Stocks fell again on Thursday.
The S&P 500 fell 0.2 percent, declining for the fourth consecutive day and turning negative for the year.
The STOXX Europe 600 fell 0.9 percent and the Nikkei 225 fell 1.4 percent.
Stocks declined as oil prices jumped after news of military strikes in Yemen by five Gulf states and Egypt triggered worries about crude supply.
Stocks are also declining on weakening earnings expectations. Analysts predict that profits for the S&P 500 companies will be down 4.6 percent this quarter from the first quarter of 2014. This would be the first time profits have declined since the third quarter of 2012.