Summed Rate Of Change (KST) by Martin J. Pring
In the August Stocks & Commodities, noted technician Martin Pring presented smoothed rate of change indicators as a method to identify both the trend and reversals of trend in the markets. He pointed out that different rate of change measurements could lag important market turns due to the presence of different time cycles. Here, Pring presents his method of combining various rate of change indicators for enhanced trend and reversal of trend identification.
Previously, I pointed out that price trends in financial markets are influenced by the interaction of many
different time cycles. Figure 1 shows several smoothed rates of change (ROC), each reflecting a different
cycle. Major market turning points usually occur when all three indicators reverse direction
simultaneously. Similarly, trading range markets have a habit of occurring when they are in conflict.
These three indicators do not reflect every cycle, but they do give a more revealing picture than simply
using one indicator on its own.
Movements of the nine-month moving average of the 24-month rate of change in the bottom panel of
Figure 1 closely monitor the primary bull and bear swings of the market itself. Signals of trend reversals
are often given well after the fact, however, because it is slow to reverse direction. One way around this
is to combine four smoothed rates of change into one indicator, weighting each one in rough proportion to its time span. (See sidebar, "The KST.") This enables the longer-term smoothed momentum to turn
faster but keeps whipsaw signals to a minimum. Because such an indicator also includes several rates of
change covering different time spans, it also reflects the interaction of several time cycles.