Why $440? (Apart from it being the subject of this thread and the price on February 20).

There does seem to have been some support and resistance around $440 in late February, but looking at the past 5-6 months I'm much more inclined towards support and resistance drawing closer - lower highs and higher lows. If price got above ~$425 I'd expect it to go much higher (and, conversely, if it went below ~$415 I'd expect it to much lower).