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Apple worries grow, UnitedHealth and insurers tumbling, Callidus snagged by SAP

Let’s check out the Yahoo Finance charts of the day.

Apple (AAPL): Shares are lower ahead of its earnings report Thursday. The Wall Street Journal reports the company is slashing iPhone X production in half for the first quarter, as demand wanes.

UnitedHealth (UNH): Shares are getting hammered in early trading. The news here is UnitedHealth and other managed care stocks are getting slammed on word that Berkshire Hathaway, JPMorgan, and Amazon will partner to provide health care for their employees. This new outfit will be “free from profit-making incentives.”

Callidus Software (CALD): Shares of the cloud software provider are ripping higher in midday trading. The German enterprise software giant SAP will buy Callidus for $2.4 billion. It’s SAP’s largest acquisition in 3 years.

For more on today’s big stock movers check out the Final Round, live at 3:55 p.m. ET, right here on Yahoo Finance.