The Dow Jones Industrials saw its five-session win streak in danger, dropping 173.96 points at 34,580.97
The S&P 500 dipped 10.76 points to 4,452.36,
The NASDAQ Composite slipped 133.28 points to 13,760.56.
Boeing dropped about 5% after a China Eastern Airlines Boeing 737 passenger plane crashed, weighing on the Dow.
On the upside, energy stocks rallied Monday as oil prices rose. Occidental Petroleum picked up 5%, and Marathon Oil gained 4%, to become the top gainers in the sector.
Nike and Tencent Music report quarterly results after the market closes Monday.
Market participants are also monitoring the war between Russia and Ukraine. Ukraine’s President Volodymyr Zelenskyy warned if peace talks with Russian leader Vladimir Putin fail, it would mean the start of a “third world war.”
Ukrainian and Russian officials have met intermittently for peace talks, which have failed to progress to key concessions. Ukraine has also rejected an ultimatum to surrender the city of Mariupol to Russian troops.
Treasury prices plummeted, raising yields to 2.24% from Friday’s 2.15%. Treasury prices and yields move in opposite directions.
Oil prices gained $5.99 to $110.69 U.S. a barrel.
Gold prices improved $5.60 to $1,934.90 U.S. an ounce.