Technical Analysis 105: Important Tools - II

Earlier posts of Technical Analysis:

• Technical Analysis 101
• Technical Analysis 102
• Technical Analysis 103: Trends and Channels
• Technical Analysis 104: Important Tools – I

There are numerous other tools which are used in Technical Analysis – (a) Oscillators, (b) Stochastics, (c) RSI, (d) Moving Average Convergence Divergence, and (e) Bollinger Bands, just to name a few. However, I do not think I would be able to follow so many of the tools, and have identified two additional tools which I believe I could track:

1. Relative Strength Indicator (RSI): Very simply put, it measures the relative strength of the overall market, and has readings between 0 and 100. Usually, it is computed as

RSI = 100 - {100 / (1 + RS)},
where RS = Average of N period’s up moves / Average of N period’s down moves

RSI would be more than 50 if the average up moves are greater than the down moves, and would reach 100 (theoretically) when all days are up-days. Usually N is taken as 13 or 14. An RSI value above 70 is considered signs of an over-bought market, and RSI value below 30 indicates oversold markets. However, one should also look at the price charts in addition. If the prices are forming a double top, whereas the RSI isn’t, then it may be a bearish signal. Similarly, in situation when RSI is making a double top, and prices aren’t,we might see an up-move in prices.

2. Bollinger Bands: These are bands placed 1.5 to 2 standard deviations up and below a simple moving average line. For example, if we are looking at a 20 DMA line, then its Bollinger band would be 2 sigma up and below the 20 DMA line. Usually, the prices would remain within the band, however, the breakout is a strong bullish/bearish signal. If a breakout happens on the upside, its a bullish sign. And only when it returns back to the band, its a sign of reversal.