I won't be too quick to come to a conclusion on what this development is trying to say as it could mean many things. Lets not forget people equally hold there coins on exchange so their activities within the exchange can't be monitored as it doesn't get recorded in an open ledger (blockchain)
I do not know what is going to happen in the future, I never do, but I will not make my decision based on volume for sure, it is not a good indicator, there are tons of other indicators to go with and volume is not one of them. What does it give you, people not buying/selling? I mean it does mean people are not buying but as much as that we also have people are not selling at the same place as well, if it was a high on selling then the price wouldn't be up now and sellers would drop the price to sell more and more, so it is just... stable now that's it.