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Here's a look at the long-term probable support area, blow the red line:
In this chart we see a "declining wedge" pattern, which normally resolves upward.
It'd be safer, on a technical basis, to buy if it closes above $35, but considering the high yield it pays, at least for now, we're happy to buy some and perhaps more if it drops materially.
WPZ closed today at $29.22
Disclosure: I am/we are long WPZ.