I was just looking at the chart for historical halvings, and noticed that the last having literally happened right before our meteoric rise to $1100. That's when the block reward went from 50 to 25. Is that coincidental?
Well, if you consider a two month delay as "right before", I suppose the halving did occur "right before" the rise in February to $260.
Either way, the rise to $1100 didn't start until October, nearly a year later. The price was down or flat for the 6 months before that bubble started.
You might consider Nathaniel Poppers explanation that the presentations to Silicon Valley venture capitalists by Wences Cesares convinced a few to buy a bunch in February, triggering the bubble that popped in April.