With app. 1 hour of trading left (Q3), we have app 90,000 of bids at 72 and the same amount of asks at 73. I believe that if the bids hold up fairly well between now and 4:00 P.M., Penson's last trade will be at 73. If there are very few bids left at 72, Penson will try to squueze a last minute trade at 71.
We have an hour to respond, let's have a bit of fun with this till then!
Later