Aurora Innovation's stock experienced a significant after-hours plunge of 5.50% on Wednesday. The sharp decline followed the company's release of its fourth quarter and full year 2025 financial results.

The movement appears to be a market reaction to the newly disclosed earnings figures and the company's updated operational and financial outlook. In conjunction with the results, Aurora provided guidance on its driverless truck deployment, announcing an expectation to have more than 200 driverless trucks in operation by the end of 2026. The company also detailed plans to launch a hardware kit on the International LT Series truck platform without a ride observer in the second quarter.

Furthermore, Aurora's financial projections indicate an expectation to achieve positive free cash flow in 2028 with its current liquidity position. The post-market sell-off suggests investor sentiment may have been negatively impacted by aspects of the quarterly performance or the long-term timeline associated with the provided guidance.