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UnitedHealth Group maintains its status as the largest health insurance provider in the U.S., and 2021 was a year of significant growth. The company served 2.2 million more people than in the previous year and saw a 12% rise in revenue year over year, to $287 billion. Pharmacy benefits management company Optum, one of UnitedHealth’s subsidiaries, delivered a 33% increase in revenue per consumer. Adding a 16th company to its vast portfolio of acquisitions, UnitedHealth bought Golden Valley–based health insurer PreferredOne to compete for business in its home state of Minnesota.
Tiffany Hagler-Geard—Bloomberg/Getty Images
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