Merck (MRK) Reports Q4 Earnings: What Key Metrics Have to Say

Core Insights - Merck reported $16.4 billion in revenue for Q4 2025, a 5% year-over-year increase, with an EPS of $2.04 compared to $1.72 a year ago, exceeding Zacks Consensus Estimates for both revenue and EPS [1] Financial Performance - Revenue surprise was +1.33% over the Zacks Consensus Estimate of $16.19 billion, while the EPS surprise was +0.62% over the consensus estimate of $2.03 [1] - Merck's shares returned +5.5% over the past month, outperforming the Zacks S&P 500 composite's +1.8% change [3] Key Product Sales - Hospital Acute Care (Bridion) in the U.S. generated $451 million, exceeding the estimated $418.39 million, reflecting an 18.1% year-over-year increase [4] - Oncology (Keytruda) international sales reached $3.45 billion, surpassing the $3.39 billion estimate, with a 15% year-over-year increase [4] - Diabetes (Janumet) in the U.S. reported $57 million, below the estimated $69.57 million, marking a significant decline of 37.4% year-over-year [4] - Oncology (Lynparza) alliance revenue in the U.S. was $180 million, slightly above the $176.62 million estimate, with a 1.7% year-over-year increase [4] - Cardiovascular (Winrevair) sales were $467 million, exceeding the estimated $452.86 million [4] - Vaccines (Vaxneuvance) generated $140 million, below the $178.52 million estimate, reflecting a 13% year-over-year decline [4] - Oncology (Welireg) sales reached $220 million, surpassing the $195.53 million estimate [4] - Oncology (Keytruda) domestic sales were $8.34 billion, slightly above the $8.31 billion estimate, with a 6.4% year-over-year increase [4] - Oncology (Lenvima) alliance revenue was $272 million, exceeding the $243.71 million estimate, with a 6.7% year-over-year increase [4] - Vaccines (Gardasil) reported $1.03 billion, close to the $1.04 billion estimate, but down 33.5% year-over-year [4] - Virology (Lagevrio) sales were $57 million, above the $45.95 million estimate, but down 52.9% year-over-year [4] - Oncology (Reblozyl) alliance revenue was $164 million, exceeding the $138.97 million estimate, with a significant 49.1% year-over-year increase [4]