Round numbers like $10k are always tricky to pass - first of all is kind of psychological barrier and most people are setting some sort of "sell goal".
You see - when bitcoin's price is approaching 10k traders would like to collect the profit by selling coins.  That is why it is harder for any coins to reach certain price threshold.
But fret not, we will get to 10k and far beyond that - we entered a solid bullish market, so until some random negative news will hit us - we are fine.