Flip, unfortunately I don't have an idea, mate. I would expect it to be quite a bit more than in November 2013. NWBO's profile has risen more than a little since then.
I added some October calls, in addition to the shares I bought today. And then I tuned out :-) Must commend the MMs, though. A job well done by them. If we don't see anything pre-market tomorrow, I think the shorts will be emboldened even more, given the Friday AH scare is something that afflicts most people, especially short-term traders.