Add BitMarket.eu to the list. From another thread:
Earlier this year, I had this "genius" idea which led me to making a fatal mistake. I thought I could provide a hedge fund service for Bitmarket users.
[...]
For the record - there are 20161 19980 BTC missing
Will do. I'm a bit busy right now, and there are a few more to catch up on, but this seems like a huge mistake so it will be prioritized.