The short term bitcoin price is unpredictable. Not many people expect the price to rise so much in the last 4 weeks. There are many reasons behind this rise. One could be the open of the Gemini.
2-During October the 3 biggest credit companies in the world announced investments in bitcoin-related companies additionallly 13 banks formed a partnership to learn and implement blockchain technology onto the current banking system
3-Gavin Andersen lost a huge amount of credibility from core devs after that whole bullshit about block sizes.
Reasons don't come necessarily in this order.
Why do you think Gemini is having such an impact ?
Is it attracting institutional clients already ?
Gemini is regulated. So it will attract institutional investment. But the recent volume is too small to suggest institutions are already in.