US stocks are seen opening lower as traders await the non-farm job creation numbers at the end of the week and the oil price is on the slide.
The jobs data will be closely scrutinised as it could signal the timing of the next Fed rate hike.
The general mood is that Fed chair Janet Yellen will raise interest rates on September 21 at a time when the majority of the rest of the Central Banks are pursuing stimulus measures amid stagnant growth.
And the ADP private payroll data is already out. This is largely seen as a precursor to Friday's report.
Companies added 177,000 positions in the month, which was just above Wall Street expectations for 175,000.
On Wall Street, the Dow closed down 48 at 18, 454.
The S&P500 closed down 4.26% to 2,176, while the tech heavy Nasdaq lost 9.3 points at 5,222. The S&P Midcap 400 shed 0.1% to 1,568. The S&P Smallcap 600 posted a flat end at 755.
In futures trading today, the S&0500 is down three points; the Nasdaq is down 6.5 and the Dow Jones Industrial Index is 29 points lower.
Apple (NASDAQ:AAPL) shares nudged 0.6% lower in pre-market after yesterday's ruling by the European Commission, ordering the Irish gov't to get US$14.5 billion plus interest in taxes from Apple. Ireland and the tech giant have said they will appeal.
US crude is 0.91% lower, at US$45.91 a barrel.