So far this has not proven to be a winning trade, but the largest single name stock option volume by a landslide belongs to Halliburton, where over 65,000 of the November 15th $20 strike calls have traded so far today. The vast majority traded between $.78-.$87 earlier this morning with the stock either side of $19 per share. Implied vol has moved higher to the $46-47% zone. BUT, with the sell off in the market, HAL has slid along with everything else, and today’s buyers (myself included) are now underwater with the stock at $18.45 and the options trading around $.63. Nevertheless this is very curious, and enormous volume, in a very tough sector. It does not appear from watching the activity that any type of spread is involved, and the outright stock trading volume is relatively muted compared to average daily volume.