Low trade of volume cause of many factor's no.1is the value of coins in the market is drop down,second is the investor sell their coins in low price no one hoard it.no.3 because of coming hardfork people will panic,and they sell all there investment .but all this things will be controllable by staying calm and wait for the proper time in trading.
Yes I agree with you. There are many ways that you said about low trade of volume. But all of them just the prediction. You have to keep calm and get more information to give your decision.