Most likely there has been positive news on the ETF (I didn't see any, but I'm not following the news closely). Anyway, the short fall after the initial rise was probably from people who thought that this was a fluke and their last chance to sell their BTC for a decent price. How stupid of them 
Onkel Paul
Onkel Paul
News will be on Monday. It is just speculation I think price for BTC will raise til Monday. On Monday will no matter what will get decided price corrected to normal value.