Wow that's a VERY CLEAR path into the "holding address" ! I wasn't able to track my BTC deposit very far as it seemed to get split up after a number of transactions ... however yours looks utterly UNMISTAKABLE !

I wonder if it's because you bought in at the beginning of their operation when there would have been fewer customers due to it being a new 'business' and word hadn't got around yet ? i.e. there would've been fewer Addresses in use back then ...

Can anyone else make a connection to https://blockchain.info/address/1B8XBJ3g7sNZj4AUtJ15UgcfE3waYw7pPL ?