Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Ambarella, Inc. (NASD: AMBA), where a total of 3,954 contracts have traded so far, representing approximately 395,400 underlying shares. That amounts to about 44.7% of AMBA’s average daily trading volume over the past month of 883,580 shares. Particularly high volume was seen for the $47.50 strike put option expiring August 19, 2016, with 2,091 contracts trading so far today, representing approximately 209,100 underlying shares of AMBA.