Federal Reserve Vice Chairman Stanley Fischer is scheduled to speak at Hoover's Monetary Policy Conference in Stanford, Calif., at 11:30 a.m., while Fed Chair Janet Yellen will speak about "125 Years of Women's Participation in the Economy" at Brown University in Providence, R.I., at 1:30 p.m.
Cigna (CI - Get Report) posted adjusted earnings in the first quarter of $2.77 a share, beating analysts' forecasts of $2.45. Earnings are also expected from Revlon (REV - Get Report) , Cognizant Technology (CTSH - Get Report) and Moody's (MCO - Get Report) .
2. -- Global oil prices stabilized Friday after an overnight plunge that extended one of the biggest declines for crude in at least six months.
3. -- Shares of IBM (IBM - Get Report) fell 2.5% in premarket trading Friday after Berkshire Hathaway (BRK.A - Get Report) Chairman and CEO Warren Buffett told CNBC he sold off about a third of his stake in Big Blue in the first and second quarters of 2017.
Buffett owned about 81 million shares of IBM at the end of 2016.
"I don't value IBM the same way that I did six years ago when I started buying ... I've revalued it somewhat downward," Buffett told CNBC. "When it got above $180 we actually sold a reasonable amount of stock."
IBM closed Thursday at $159.05.
4. -- Goldman Sachs (GS - Get Report) CEO Lloyd Blankfein warned Friday that London's status as an international finance hub is at risk as a result of the country's decision to leave the European Union.
In an interview broadcast on the BBC, Blankfein said he was confident that London would remain the principal base for his bank's non-U.S. operations, but nonetheless warned that there were things "beyond our control" that could alter those plans. He also warned that London's financial sector expansion, a key component of U.K. economic growth, could "stall" as a result of the ongoing Brexit uncertainty.
When asked if the bank, which has more than 6,500 employees working in various London offices, would consider relocating as a result, Blankfein sounded open-minded.
"A lot of people elect to have their European business concentrated in one place and the easiest place would be the U.K.," Blankfein said. "If you cannot benefit from access to the EU from the U.K., and no one knows what those rules and determinations will be, then the risk is that they'll be some adjustment that will cause some people to have a smaller footprint in the U.K."
"It is our hope that we will be able to conduct our business as close as we can to the way we conduct it today," he added. "But, without knowing how things will turn out, we have to plan for a number of contingencies.
5. -- The U.S. Department of Justice has begun a criminal investigation into Uber's use of a software tool that helped its drivers evade local transportation regulators, two sources familiar with the situation told Reuters.
Uber acknowledged the software, known as "Greyball," helped it identify and circumvent government officials who were trying to clamp down on Uber in areas where its service had not yet been approved, such as Portland, Ore., Reuters noted.
The company prohibited the use of Greyball for this purpose shortly after The New York Times revealed its existence in March, saying the program was created to check ride requests to prevent fraud and safeguard drivers. The Times report triggered a barrage of negative publicity for the company, which already was struggling with a number of business and legal issues.
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