Uncertainty over policies from a Donald Trump administration contributed to volatile trading on Monday. 

The S&P 500 was down 0.4%, the Dow Jones Industrial Average fell 0.3%, and the Nasdaq added 0.33%. Stocks opened lower but then turned mixed earlier in the session. The Volatility Index (VIX.X)  increased 6%. 

In a meeting with business leaders on Monday, Trump repeated his proposal for significant border taxes for companies manufacturing outside of the U.S. and said companies building domestic factories would receive speedy approvals. Trump met with a range of business leaders on Monday including executives from Lockheed Martin (LMT - Get Report) , Under Armour (UA - Get Report) and Tesla (TSLA - Get Report) . Trump also said he planned to cut business regulations by 75% or more. 

Stocks traded mostly lower in recent days as investors grappled with uncertainty over Trump's policies, particularly on protectionist trade moves. Trump underlined his belief in "America first" in his inauguration speech on Friday, which could lead to higher tariffs for foreign companies and U.S. companies manufacturing overseas.

The coming week should shed a little light on what markets can expect going forward. The president and Republican officials have suggested that the repeal of the Affordable Care Act is high on the agenda, while Wilbur Ross, Trump's nominee for commerce secretary, has indicated the reopening of the North American Free Trade Agreement is also a top priority.

"A focus on rules of origin and dispute-settlement panels rather than punitive tariffs would be viewed positively, while greater detail on infrastructure spending and corporate tax reform plans would reinforce market sentiment as well," TD Securities analysts wrote in a note.

Trump and his team spent little time over the weekend detailing any substantive policy proposals. Instead, Trump and his White House Press Secretary Sean Spicer attacked the media and defended the crowd size at Friday's inauguration. Trump is set to meet with House Speaker Paul Ryan and a number of business leaders on Monday. 

The U.S. dollar was under pressure on Monday amid uncertainty over Trump's policy plans. The U.S. Dollar Index, which measures the greenback against six other currencies, was down 0.04% to 100.59, recovering from lows of 100.20 earlier in the session.  

McDonald's (MCD - Get Report)  was one of the biggest losers on the Dow despite reporting a better-than-expected fourth quarter. The world's largest burger chain earned $1.44 a share in the quarter, higher than $1.31 a share in the year-ago quarter and 3 cents more than estimates. Same-store sales rose 2.7%, more than double estimates. Same-store sales in the U.S., however, fell 1.3% while international sales grew 2.8%. Shares fell 1%.  

Crude oil prices were sharply lower even after upbeat comments from Saudi Arabia, a key player in the Organization of Petroleum Exporting Countries. Saudi Arabia's energy minister, Khalid al-Falih, said the 20 nations participating in a production cut agreement had so far shown "very good compliance."

West Texas Intermediate crude turned south in the early hours of Monday. Crude was down 1.1% to $52.60 a barrel on Monday morning.

Halliburton (HAL - Get Report) fell nearly 3% after reporting a mixed quarter. Losses for the fourth quarter widened to 17 cents a share from 3 cents in the year-ago quarter. Adjusted earnings of 4 cents a share came in above consensus of 2 cents.. Revenue declined to $4.02 billion from $5.08 billion and fell short of estimates of $4.1 billion.

AMC Entertainment (AMC - Get Report) agreed on Monday to buy Nordic Cinema Group, a Stockholm-based cinema chain, in an all-cash deal worth $929 million. Nordic is the largest theater chain in Sweden, Estonia, Lithuania, Latvia and Finland. The acquisition is expected to close in June.

Qualcomm ( QCOM - Get Report) was downgraded to neutral from buy at Nomura. The company is facing increased legal scrutiny, which could affect the pending NXP Semiconductors ( NXPI - Get Report) deal, Nomura said.

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Kate Spade (KATE) climbed nearly 5% on reports of takeover interest. Accessories brands Coach (COH) and Michael Kors (KORS) are reportedly both mulling a bid.