So assuming you are the 30,326 buyer @ 20.5 (just assuming :D) &...

So assuming you are the 30,326 buyer @ 20.5 (just assuming ) & assuming that the buyers on the top 3 lines are all genuine, individual, non-aligned buyers .... I think it would be reasonable to assume that they have some level of confidence that that the current sp is undervalued & give the spike (in unison) of their want to purchase (ie bids), it would also be reasonable to assume that they feel that the sp is either at or very near the bottom.

So why is it, do you think, that none have taken out the 10,ooo seller @ 21 cents .... particularly as supply at that price level is very tight ?
After all, in the case of the 30,326 buyer, the difference between filling the order at 20.5 & 21 cents is around $150 .... surely an inconsequential amount in the projected scheme of things.