Despite decent US economic data, the 10yr treasury yield is flat to down. Not the scenario an investor would except. But every week Russian escalates there self-made situation in the east of Ukraine. The geo-political uncertainty increases with the increased rhetoric between the Russia and the US (the two countries with the largest nuclear weapon stock piles).
As a side note: S&P revised estimates suggest earnings for the 1st quarter are not coming in as expected. This maybe playing a role too, but earnings are still pretty healthy. (SP500 targets are based on the est reported earnings.)