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Written and copyright © 2010-2013 by Thomas N. Bulkowski. All rights reserved.
Trendline mirrors seem to reflect price across a trendline. That's useful when trying to predict how far price will move in the future.

The figure shows an example of a trendline mirror in Boeing on the daily scale.
Notice how the vertical distance at A mirrors the drop to D, not in shape but in extent. The reflection isn't a smooth one, but that's ok. It's the distance that interests us most (well, me, anyway).
The BA move upward reflects across the trendline almost exactly to CD.
To use this method, starting from the breakout, C, find the highest distance from the most recent peak to the trendline directly below. That's the AB distance.
From the breakout
apply this distance downward to get a price target (the price at C minus the AB distance). That method works 63% of the time. Thus, you can multiply the AB height by 63%
and subtract that from the breakout (C) to get a target that price will reach over 90% of the time. Many of you will know this technique as the trendline measure rule.
Look for trendline mirrors in finer stores nationwide.
-- Thomas Bulkowski
Written and copyright © 2010-2013 by Thomas N. Bulkowski. All rights reserved. Worst month of the year for downhill skiing: August, but the lines are shortest.
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