Here are five things you must know for Wednesday, Dec. 27:

1. -- U.S. stock futures traded slightly higher on Wednesday, Dec. 27, and European shares were mixed amid a rally in global commodities.
 
Copper and oil prices tested multi-year highs following stronger-than-expected import data this week from China that suggested a robust start to 2018 growth. Copper rallied to three-year highs.
 
Crude oil traded in the U.S. fell 0.8% early Wednesday to $59.49 a barrel but had jumped 2.6% on Tuesday following news of a pipeline explosion in Libya. 
 
Stocks ended the session on Tuesday, Dec. 26, to the downside after Apple Inc. ( AAPL)  tumbled 2.5% following a report from Taiwan's Economic Daily suggesting that demand for the iPhone X  could be softer than expected in the first quarter. 
 
Apple shares were rebounding slightly in premarket trading, up 0.1% to $170.74, from one of their worst trading days of the year.
The Nasdaq fell 0.34% to 6,936 on Tuesday, the Dow Jones Industrial Average slipped 0.03% to 24,746 and the S&P 500 declined 0.11% to 2,680.
 
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2. -- The economic calendar in the U.S. on Wednesday includes Consumer Confidence for December at 10 a.m. ET, and the Pending Home Sales Index for November at 10 a.m.
 
3. -- Royal Dutch Shell PLC ( RDS.A)  said Wednesday that it expects the new U.S. tax law will have a "favorable" impact on its operations, but said it will incur a charge of $2 billion to $2.5 billion in the fourth quarter from a re-measurement of its deferred tax position to reflect the lower corporate income tax rate of 21%.
 
Shell shares were down 0.02% in premarket trading.
 
Chubb Ltd. ( CB) said it expects a one-time benefit of more than $250 million in the fourth quarter from the new U.S. tax law.
 
Chubb rose 1.5% in after-hours trading on Tuesday.


4. -- Tesla Inc. ( TSLA) CEO Elon Musk said in a tweet on Tuesday that the electric carmaker would build a pickup truck after it has produced the Model Y crossover vehicle.
 
In his tweet, Musk said he has had the "core design/engineering elements in my mind for almost 5 years" for the pickup truck and that he was "dying to build it.
 
Asked if the pickup would be a Ford Motor Co. ( F) "F-150 class or larger," Musk raid: "Similar total size. Maybe slightly bigger to account for a really gamechanging (I think) feature I'd like to add."
 
The stock fell 0.5% in premarket trading after analysts at KeyBanc lowered their estimates for Model 3 deliveries in the fourth quarter.
 
5. -- Boeing Co. ( BA) announced it received an order for four 787-9 Dreamliners -- valued at $1.1 billion at list prices -- from Moroccan carrier Royal Air Maroc.
 
Boeing rose 0.3%. It has gained almost 90% in 2017, the most of any stock in the Dow Jones Industrial Average.

Apple is a holding in Jim Cramer's Action Alerts PLUS Charitable Trust Portfolio. Want to be alerted before Cramer buys or sells the stock? Learn more now.

This story has been updated from 5:50 a.m. ET.

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