This is starting to look huge.... I don't think I've ever seen 120k bitcoins on the bid side on mtgoxlive! The ask side looks flat compared to that giant wave.
edit: Comparison of the depths:
20k BTC to 3.38, 20k BTC to 3.10
20k more to 3.75, 20k more to 3.00
Didn't we have a huge bid wall sitting there right before the last "crash" to $2?
Nope, this is what it looked like on Nov. 13th right before the crash from $3 to $2:
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FZ6VzT.png&t=663&c=jMm2hfgxhB4FsA)
Then during the crash, someone instantly and dramatically popped up a huge bidwall at one point:
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2F2Y65X.png&t=663&c=j_Wva1fu59bUcA)
So yeah, one big player has a lot of cash, and all the bids could be the same big player subtlely building up the bid orders. I don't think that's the case, but I wouldn't doubt that half the bid orders is this same big player.