Amprius Technologies Inc. Return on Net Assets (RONA) is -25.40% for the year ending December 31, 2023, a -131.36% change year over year. Return on net assets measures the profitability of a company relative to its net assets, which include total non-current assets and working capital. It is calculated by dividing the net income by the sum of total non-current assets and working capital. This ratio indicates the return generated for each unit of net asset investment made by the company. A higher return on net assets suggests better profitability and efficient utilization of the company's asset base.