UnitedHealth Group shares were sharply lower in premarket trading Wednesday following a downgrade from analysts at HSBC following the departure of the company’s CEO earlier this month. The stock fell 6.

A rough earnings report raised troubling questions about UHG’s future, and so did the resignation of CEO Andrew Witty.

Shares of UnitedHealth Group ( UNH -14.89%) are falling on Thursday. The company's stock has plummeted 15% as of 11:33 a.m. ET but lost as much as 19.2% earlier in the day. The collapse comes as the S&P 500 gained 0.1% and the Nasdaq Composite fell 0.4%.

The company's stock has taken a beating after the Wall Street Journal recently reported that the U.S. Department of Justice had begun a criminal investigation into the company for potential Medicare fraud, which followed CEO Andrew Witty's abrupt departure and the withdrawal of its 2025 forecast last week.

UnitedHealth Group Inc (NYSE:UNH) shares are trading higher Monday. The stock appears to be seeing a bit of a relief bounce following a sharp selloff last week. Here's a look at what's going on.

The stock has collapsed because nobody seems to know just how bad utilization rates have become. When UnitedHealth Group reported first-quarter results on April 17, management adjusted its 2025 earnings outlook from a range between $28.15 and $28.65 per share down to a range between $24.65 and $25.25 per share.

UnitedHealth stock was climbing on Friday. It's one of the Dow's 30 constituents, so the rebound is good news for the blue-chip index. It's been a nightmare week for the health insurer. Shares tanked Tuesday after it suspended its guidance and said its CEO would depart,

The Wall Street Journal on Wednesday cited people familiar with the matter as saying that the probe has been ongoing since last year.

UnitedHealth (UNH) stock continue to gain attention as new CEO Stephen Hemsley adds $25M shares of the company while its stock dropped over 20% this week. Read more here.

Shares of UnitedHealth Group tumbled 16% in intraday trading Thursday, leading S&P 500 decliners, on a report that the U.S. Department of Justice is investigating the embattled health insurance provider for possible criminal Medicare fraud.

TD Cowen, Raymond James and Bank of America have all downgraded UnitedHealth’s stock, citing dogged internal challenges facing the company.