Is it though? It's been in a downtrend for a couple of months. Plus this assumes that everyone's tax year runs the same as the US, which is not the case.
Is the US tax year contributing to the bear market? Sure, maybe. Is it causing it? I'm not convinced.
Oh I'm not convinced either. I think people try to figure out what news is causing whatever crash or upswing and sometime's there just isn't a reason. The price went up. The price went down. Simple correction.
Still you have to admit that being forced to pay taxes on money that doesn't exist simply because of the way the dates fell is... archaic. Advancing technology points out how inefficient systems of government are and how unable they are to change.