I think $450 is definitely do-able by end of Nov'2015. $550 by end of Dec'2015. $650 by end of Jan'2016. $1000 by end of Feb'2016. $2500 by end of March'2016. $5000 by end of April'2016. $2500 by end of May'2016. $1000 by end of June'2016. $500 by end of July'2016.
Bitcoin bubbles aren't that gradual. If it bubbles, then all of you are in for a wild ride this November/December.
Also, never say what Bitcoin can't do. It has already proven what it can do many times before. Up and down. I said it would never hit the 200s again. I was very wrong.
The halving hasn't been priced in. Because when that day comes, miners now need to charge double to make their investment back, and they HAVE to make their investment back. If I have learned anything about Bitcoin over the years, it's that miners have incredibly short-term views. If they were comfortable with a $250 price floor before the halving... well, you do the math.
News has NEVER been a cause of price changes in bitcoin. Go back and read threads from 2013. "What news is causing this?" is a common refrain throughout bitcoin's history.
The 2 most likely factors in my opinion are:
1. China's capital controls. Because Chinese citizens now have limits on taking money out of the country through official means, they have to move money through bitcoin now unofficially. This is why you are seeing more activity on Chinese exchanges.
2. Gemini is allowing more corporate regulated money into bitcoin. Because of this, many of them are seeing bitcoin for the first time and they will like these insane short-term profits.
We are most likely going to hit $400 TODAY, November 3.