Stock of kidney disease treatment firm DaVita falls on Ransomware attack Disclosure

Shares of DaVita (DVA) led S&P 500 decliners Monday morning after the kidney disease treatment company revealed it had suffered a ransomware attack.

In a statement filed with the Securities and Exchange Commission (SEC), DaVita reported that on Saturday, it “became informed of a Ransomware incident which has encrypted certain elements in our network.”

The Denver-based dialysis services firm added that "the incident is impacting some of our operations, and while we have implemented interim measures to allow for the restoration of certain functions, we cannot estimate the duration or extent of the disruption at this time."

DaVita said it has "activated our response protocols and implemented containment measures, including proactively isolating impacted systems. We are actively working to assess and remediate the incident with the assistance of third-party cybersecurity professionals and have notified law enforcement of the matter."

DaVita’s shares have fallen 4% over the last few days. They are not much different in 2025, but they have increased by 15% over the last 12 months.