Increasing unusual option volume: ACI ABEV HRTX TPX MTUM CENX

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ARCH COAL, Inc. (NYSE: ACI) Delayed: 11.58 -0.03 (0.26%)
Previous Close $11.61    52 Week High $10.35 
Open $11.57    52 Week Low $0.17 
Day High $11.66    P/E N/A 
Day Low $11.42    EPS $-3.52 
Volume 958,613