The price is stable as there's just not that much demand for bitcoins at the moment. Trading activity is dominated by bots throwing bitcoins at one another and possibly extracting a small profit. The larger swing traders aren't interested as there aren't any swings to be had. It's a game of 'you go first' at the moment.
Oh there is demand ... just not all of it on the exchanges.
How much demand is there, and where is it? More data is required to support your statement.
) and on the other hand sellers are waiting for block reward halving and accumulating their bitcoins. So there are lower volumes and therefore lower volatility. 
