In the most recent period of Q1'26, Rivian (RIVN)'s operating ROA metrics show ROE at -9.39%, ROA at -2.92%, and ROIC at -8.10%, indicating a continued negative but relatively improved performance compared to deeper losses in prior quarters, with ROA reflecting the strongest recovery among the three. Over the timeframe from Q2'23 to Q1'26, all metrics exhibit a volatile downward trend initially, with ROE declining from -10.20% to a low of -23.15% in Q3'25, ROA from -6.94% to -9.49% in Q2'24, and ROIC from -7.58% to -11.00% in Q3'25, before partial rebounds in late 2024 and early 2026; significant inflection points include Q4'24 improvements (ROA to -4.83%, ROIC to -5.83%) and Q1'25 peaks (ROA at -3.51%, ROIC at -4.26%), highlighting operational challenges in asset efficiency amid the company's growth phase. This line chart underscores persistent inefficiency in returns on equity, assets, and invested capital, with ROE consistently underperforming the others due to leverage factors, though recent stabilization suggests potential for narrowing losses if trends hold.