Increasing unusual option volume: NOV MULN BBD SMMT BIRK KOS VSTS

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National Oilwell Varco Inc. (NYSE: NOV) Delayed: 19.88 +0.36 (1.84%)
Previous Close $19.52    52 Week High $38.89 
Open $19.56    52 Week Low $25.74 
Day High $19.89    P/E 3.65 
Day Low $19.44    EPS $5.44 
Volume 983,924