ALNY Q4 Earnings Beat, Sales Miss Despite Y/Y Growth, Stock Down

Core Insights - Alnylam Pharmaceuticals reported fourth-quarter 2025 adjusted earnings of $1.25 per share, exceeding the Zacks Consensus Estimate of $1.16, compared to adjusted earnings of 6 cents in the same quarter last year [1] - Total revenues for the quarter were $1.10 billion, falling short of the Zacks Consensus Estimate of $1.14 billion, but representing an 85% year-over-year increase from $593.2 million [2] Financial Performance - Net product revenues reached $994.7 million, marking a 121% increase year over year, driven by strong demand for Amvuttra and other marketed drugs [3] - Net revenues from collaborators were $40.9 million, a 62% decrease from the previous year, primarily due to the absence of revenues from Novartis in the reported quarter [4] - Royalty revenues increased by 73% year over year to $61.4 million [5] Product Performance - Amvuttra generated sales of $826.6 million, up 189% year over year, although it missed the Zacks Consensus Estimate of $837.2 million [8] - Givlaari sales were $86.8 million, reflecting a 34% year-over-year increase and exceeding the Zacks Consensus Estimate of $79.7 million [9] - Oxlumo recorded sales of $49.6 million, a 14% increase year over year, but fell short of the Zacks Consensus Estimate of $55.2 million [9] Guidance and Future Outlook - For 2026, Alnylam expects net product revenues between $4.9 billion and $5.3 billion, indicating a year-over-year growth of 64-77% at constant exchange rates [17] - The company anticipates net revenues from collaborations and royalties to be in the range of $400 million to $500 million, with adjusted R&D and SG&A expenses projected between $2.7 billion and $2.8 billion [17] Overall Assessment - Alnylam's fourth-quarter results were mixed, with earnings surpassing estimates but revenues missing expectations, likely due to high market expectations rather than a decline in demand [18] - The significant year-over-year revenue growth was primarily driven by strong sales of Amvuttra, supported by recent label expansions [19]