Thanks for the post chain. I as well have been in longer than I would have thought. Its not the 500 share buy at the end of the day that intrigues me its the apparent support of the sp in a particular range. the low is approximatley 21 and the high is 25. If the sp looks like it may move above 25 big blocks of shares show up on the ask side pressuring the sp downward at 21 the large blocks come out on the bid side and push the sp back up There have been times when the same market id will be attempting to buy 20000 shares at 23 and selling 30000 at 25.

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