Another case of BB narrowing near exponential trendlines.

Here, on 05/13/2010, the two exponential trendlines were at 1163.48 and 1153.77. The $SPX price action was already above them during the narrowing process, and it broke downward rather than upward.

Here was yesterday's action (07/13/2010) for comparison:


The action here, shows the somewhat greater complexity with three trendlines interacting instead of only two, as in the example at the top.