I said it briefly at $532/BTC today. It just dropped down to $520. if you had a large investment (~50 Bitcoins), so that makes a big difference in a few thousand dollars...
Should i keep it for a little longer and hope it jumps again?
Or sell now as it seems to have already peaked?
Well, once you said that bitcoin really took off and went to $590. Right now we're seeing minor corrections back to $570-$580. But the general trend is still up up up. I haven't got 50 btc, but the price still affects my investments.
I think we're going on a ride, boys
and girls 
The halving isn't even here yet...