As Demand for Mental-Health Care Booms, Investors See Opportunities

Psychiatrists and psychologists once ran their own practices. Now the local therapist office could be controlled by a buyout king.

Venture capitalists and private-equity firms are pouring billions of dollars into mental-health businesses, including psychology offices, psychiatric facilities, telehealth platforms for online therapy, new drugs, meditation apps and other digital tools. Nine mental-health startups have reached private valuations exceeding $1 billion last year, including Cerebral Inc. and BetterUp Inc.