It appears he doesn't wish to remain anonymous:
I wish to avoid the open market, the fees involved, and the affect it would have being swapped in such a volume.
Listening to offers through the end of the day Friday the 26th. I will have 185BTC to work with.
Please only make offers if you hold a minimum of 1,000 CLAM. Please do not waste my time, I will not waste yours. Let me know your best price up front, I will be snapping up the best priced deals first with a preference on volume.
If you prefer to message on Just-Dice, my name there is "Scabby" user ID 44635
So you can deal with him directly. I'm of course willing to escrow trades.
Why does someone want 185BTC worth of CLAMS? Is a whale about to bet on Just-Dice? As an investor it is a bit worrying, there isn't much else people do with CLAMS than bet on JD!