Antero Resources Corp (NYSE: AR)

Antero Resources Corporation, an independent oil and natural gas company, acquires, explores, and develops natural gas, natural gas liquids, and oil properties in the United States. As of December 31, 2014, the company had 543,000 net acres of oil and gas properties located in the Appalachian Basin in West Virginia, Ohio, and Pennsylvania. It also owns and operates 153 miles of gas gathering pipelines in the Marcellus Shale; and 96 miles of low-pressure, high-pressure, and condensate pipelines in the Utica Shale. The company was formerly known as Antero Resources Appalachian Corporation and changed its name to Antero Resources Corporation in June 2013. Antero Resources Corporation was founded in 2002 and is headquartered in Denver, Colorado.
Take a look at the 1-year chart of Antero (NYSE: AR) below with added notations:

AR has been declining since May, but most recently the stock has been trading in a sideways move. While in that sideways move, the stock has formed a common pattern known as a rectangle. A minimum of (2) successful tests of the support and (2) successful tests of the resistance will give you the pattern.
AR’s rectangle pattern has formed a resistance a $27 (red), and a $20 support (green). At some point the stock will have to break one of the two levels.

The Tale of the Tape: AR is trading within a rectangle pattern. The possible long positions on the stock would be either on a pullback to $20 or on a breakout above $27. The ideal short opportunity would be on a break below $20.