Stock futures edged higher on Tuesday as Apple (AAPL - Get Report) climbed in premarket trading after assurances its Apple Watch was performing well in sales ahead of Christmas. 

S&P 500 futures were up 0.15%, Dow Jones Industrial Average futures rose 0.07% and Nasdaq futures added 0.2%.

Apple rose 1% before the bell after CEO Tim Cook told Reuters that sales of the Apple Watch were rising and that the smartwatch would likely hold rank as one of the holiday season's most popular gifts. Cook did not disclose sales data.

"Sales growth is off the charts," said Cook. "In fact, during the first week of holiday shopping, our sell-through of Apple Watch was greater than any week in the product's history. And as we expected, we're on track for the best quarter ever for Apple Watch."

Cook's assurances come after a report from IDC on Monday that found Apple Watch shipments in the third quarter had dropped 71% from a year earlier. 

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The U.S. trade deficit jumped 17.8% in October to $42.6 billion, a four-month high, from a revised $36.2 billion in September, the Commerce Department said. Exports fell 1.8% in October, while imports increased 1.3%, hitting a 14-month high. 

U.S. productivity in the third quarter was unchanged at 3.1%, the Labor Department said. Economists surveyed by FactSet had expected a revised figure of up 3.2%. Output of goods and services was revised to show 3.6% growth from 3.4% growth. Unit labor costs rose 0.7%, more than double an initial estimate. 

The Dow has crept to new records in the past few weeks as investors bet that President-elect Donald Trump's Cabinet picks would herald Wall Street-friendly moves. Picks included Steve Mnuchin for Treasury secretary, a former executive of Goldman Sachs, who called for a roll-back of portions of the Dodd-Frank financial rules. Energy stocks Exxon Mobil ( XOM - Get Report) and Chevron ( CVX - Get Report) also drove the Dow to records after the Organization of Petroleum Exporting Countries reached a production freeze deal. 

Crude oil fell on Tuesday for the first time since OPEC reached its agreement last Wednesday. Oil had rallied since Wednesday in relief after some of the world's largest oil producers accepted terms to limit output. Hopes for a deal had gone back and forth in recent weeks as individual OPEC members raised doubt over their cooperation.

West Texas Intermediate crude was down 2.2% to $50.63 a barrel on Tuesday morning. 

Markets continued to shrug off potential negative effects of Italy's "no" vote on its constitutional reform referendum. Italian Prime Minister Matteo Renzi said Monday he would resign following the public's vote not to amend Italy's 1948 constitution, a clear signal that voters didn't want to implement Renzi's proposed changes to stimulate the Italian economy. European markets moved slightly higher on Tuesday morning. 

Nike (NKE - Get Report) fell more than 1% after being downgraded to market perform from underperform at Cowen & Co.. The ratings revision was tied to worries it could lose market share to Adidas and Under Armour. Cowen's Consumer Tracker survey found preference for Nike had dropped to 44% from 55%.  

Roper Technologies (ROP - Get Report) agreed to acquire business software developer Deltek in an all-cash deal worth $2.8 billion. The deal, expected to close before year's end, is anticipated to boost cash flow and increase revenue by $535 million in 2017. 

Synchronoss Tech (SNCR - Get Report) agreed to acquire Intralinks Holdings (IL) on Tuesday morning in a deal worth around $821 million. Synchronoss will pay $13 for each share of the cloud-computing company. The deal is expected to close in the first quarter of next year. Intralinks CEO Ron Hovsepian will take over as chief executive to the combined company, while Synchonoss CEO Stephen Waldis will act as executive chairman. Intralinks shares rose 15.4% in premarket trading.

Equinix (EQIX - Get Report) agreed on Tuesday to purchase a portfolio of 24 data center sites, consisting of 29 buildings, from Verizon (VZ - Get Report) . The all-cash deal is worth a total $3.6 billion. The deal is expected to close by the middle of next year.  

Toll Bothers  (TOL - Get Report) posted adjusted earnings of $1.15 a share in its fiscal fourth quarter, topping analysts' estimates as revenue rose 29.1% to $1.86 billion. The homebuilder said orders in the fourth quarter rose 20.3%. The stock was up 2.4% in premarket trading.

Autozone (AZO) rose 1.1% in premarket trading after posting fiscal first-quarter earnings that topped analysts' expectations. Revenue of $2.47 billion in the quarter missed forecasts.