Dumper have infinity btcd
It is actually more about not enough buying power, not whale's dumping; if someone dumps 1 % of Total BTCD in a day, the market will be doomed.
I don't know why only BTCD is not coupling with other SuperNET assets, which are doing very well and reacting accordingly to good news/media coverage.
In my theory, it is just a vicious circle:
BTCD has been hidden behind NXT & UNITY -> Potential SuperNET buyers will buy NXT or UNITY instead of BTCD -> Less buying support -> Down trend in price -> BTCD becomes less attractive -> Potential SuperNET buyers will buy NXT or UNITY instead of BTCD -> ...
But as long as BTCD stays with SuperNET and current development plan is kept, it should rise and fall with SuperNET.
SuperNET hasn't fully launched yet so you can take advantage of current low price as a chance to buy low, if you believe in the future of SuperNET.
However, cryptocurrency in general hasn't been doing very well these days and you should be willing to bear for the long haul, which doesn't guarantee happy ending.
All in all, it depends on your risk-appetite and perspectives on BTCD.