For me, I think it would be better if buy more coins now that the value are low, buying coins will help the price to go up and you also have the chance to earn more profit, because you bought a coin in a low price and you can sell it in a much higher price, I think that is a good way to respond to this kind of market.
It depends of how much you buy those coins. If you just buy a dust, it doesn't help price to going up.
There is a news that whalers are holding their assets and bought more to collect more and more profit, we don't know when but I hope will get recovered soon.