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Here are five things you must know for Monday, Nov. 21:

1. -- U.S. stock futures rose and global shares traded higher Monday as oil prices rallied and Wall Street awaited a speech from a key Federal Reserve official.

The economic calendar in the U.S. on Monday is bare but Fed Vice Chairman Stanley Fischer is scheduled at 8 a.m. EST to discuss monetary policy, inflation rates and the U.S. economic outlook at the Council on Foreign Relations in New York.

An interest rate hike from the Fed in December looks likely, according to Wall Street pundits, with any doubt after Donald Trump's recent election as U.S. president quickly evaporating. The chances of a rate hike next month currently sit at 90%, according to CME Group fed funds futures.

Earnings are expected Monday from Tyson Foods (TSN) , Jack in the Box (JACK) and Sina Corp. (SINA) .

2. -- Oil prices rose sharply Monday after Iraqi and Iranian officials offered hope that OPEC would deliver a promised production cut at a meeting next week in Vienna.

Crude oil in the U.S. rose more than 2% to $47.31 a barrel. Brent crude, which is used to price international oils, rose 1.966% to $47.78 a barrel in London.

Iran's oil minister Bijan Zangeneh said it was "highly probable" that OPEC members will reach agreement on the production cuts, according to quotes published over the weekend by Iran's state-backed oil news service Shana. On Monday, Iraq's Oil Ministry said its nation's "demands should not be perceived as an obstacle to reaching a new agreement."

OPEC members have been holding informal meetings ahead of their decisive get-together on Nov. 30, when they are due to agree the terms of a production cut agreed in principle in Algiers on Sept. 28. The 14-nation oil cartel has promised to reduce output to between 32.5 million and 33 million barrels of oil a day, a target that will require the removal of about 1.5 million barrels a day, or about 5% of current production.

3. -- Security software company Symantec  (SYMC) took another step to transform into a cybersecurity player by agreeing to buy LifeLock (LOCK)  for $2.3 billion. 

Symantec said Sunday it reached an agreement to buy LifeLock for $24 a share, a 16% premium to Lifelock's closing share price of $20.75 on Friday. Lifelock shares jumped 14.2% to $23.70 in premarket trading. 

"With the combination of Norton and LifeLock, we will be able to deliver comprehensive cyber defense for consumers," said Symantec CEO Greg Clark. "This acquisition marks the transformation of the consumer security industry from malware protection to the broader category of Digital Safety for consumers."

The acquisition of an identity theft protection company would mark a further expansion for Symantec -- whose signature offering is antivirus software Norton -- into the cybersecurity business, following its acquisition of Blue Coat Systems in June. It would also expand its reach into consumer clients.

4. --  Walmart ( WMT) said Monday that it's kicking off its so-called Cyber Monday deals at 12:01 a.m. EST Friday for the first time ever as it aims to grab customers ahead of its competitors.

Last year, the world's largest retailer pulled up the Cyber Monday deals to the Sunday evening after Thanksgiving for the first time.

Cyber Monday, which falls on the Monday after Thanksgiving, is typically the busiest day of the year for online shopping.

5. -- Facebook (FB) is expected Monday to unveil plans for a major expansion of its operations in London, according to The Telegraph.

Nicola Mendelsohn, Facebook's head of Europe, the Middle East and Africa, will tell the Confederation of British Industry's annual conference that the social media giant plans to hire 500 more staff in the U.K., increasing its headcount by 50% to more than 1,500.

Facebook is preparing to move into spacious new offices in central London's Fitzrovia district next year, one of several big moves planned by Silicon's Valley's best known names to bolster their presence in the U.K., the Telegraph noted. Last week, Google revealed that it will open a new London head office that will result in 3,000 new British jobs by 2020.

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