Steem is always being sold off by whales in order to jump into other coins and tokens, it is very liquid in that fashion. Also, the currency inflation rate is awfully high, and there is an infinite supply, so don't expect it to go too high.
When millions of people start using the different Steem driven platforms, the value will increase, but not by much, because remember, the supply will always be printed more and more every year.
Most big powerdowns by whales stopped a months ago. They expect a huge up in price in the coming year.