1. Fed speakers
With no major U.S. economic data on the calendar, focus turns to speeches from Federal Reserve officials.
Fed Governor Stanley Fischer and Atlanta Fed President Dennis Lockhart are scheduled to speak later in the day. Their comments will be closely watched for further hints regarding the strength of the economy and the timing of a Fed rate hike.
Lockhart said last week that the U.S. central bank was "close" to being ready to raise short-term rates, while adding that it would take "significant deterioration" in the U.S. economy for him to not support a rate hike in September.
Lockhart, a voter this year, is deemed somewhat as a moderate, analysts said, which made his remarks more meaningful.
2. Wall Street earning season begins to wind down
Dean Foods Company (NYSE:DF), Hertz Global Holdings Inc (NYSE:HTZ), and Sysco (NYSE:SYY) are due to report quarterly earnings ahead of Monday's opening bell.
After Monday's close of trading, Kraft Heinz (NASDAQ:KHC), Shake Shack (NYSE:SHAK), Take-Two Interactive Software (NASDAQ:TTWO) and Rackspace (NYSE:RAX) are scheduled to report.
3. Crude oil futures head towards six-year lows
Crude oil for delivery in September on the New York Mercantile Exchange dropped to an intraday low of $43.39 a barrel, a level not seen since March 2009, after data showed that rigs drilling for oil in the U.S. rose last week, underlining concerns over robust domestic production.
Elsewhere, on the ICE Futures Exchange in London, Brent oil for October delivery hit a daily low of $48.24, the weakest level since March 2009, as ongoing concerns over a glut in world markets continued to drive down prices.
4. China stocks surge 5% on hopes for more stimulus
The Shanghai Composite scored its biggest one-day gain in a month as a batch of disappointing Chinese economic data fueled speculation policymakers in Beijing will have to introduce further stimulus measures to boost growth.
Government data released on Sunday showed that Chinese producer prices fell by a more-than-expected 5.4% in July, the 40th straight monthly decline and the worst reading since October 2009.
On Saturday, data showed that Chinese exports slumped 8.3% from a year earlier, far worse than forecasts for a decline of 1.0% and the biggest fall in four months. Imports dropped 8.1%, broadly in line with expectations for a drop of 8.0%.
5. Greece, creditors agree on draft of third bailout deal
Negotiations between Greece and its international creditors over a new bailout deal worth €86 billion should conclude by early Tuesday after the country's creditors reportedly agreed on a draft deal this weekend.
Athens hopes to get the first disbursement of aid by August 20, when it faces its next debt payment to the European Central Bank.