Molson Coors Beverage Company (TAP) stock plummeted 8.01% in post-market trading following the release of its fourth-quarter 2025 earnings and disappointing full-year 2026 outlook.

The sharp decline came after the company reported Q4 net sales of $2.66 billion, missing analyst estimates of $2.71 billion and representing a 2.7% decrease year-over-year. While adjusted earnings per share of $1.21 exceeded expectations, investor focus shifted to the company's pessimistic forecast for 2026.

Molson Coors guided for 2026 net sales to be roughly flat, ranging from -1% to +1% on a constant-currency basis. More significantly, the company expects a substantial decline in profitability, with underlying diluted EPS anticipated to drop 11% to 15%. Management cited severe cost inflation—particularly from aluminum Midwest Premium representing over $125 million headwind—alongside continued soft beer demand, competitive pressures, and higher marketing and administrative expenses as key factors driving the weak outlook.