Increasing unusual put option volume: SOLS ALL ACI PENG HSAI WBD MTUM SBLK

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ARCH COAL, Inc. (NYSE: ACI) Delayed: 12.35 -0.21 (1.67%)
Previous Close $12.56    52 Week High $10.35 
Open $12.54    52 Week Low $0.17 
Day High $12.60    P/E N/A 
Day Low $12.32    EPS $-3.52 
Volume 15,300,978