UnitedHealth lost $330B of value in four months and admitted its problems ran deep

Fortune's July 31, 2025 analysis said UnitedHealth Group, No. 3 on the Fortune 500, had shocked investors again with unexpectedly bad results for the second quarter in a row. The first came in April, when profit fell far below Wall Street's expectations and over $100 billion of market value vanished within hours. A month later CEO Andrew Witty abruptly resigned for unspecified personal reasons and former CEO Stephen Hemsley returned, and the Wall Street Journal reported a Justice Department criminal Medicare fraud investigation. In under a month the company lost more than half its value.

On July 24 UnitedHealth acknowledged that the Justice Department was conducting criminal and civil investigations of its Medicare billing practices. Five days later its second-quarter results again disappointed. Hemsley told investors the company needed an exhaustive rehab and would change 'leadership, our businesses, our culture, approaches and practices, our board, governance, and succession oversight.' Optum's CEO said its performance 'has not met expectations,' and the insurance chief said the company was approaching its business 'with greater humility.'

Hemsley set low expectations: no profit increase in 2025, 'solid but moderate' growth in 2026 and stronger growth only from 2027. When he returned in June the board gave him a one-time $60 million stock-option award that vests after three years.

Fortune said UnitedHealth was confessing fundamental, long-standing problems endemic throughout the organization that may take years to remedy.

The company's own leaders said Optum and the insurance business had missed expectations, and the CEO listed leadership, culture, practices, board and governance for change.

The Justice Department investigation into Medicare billing added a regulatory overhang on top of the earnings misses. Fortune's piece does not detail which practices the investigation covers.

When a bellwether admits that its problems are long-standing and company-wide, investors reprice everything at once. Hiding them behind one more quarter makes the reset larger.

As of the July 2025 report, Hemsley was running the company with a three-year option award, and Fortune questioned whether three years would be enough for such a transformation of an organization of about 400,000 employees. Executives asked shareholders for patience.