The impulse system : The Impulse System combines two simple but powerful indicators. One measures market inertia, the other its momentum. When both point in the same direction, they identify an impulse worth following. We get an entry signal when both indicators get in gear. The Impulse System uses an exponential moving average to find uptrends and downtrends. When the EMA rises, it shows that inertia favors the bulls. When EMA falls, inertia works for the bears. The sec- ond component is MACD-Histogram, an oscillator whose slope reflects changes of power among bulls or bears. When MACD-Histogram rises, it shows that bulls are becoming stronger. When it falls, it shows that bears are growing stronger. The Impulse System flags those bars where both the inertia and the momentum point in the same direction. When both the EMA and MACD-Histogram rise, they show that bulls are roaring and the uptrend is accelerating.
The SafeZone Stop : Once in a trade, where should you put your stop? This is one of the hardest questions in technical analysis. After answering it, you’ll face an even harder one—when and where to move that stop with the pas- sage of time. Put a stop too close and it’ll get whacked by some mean- ingless intraday swing. Put it too far, and you’ll have very skimpy protection. The Parabolic System, described in Trading for a Living, tried to tackle this problem by moving stops closer to the market each day, accelerating whenever a stock or a commodity reached a new extreme. The trouble with Parabolic was that it kept moving even if the market stayed flat and often got hit by meaningless noise. SafeZone trails prices with stops tight enough to protect capital but remote enough to keep clear of most random fluctuations. Engineers design filters to suppress noise and allow the signal to come through. If the trend is the signal, then the countertrend motion is the noise. When the trend is up, we can define noise as that part of each day’s range that protrudes below the previous day’s low. When the trend is down, we can define noise as that part of each day’s range that pro- trudes above the previous day’s high. SafeZone measures market noise and places stops at a multiple of noise level away from the market. We can make our lookback period 100 days or so if we want to aver- age long-term market behavior. SafeZone offers an original approach to placing stops. It monitors changes in prices and adapts stops to the current levels of activity. It places stops at individually tailored distances rather than at obvious support and resistance levels.
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