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Technical Analysis

Technical analysis is the art and science of examining stock chart data and predicting future moves on the stock market.  Investors who use this style of analysis are often unconcerned about the nature or value of the companies they trade stocks in. Their holdings are usually short-term – once their projected profit is reached they drop the stock.

The basis for technical analysis is the belief that stock prices move in predictable patterns. All the factors that influence price movement – company performance, the general state of the economy, natural disasters – are supposedly reflected in the stock market with great efficiency. This efficiency, coupled with historical trends produces movements that can be analyzed and applied to future stock market movements.

Technical analysis is not intended for long-term investments because fundamental information concerning a company's potential for growth is not taken into account. Trades must be entered and exited at precise times, so technical analysts need to spend a great deal of time watching market movements. 

Investors can take advantage of both upswings and downswings in price by going either long or short. Stop-loss orders limit losses in the event that the market does not move as expected. 

There are many tools available to the technical analyst. Literally hundreds of stock patterns have been developed over time. Most of them, however, rely on the basic concepts of 'support' and 'resistance'. Support is the level that downward prices are expected to rise from, and Resistance is the level that upward prices are expected to reach before falling again. In other words, prices tend to bounce once they have hit support or resistance levels.

Charts

Technical analysis relies heavily on charts for tracking market movements. Bar charts are the most commonly used. They consist of vertical bars representing a particular time period – weekly, daily, hourly, or even by the minute. The top of each bar shows the highest price for the period, the bottom is the lowest price, and the small bar to the right is the opening price and the small bar to the left is the closing price. A great deal of information can be seen in glancing at bar charts. Long bars indicate a large price spread and the position of the side bars shows whether the price rose or dropped and also the spread between opening and closing prices.

A variation on the bar chart is the candlestick chart. These charts use solid bodies to indicate the variation between opening and closing prices and the lines (shadows) that extend above and below the body indicate the highest and lowest prices respectively. Candlestick bodies are coloured black or red if the closing price was lower than the previous period or white or green if the price closed higher. Candlesticks form various shapes that can indicate market movement. A green body with short shadows is bullish – the stock opened near its low and closed near its high. Conversely, a red body with short shadows is bearish – the stock opened near the high and closed near the low. These are only two of the more than 20 patterns that can be formed by candlesticks. 

When glancing at charts the untrained eye may simply see random movements from one day to the next. Trained analysts, however, see patterns that are used to predict future movements of stock prices. There are hundreds of different indicators and patterns that can be applied. There is no one single reliable indicator, but when taken into consideration with others, investors can be quite successful in predicting price movements.

Patterns

One of the most popular patterns is Cup and Handle. Prices start out relatively high then dip and come back up (the cup). They finally level out for a period (handle) before making a breakout – a sudden rise in price. Investors who buy on the handle can make good profits.

Another popular pattern is Head and Shoulders. This is formed by a peak (first shoulder) followed by a dip and then a higher peak (the head) followed again by a dip and a rise (the second shoulder). This is taken to be a bearish pattern with prices to fall substantially after the second shoulder.

Indicators

Moving Average
The most popular indicator is the moving average. This shows the average price over a period of time. For a 30 day moving average you add the closing prices for each of the 30 days and divide by 30. The most common averages are 20, 30, 50, 100, and 200 days. Longer time spans are less affected by daily price fluctuations. A moving average is plotted as a line on a graph of price changes. When prices fall below the moving average they have a tendency to keep on falling. Conversely, when prices rise above the moving average they tend to keep on rising.

Relative Strength Index (RSI)
This indicator compares the number of days a stock finishes up with the number of days it finishes down. It is calculated for a certain time span – usually between 9 and 15 days. The average number of up days is divided by the average number of down days. This number is added to one and the result is used to divide 100. This number is subtracted from 100. The RSI has a range between 0 and 100. A RSI of 70 or above can indicate a stock which is overbought and due for a fall in price. When the RSI falls below 30 the stock may be oversold and is a good time to buy. These numbers are not absolute – they can vary depending on whether the market is bullish or bearish. RSI charted over longer periods tend to show less extremes of movement. Looking at historical charts over a period of a year or so can give a good indicator of how a stock price moves in relation to its RSI.

Money Flow Index (MFI)
The RSI is calculated by following stock prices, but the Money Flow Index (MFI) takes into account the number of shares traded as well as the price. The range is from 0 to 100 and just like the RSI, an MFI of 70 is an indicator to sell and an MFI of 30 is an indicator to buy. Also like the RSI, when charted over longer periods of time the MFI can be more accurate as an indicator.

Bollinger Bands
This indicator is plotted as a grouping of 3 lines. The upper and lower lines are plotted according to market volatility. When the market is volatile the space between these lines widens and during times of less volatility the lines come closer together. The middle line is the simple moving average between the two outer lines (bands). As prices move closer to the lower band the stronger the indication is that the stock is oversold – the price should soon rise. As prices rise to the higher band the stock becomes more overbought meaning prices should fall. Bollinger bands are often used by investors to confirm other indicators. The wise technical analyst will always use a number of indicators before making a decision to trade a particular stock.