(CNBC) — U.S. stocks closed lower Wednesday, weighed by declines in energy stocks, as investors remained on edge ahead of the U.K. vote on whether to leave the European Union.
Shares of McDonald's traded more than 1.5 percent lower as the greatest contributor to declines in the Dow Jones industrial average. Nomura downgraded the stock to "neutral" from "buy" on expectations of weaker sales. The blue-chips index traded near the flatline in midday trade.
U.S. crude oil futures settled down 72 cents, or 1.44 percent, at $49.13 a barrel, off session lows. Energy traded more than half a percent lower.
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