See the companies making headlines before the bell. UnitedHealth — Shares jumped about 7% after the healthcare giant reported better-than-expected revenue in its first-quarter results Tuesday, growing nearly 9% from $91.9 billion. from the same period last year. UnitedHealth reported adjusted earnings of $6.91 per share on revenue of $99.8 billion for the quarter, while analysts surveyed by LSEG expected earnings of $6.61 per share on a turnover of 99.3 billion dollars. Morgan Stanley — Shares rose 3.2% after Morgan Stanley beat first-quarter expectations in wealth management, trading and advisory results. The company reported earnings of $2.02 per share, while analysts surveyed by LSEG had forecast earnings of $1.66 per share. Revenue was $15.14 billion for the period, beating analysts’ expectations of $14.41 billion. Live Nation Entertainment — Shares plunged 9.6% after The Wall Street Journal reported that the Justice Department was preparing to file an antitrust lawsuit against parent company Ticketmaster in the coming weeks. Johnson & Johnson — The stock fell slightly even after the pharmaceutical giant beat quarterly profit expectations and benefited from a surge in medical device sales. Revenue came in at $21.38 billion, roughly the $21.4 billion expected by analysts surveyed by LSEG. Bank of America – The U.S. banking giant reported first-quarter adjusted earnings of 83 cents per share, beating analysts’ estimates of 76 cents per share, according to LSEG. Revenue of $25.98 billion was in line with expectations of $25.46 billion. Shares were little changed in premarket trading. International Paper — Shares gained nearly 2% after the company, which makes packaging and other fiber-based products, agreed to buy British packaging company DS Smith in a deal in shares of 7.2 billion dollars. Tesla — Shares fell 2.7%, continuing the electric vehicle maker’s slide after an internal memo said Monday that Tesla plans to lay off more than 10% of its global workforce. “As we prepare the company for our next phase of growth, it is extremely important to examine all aspects of the business to reduce costs and increase productivity,” CEO Elon Musk wrote in the memo. Two top Tesla executives also announced Monday that they were leaving the company. — CNBC’s Samantha Subin, Tanaya Macheel and Michelle Fox Theobald contributed reporting.