The airdrop was announced the 11/12 and it went really high since that time.
It seems to have calm down during the last 6 days, if you want to enter that trade we must wait for the price to go around those accumulation zone
Expect price to go down after airdrop.
1D view :
Also, like the Ignis airdrop for NXT holders, the price of NXT/BTC went down a few days before the airdrop so we can expect the same move here.