Check out the companies making headlines in midday trading.
Boeing — Shares fell about 4% after a Boeing 737 passenger jet crashed in China with 132 people on board. China's civil aviation agency lost contact with the flight over Wuzhou, and the number of deaths is currently unknown.
Air Products and Chemicals — The specialty chemical stock gained nearly 1% after JPMorgan upgraded Air Products and Chemicals to overweight from neutral. JPMorgan said the stock's rough start to a year had created a discount relative to a rival chemical stock with several possible catalysts coming up.
Berkshire Hathaway — Berkshire Hathaway (BRK.A) shares rose about 2% on news that it would buy insurance company Alleghany for $11.6 billion in cash, or $848.02 per share. Shares of Alleghany, which will operate as an independent subsidiary of the Omaha, Nebraska-based conglomerate, soared 24% following the news.
General Motors — Shares of General Motors fell 2.7% as Morgan Stanley lowered its price target to $50 per share and reiterated the auto company as equal weight. Analysts said they were concerned about inflation and ongoing supply chain disruptions which could affect demand.
Silvergate Capital — Shares of the crypto-focused bank rose 1.9% after Bank of America rated the stock as a buy and said it offers investors an "alternative way to gain exposure to the growth of the digital asset ecosystem."
Anaplan — The business software company's shares soared by more than 27% following a deal with private equity firm Thoma Bravo, which will buy Anaplan for $10.7 billion, or $66 per share, in cash. Thoma Bravo said it plans to use Anaplan as a platform for further acquisitions, according to the Wall Street Journal.
Tesla — Tesla shares rallied 1.7% after Jefferies reiterated the electric-vehicle company as a buy but lowered its price target to $1,250 from $1,400 amid a "riskier macro and geopolitical environment."
Occidental Petroleum, Marathon Oil — Oil prices edged higher on Monday as talks between Russia and Ukraine showed no signs of progress. Shares of Occidental and Marathon each rose about 8%, respectively.
— CNBC's Hannah Miao, Jesse Pound and Tanaya Macheel contributed reporting