Oh darn, Goomboo, I was hoping that link was going to a BTCUSD firm. Have you found any legit investment funds trading BTC yet?
Nope, and I don't see a reason to do so. There isn't enough volume in this market to earn a respectable return on a respectable amount of capital. If you are trying to invest, I seriously suggest growing your "real money" through a legal venue until BTC becomes a more liquid instrument. Bitcoin trades at BEST, what? $1,000,000 per day?
The futures market for the EUR/USD trades about $66 billion per dayhttp://www.cmegroup.com/trading/fx/g10/euro-fx_quotes_globex.html
While the spot market for EUR/USD trades over a trillion dollars per dayhttp://en.wikipedia.org/wiki/Foreign_exchange_market
These are among the most liquid markets world wide. Taken these requirements, you can't trade even well respected stocks. And many established small commodities trade below BTC/USD volume.
Also your definition of legal seems to depend on US law. It wasn't mentioned where the fund is located, and legality may depend on client location too.
You may be a professional, and this may make you blind to new dynamics in upcoming developments. I am not immune to this myself, in the field of IT.
*Trust* is a much more universal deterrent to investing here, and one why I would not consider this.