Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Western Digital Corp (NASD: WDC), where a total of 32,157 contracts have traded so far, representing approximately 3.2 million underlying shares. That amounts to about 42.5% of WDC’s average daily trading volume over the past month of 7.6 million shares. Especially high volume was seen for the $47.50 strike call option expiring October 21, 2016, with 14,646 contracts trading so far today, representing approximately 1.5 million underlying shares of WDC.