On October 30, 2024, Everest released its third quarter 2024 results and disclosed that that loss activity in its U.S. casualty business had “definitely spiked” and that rate increases had accelerated into the high teens. Everest further disclosed that its annual casualty reserve review was underway and would be completed during the fourth quarter.

On this news, Everest stock fell $24.39 or 6.42%, to close at $355.61 per share on October 31, 2024, thereby injuring investors.

Then, on January 27, 2025, Everest announced $1.7 billion in reserve strengthening, including approximately $1.3 billion related to U.S. casualty losses in Everest’s Insurance segment, principally from accident years 2020 through 2024. Its new Chief Executive Officer (CEO) acknowledged that Everest’s underwriting choices contributed significantly to the losses.

On this news, Everest stock fell $21.49 or 5.8% over the following two consecutive trading days, to close at $351.51 per share on January 29, 2025, thereby further injuring investors.

Then, on October 27, 2025, Everest disclosed $478 million in unfavorable prior-year reserve development, driven principally by U.S. casualty losses. Everest also entered into an agreement providing $1.2 billion in protection against further adverse development on approximately $5.4 billion of North American Insurance and Other segment reserves for accident years 2024 and prior.

On this news, Everest stock fell $39.07 or 11.4%, to close at $304.91 per share on October 28, 2025, further injuring investors.