a hedge fund should have some strategy. If they just buy & hold, heck you can do that yourself
I agree, however GABI hasn't even launched yet. The question at hand (IMO) is have they already started accumulating, and if so are they primarily doing it OTC? I personally wouldn't expect to see a legitimate hedge fund actively, and knowingly, manipulating a market to such an extent to take their position. I'm no wall street guru, but I'd think that kind of activity is illegal.
There are zero rules against that in the BTC market right now. Perhaps that'll change but then again there aren't any rules against it in any forex market which is where Bitcoin may end up.