The bitcoin price has been below $440 for some time. If the price break the $440 level, it will go much higher.
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).
$440 is the recent resistance level. So it is broken, then psychologically, the price could go higher.