Rigs5 Dec 2012 19:28
Always possible, but I think in this case we can probably rule it out.
Yesterday's total trades were 6k less than this single trade. Also here were a couple of rather big trades today straight to the bid at 10k each which means someone was putting up large offers of the type we don't often see. Could be a coincidence, but given the size and timing I doubt it.
This is quite a significant (positive) trade, I'm surprised people are not talking about it more.