Detroit’s top carmaker just wrote down $7.6 billion on its EV business—and grew its market cap by the same amount. Here’s how GM did it

General Motors shares surged as much as 9% on Tuesday, adding over $7 billion to the company’s market capitalization, after the biggest automaker in Detroit reported earnings. Disclosing a massive $7.6 billion dollar write-down on its electric vehicle ambitions, the automaker also wowed the Street with blockbuster cash generation, fatter shareholder payouts, and a confident outlook for 2026.​

The Detroit giant, long seen as the standard-bearer for traditional U.S. carmaking, reported 2025 adjusted Ebit of $12.7 billion...