It looks like your feed was better than Zeev's. And it looks like most of those trades occured on regional exchanges. It is my understanding that the market in NYSE stocks pre and afterhours is very thin. I know Ameritrade won't let you put in and order with extended hours for NYSE stocks. You may be able to get around that by doing a direct order, but then you have to try and get a quote. Some brokers are obviously better than others.
I think the wrong date i because they updated that on the site, they also "group" trades by time intervals, your feed is individual trades... I was just making the point that sometimes a low bid can get filled when other intervening bids disappear, a strange thing for a stock like IBM....
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