I'm interested in learning how to adjust my own futures contracts for analysis. Unfortunately my quantitative classes didn't really go into this, and I would like to learn it on my own. The methods seem fairly straight forward, but I noticed something in the data that seemed concerning. Take the CZ2014 December Corn Futures data:
The data look like:
My first question - why am I seeing 2012-2013 data in a December 2014 historical price listing? Shouldn't this just be data for the month of December?
Next question is, why is there a sudden whip-saw early in the data but it seems to stabilize after that?
I'm sure these questions are trivial but I'm pretty confused at the moment. Thanks for the help!