Stochastics
Stochastic studies, or oscillators, are another useful tool for monitoring the expected sustainability of a trend. They provide a trader with information about the closing price in the current trading period relative to the prior performance of the instrument being analysed.
Stochastics are measured and represented by two different lines, %K and %D and are plotted on a scale ranging from 0 to 100. Indications above 80 represent strong upward movement while level indications below 20 represent strong downward movements. The mathematics behind the studies are not as important as knowing what the stochastics are telling you. The %K line is the faster, more sensitive indicator while the %D line takes more time to turn. When the %K line crosses over the %D line, this could be an indication that a market is about to reverse course. Stochastic studies are not useful in choppy, sideways markets. At times when prices are fluctuating in a narrow range, the %K and %D lines might be crossing many different times and will be telling you nothing more than the market is moving sideways.
Stochastics are most useful in measuring the strength of a trend and as augurs of a coming reversal in prices. When prices are making new highs or lows and your stochastics are doing the same, you can be reasonably certain that the trend will continue. On the other hand, many traders finds that the best trading opportunity comes when their stochastic indicator is flattening out or moving in the opposite direction of prices. When these divergences occur, it’s time to book profits and/or to establish a position in the opposite direction of the prior trend.
As should always be the case when using any technical tool, do not act on the first signal you see. Wait at least one or two trading sessions for confirmation of what the study is indicating before you commit to a position.
Relative Strength Index (RSI)
RSIÂ measures the momentum of price movements. It is also plotted on a scale ranging from 0 to 100. Traders will tend to look at RSI readings over 80 as an indicator of a market that is overbought or susceptible to a downturn, and readings under 20 as a market that is oversold or ready to turn higher.
This logic therefore implies that prices cannot rise or fall forever and that by using an RSI study, one can determine with a reasonable degree of certainty when a reversal will come about. However, be very wary of trading on RSI studies alone. In many instances, an RSI can remain at very lofty or sunken levels for quite a while without prices reversing course. At these times, the RSI is simply telling you that a market is quite strong or quite weak and shows no signs of changing course.
RSI studies can be adjusted to whatever time sensitivity a trader feels necessary for his or her particular style. For instance, a 5-day RSI will be very sensitive and will tend to give many more signals, not all of them sustainable, than say a 21-day RSI, which will tend to be less choppy. As with other studies, try a variety of time periods for the currency that you are trading based on your trading style. Longer term, position type traders, will tend to find that shorter time frames used for an RSI (or any other study for that matter) will give too many signals and will result in over-trading. On the other hand, shorter time frames will probably be ideal for day-traders trying to capture many shorter-term price fluctuations.
As with stochastics, look for divergences between prices and the RSI. If your RSI turns up in a slumping market or turns down during a bull run, this could be a good indication that a reversal is just around the corner. Wait for confirmation before you act on divergent indications from your RSI studies.
Add comment