Lyft, Inc.'s stock experienced a 24-hour plunge of 16.85% during Tuesday's trading and extended session, following the release of its fourth-quarter and full-year 2025 financial results.

The sharp decline was driven by a combination of disappointing figures and a cautious near-term outlook. The company's Q4 revenue of $1.59 billion fell short of analyst estimates. More significantly, Lyft forecast first-quarter adjusted core profit below expectations, citing severe winter weather disruptions and seasonal cost pressures. The guidance overshadowed the announcement of a new $1 billion share repurchase program.

Investors were further unsettled by a surprise operating loss of $188.4 million for the full year 2025, which contrasted with analyst expectations for a profit. While the company reported record quarterly adjusted EBITDA, the weaker forward-looking statements and unexpected annual loss were the primary catalysts for the stock's steep decline in after-hours trading.