I have a 1 year domain that is about to expire in 13 days. I am currently ranking 750 for a competitve 2 word term, the holy grail of my sector.
I just renewed the domain for another year.
I will see what happens to my position.
But at the same time, I did just submit an article so there will be an influx of links that may push me up as well, but more should be revealed on this.