Most news I have read since last week is pointing the rise of bitcoins due to upcoming regulations of Exchange Traded fund by United States Security commission.
Yes that's the major event that everyone is waiting on August so the price of bitcoin is rising.
I think the trust of bitcoins is going to increase and as a result there is a demand of bitcoins which is causing it to move up.
People who are holding alts are FOMOing at this moment and they are sacrificing their alts and start to convert it to bitcoin so if ever bitcoin gets an approval, they have more bitcoin.
It's also believed that this is the end of the bearish market so it's either of the two.