Dr Alexander Elder describes Swing Trading best in his book "Come Into My Trading Room: A Complete Guide to Trading".
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Markets spend most of their time going nowhere. They rally a few days, pause, decline a few days, and rally again. Small swings-weekly, daily or hourly-are more common than big trends. By the end of the month the market may be higher or lower, but it has traveled up and down several times. Newcomers get shaken out, while professionals enjoy the short rides.
Markets' tendency to swing above and below value has been statistically confirmed by several researchers. Swing trading means buying normalcy and selling mania ( buy near rising moving average, sell near the upper channel line) or shorting normalcy and covering depression (sell short near the falling moving average and cover at the lower channel line).
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