Chart Patterns & Algorithmic Trader (25) EFX Parabolic Arc Pattern Reviewed in CPAT 1/1/18 EFX (W) is trading in Parabolic Arc from 05/22/2009 (low: 19.38) to 07/28/2017 (high: 147.02). Parabolic Arc patterns are long-term patterns, but most of the upside parabolic patterns return to at least 50-62% of its prior rise in a correction mode. www.surinotes.com
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