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.