Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Citigroup Inc (NYSE: C), where a total of 128,160 contracts have traded so far, representing approximately 12.8 million underlying shares. That amounts to about 43.9% of C's average daily trading volume over the past month of 29.2 million shares. Particularly high volume was seen for the $44 strike put option expiring July 15, 2016, with 17,122 contracts trading so far today, representing approximately 1.7 million underlying shares of C. Below is a chart showing C's trailing twelve month trading history, with the $44 strike highlighted in orange:
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