While it could have been an AON order, I am not so sure if this was the case. Most of the time when a investor is trying to buy or sell a large number of shares, they simply do it in small blocks to keep the price at the same level and to keep from scaring other investors that might panic and sell off too if they see a big sell order go through. Even the MMs do it this way, or use ECNs to hide their orders. The only time you really see a MM place a big buy or sell order is when they want you to, which means they are about to set the stock up for either a run or a sell off.
Also, I am not sure if there was enough demand for a MM to buy a full 2.3 million shares in one single block today at that time. Might have been though.
In anycase, it really doesn't matter what this sell was or why who ever placed it did. Anytime a stock goes up alot, you have these. It's just to be expected. When news comes out, this will shoot up alot, but there will be plenty of people cashing out with big sell orders too. Of course the buy volume will be so strong it wont really matter then. But at some point, after the run starts to dry up, there will be alot of people profit taking and the pps will drop. Again this is to be fully expected. The only question will be how much will it pull back. Anything less than 65% and we will be good to go!
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