Hint: large as nation-states.
You mean banks? pretty hard to believe
Huh? no. Ok i will spill the beans to my friends @ bitcointalk:
Some failing nations (argentina/Portugal) have 100s of mills worth in USD sitting in the Gox-vault. I believe/know they will UNLOAD soon (buy btc).
Trust me on this, you will not be disappoint.
PS:
After deluge (if you buy now as i advise) contact me about becoming a ultranode. We could use a few more.