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Here are five things you must know for Thursday, June 27:

1. -- Stock Futures Turn Mixed on Report China to Push for Trade Concession

U.S. stock futures turned mixed Thursday amid reports that China will seek a host of demands from Donald Trump in order to renew stalled trade talks between the world's two biggest economies.

The Wall Street Journal reported that Chinese President Xi Jinping will present terms for settling the years-long trade dispute, but noted that he will demand an end to the U.S. blacklisting of Huawei Technologies, drop efforts to get China to buy more American exports, and lift punitive tariffs on U.S.-bound exports.

Futures were solidly higher earlier after a report suggested a potential truce in U.S.-China talks that could lead to the avoidance of new tariffs and a commitment to more detailed trade discussions following this weekend's G-20 summit in Osaka, Japan.

Contracts tied to the Dow Jones Industrial Average were down 88 points, futures for the S&P 500 gained 2.75 points, and Nasdaq futures rose 11.50 points.

The economic calendar in the U.S. for Thursday includes the third estimate of first-quarter GDP at 8:30 a.m. ET. Economists surveyed by FactSet expect GDP to have risen 3.1%, unchanged from the second estimate.

The calendar also includes weekly jobless claims at 8:30 a.m., and Pending Home Sales for May at 10 a.m. 

2. -- Nike, Walgreens Report Earnings

Earnings reports are expected Thursday from Nike (NKE - Get Report) , Walgreens Boots Alliance (WBA - Get Report) , ConAgra Brands (CAG - Get Report) , Accenture (ACN - Get Report) , McCormick & Co. (MKC - Get Report) and Progress Software (PRGS - Get Report) .

3. -- FAA Finds Another Issue With Boeing's Software for 737 MAX

Boeing  (BA - Get Report)  declined sharply in premarket trading Thursday after the Federal Aviation Administration said it found yet another issue with the planemaker's 737 MAX software that could further delays to its return to service.

The FAA said it found a "potential risk" in Boeing's MCAS software, reportedly during simulator tests last week, that will require additional fixes from Boeing and delay its official testing date until at least July 8, according to report from Reuters. The FAA also said the testing and procedures were following a process, not a prescribed timeline, for the 737 MAX's recertification.

United Continental  (UAL - Get Report) , the parent of U.S. carrier United Airlines, said it will pull all MAX aircraft from its summer schedule, resulting in around 3,200 cancellations during July and August, and doesn't expect Boeing's flagship plane to return until at least Sept. 3, echoing a similar assessment earlier this month from Southwest Airlines (LUV - Get Report) .

"The safety of our airplanes is Boeing's highest priority. During the FAA's review of the 737 MAX software update and recent simulator sessions, the FAA identified an additional requirement that it has asked the company to address through the software changes that the company has been developing for the past eight months," Boeing said in a statement. "The FAA review and process for returning the 737 MAX to passenger service are designed to result in a thorough and comprehensive assessment. Boeing agrees with the FAA's decision and request, and is working on the required software."

Boeing fell 6.25% in premarket trading to $351.50.

4. -- Carl Icahn Seeks to Replace Four Directors at Occidental Petroleum

Carl Icahn has called for a special meeting of Occidental Petroleum (OXY - Get Report) shareholders, saying in a regulatory filing that he wants to replace four directors at the  company because its pending purchase of rival Anadarko Petroleum (APC) was mismanaged and is too expensive.

Icahn holds a stake of nearly 5% in Occidental. The $38 billion deal for Anadarko is "hugely overpriced," the billionaire investor said, and required the use of expensive financing, putting the company at risk if oil prices fall.

Occidental, responding to the filing, said in a statement that it remains "focused on completing our transaction with Anadarko in the second half of 2019, which we believe will create significant value and enhanced returns for shareholders.

"We will review the latest materials filed by Mr. Icahn and look forward to addressing them in our ongoing conversations with Occidental shareholders," the company added.

5. -- Facebook's Zuckerberg Says He Welcomes Regulation

Facebook (FB - Get Report)  CEO Mark Zuckerberg doesn't think the social media giant is too big.

In an interview at the Aspen Ideas Festival, Zuckerberg told an audience that he welcomes regulation on several fronts but that breaking up Facebook isn't the answer to many of the complaints surrounding the company's influence on society. 

In a wide-ranging conversation that included election interference, privacy, content moderation and other issues, Zuckerberg said that he would embrace government oversight to address some of them.

He cited data privacy as one area where stronger regulation is needed, and election integrity as another. He called out the Honest Ads Act, a proposed law that would extend rules on disclosures in political advertising to the internet, as "a good floor" for improving elections and potentially mitigating foreign interference. He also said that privacy-related oversight at the federal level is needed to establish "a consistent experience" across all the internet services people use, not just Facebook.

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