BTC levels are strong, it is very common to have retracement and it is healthy as well. After the Futures introduction, we have to get ready for big falls as it can be manipulated easily.
Just an Illustration:
To hold Long in futures, 47% margin has to paid ie., for 100k contract (close to 6 BTC), just pay 47k as margin and have a 100BTC wall on GDAX can help to push many folds and make huge money on Futures.