if you are enamoured by wind energy, stay away from this bag of wind.

Note that while the Sensex has been making new highs for the past year in a bull market, all three stocks are in bear markets, with no end to their bottoms in sight. ‘Averaging down’ on such stocks can only lead to increasing your losses.

As a contrast, here are some other pictures:

Uptrend_Akzo_Sep0110

After a long sideways consolidation, the Akzo Nobel (former ICI India) stock has had a huge upward break out.

Uptrend_ASAL_Sep0110

Automotive Stampings is a small-cap auto ancilliary from the house of Tatas that was rising steadily before a sharp break out on strong volumes.

Uptrend_TataMotors_Sep0110

After making a loss and languishing due to the debt burden of the Jaguar-Land Rover acquisition, the Tata Motors stock has comfortably out-performed the Sensex over the past year.

I am not suggesting that you buy these stocks right away. It is better to be cautious when a stock is near a 52 week high. But here are a couple of thumb rules that can be easily followed by novice investors:

1. When a stock is moving up above a rising 200 day EMA, it is in a bull market. The strategy should be to buy the dips. That means ‘averaging up’. Use a trailing stop-loss to protect your profits.

2. When a stock is moving down below a falling 200 day EMA, it is in a bear market. You don’t make money in a bear market by buying, but by selling. The strategy should be to sell on every rise.

If you can buy the shares back at the next bottom and sell on the following rise, you can make a ton of money. But such a strategy – known as ‘short-selling’  - is not advised for inexperienced investors.

Related Post

Some do's and don'ts about Cost Averaging

Tuesday, December 22, 2009

Some do's and don'ts about Cost Averaging

One of the most common problems that many investors face is whether to sell or to resort to cost averaging when the price of a stock, or the NAV of a mutual fund, drops just after a purchase is made.

A typical question I face goes something like this: "I bought a stock at 80, and when it dropped to 40 I bought some more to bring my average cost price down to 60. Now the stock has dropped below 30. Should I sell to reduce further losses, or buy some more to bring the average cost down further, or just hold on till I get back my average cost price of 60?"

There are no easy answers to such a question. The answers will depend on the type of stock, the investor's risk tolerance and holding period. So, instead of providing answers, let me try to list out some do's and don'ts that can better prepare investors to face a similar situation.

Do's about Cost Averaging

  1. Before you pick any stock or fund, do a due-diligence. Find out as much as you can about the track record of the promoter or fund manager and the performance of the stock or fund through bull and bear periods
  2. Learn the rudiments of reading a price chart, or at the very least find out about the 52 week high and low values of the stock/fund; try to buy at, or near, a 52 week low
  3. Decide whether you will indulge in short-term trading or long-term investing
  4. Accordingly, set either a tight stop-loss or a wider stop-loss
  5. If the stop-loss is hit, be ruthless about selling the stock/fund
  6. If steps 4 and 5 are followed, the need for cost averaging won't arise if the price falls after purchase
  7. If the price rises after purchase and you are convinced about the future of the stock/fund, buy more. In other words, average your cost upwards.

Don'ts about Cost Averaging

  1. Don't ever buy a stock/fund just because a friend or colleague or TV analyst has suggested a 'buy'; learn to take responsibility and decide for yourself
  2. Don't buy a stock/fund trading at or near a 52 week high
  3. Don't be overconfident of your stock-picking skills just because you've tasted a few successes; always remember to set a stop-loss - whether you wish to trade or invest
  4. Don't become a long-term investor by default because your trade failed and the loss became too large, and you hesitated about selling at your stop-loss
  5. Never cost average downwards, as a general rule and particularly for mid-cap/small-cap stocks/funds (which tend to fall the most during bear markets)

Please remember that your cost price is known only to you. The market doesn't care two hoots about whether you are making a loss or a profit. So you need to develop an investment style that can minimise loss and maximise profit.

A related problem, though not quite as nerve-wracking, is when the price of a stock (or the NAV of a mutual fund) which hardly moves up or down for a prolonged period starts to move up as soon as an investor gets rid of it!

This problem is quite easily solved if you learn the art of partial profit booking.

Related Posts

How to lose less with a Stop-Loss
About Cost averaging and Value averaging strategies

Thursday, September 24, 2009

About Cost averaging and Value averaging strategies

Following a strategy involving either Cost averaging or Value averaging can lead to significant wealth creation for most investors - specially if followed for a reasonable period of time. These are simple strategies, but require investing discipline.

Cost averaging

Let us say, you are able to save Rs 3000 per month from your income. If you are a novice investor, or, have not yet learned how to pick fundamentally strong stocks, choose an index fund or an index ETF (like Nifty BeES). More experienced investors can choose any of their favourite stocks.

Every month, without fail, buy Rs 3000 worth of index fund/ETF units (or any stock that you have chosen). When the market moves up (bull market), the number of units/shares you get to buy every month will get reduced. If the market moves down, the number of units/shares will be more.

So, if you buy 300 units of Rs 10 in the first month, and the next month the net asset value (NAV) of the unit is Rs 12 - you will buy 250 units. In the third month, if the NAV is Rs 15, you will buy 200 units.

This strategy is identical to the Systematic Investment Plan (SIP) touted as very effective for small investors by most fund houses. Though this is a no-brainer system that any one can follow, it has a drawback. It doesn't work so well in up or down trending markets.

Value averaging

This is a variation to the cost averaging concept, that requires more monitoring. Instead of investing a fixed amount every month, you buy according to a pre-determined value of your portfolio. Let us say, it is Rs 3000 per month.

As in the above example, you buy 300 units @ Rs 10. At the beginning of the second month, if the NAV has increased to Rs 12, then the value of your portfolio has become Rs 3600. Instead of investing Rs 3000, you will invest Rs 2400 - getting 200 units in return. Your total portfolio value becomes Rs 6000.

If at the beginning of the third month, the NAV is Rs 15, then your portfolio value is Rs 7500. So you'll invest only 100 units to reach your goal of Rs 9000 after 3 months. (The actual numbers - and the math - will not be so simple. An Excel spreadsheet should take care of the calculations.)

See the difference? In the Cost averaging (SIP) method, you buy 750 units in 3 months for Rs 9000. In the Value averaging method, you invest Rs 6900 to buy only 600 units. In other words, you invest less when the market is going up. The balance savings of Rs 2100 can be used when the market turns down (bear market).

What happens when the market goes down? Which method will be the better of the two? Why? Are there any drawbacks to the Value averaging strategy?

Ponder about these questions. And get back to me with your opinions and comments.