Two big time things I know about Bitcoin:
1) It is manipulated big time.
2) Bitcoin news is usually toxic, big time.
Everything else is just speculation.
Sometimes it doesn't have to be the effect of these two you mentioned.
It's price sometimes can be psychological. A price increase can be triggered by a small price increases, when people notice an increase, they tends to buy quickly as they believe they might profit in it.
Moreover, I don't see the recent increase as an effect of anything. Its more of a normal market growth.