Stocks are poised for a sharply lower open as clashes break out across eastern Ukraine and data showing a fourth straight month of contraction in China's manufacturing sector; S&P and Dow -0.5%, Nasdaq -0.7%.
European bourses are broadly lower, while Asian markets ended mixed; Hang Seng -1.3%.
Sentiment in the financial sector is hurt by disappointing guidance issued by JPMorgan late Friday; JPM -3.5% premarket after saying it expects Q2 markets revenue to shrink 20% Y/Y.
Pfizer -1.5% after reporting Q1 earnings that topped estimates but revenue that declined more than expected.
Safe haven investment look strong: Treasury bonds are higher, with the yield on the benchmark 10-year note at one point touching 2.566%, the lowest level since Nov. 1, while gold also is higher.
Still ahead: PMI services, ISM non-manufacturing.