As of Q4'25, ABBV reported a net income of USD 1.82B, representing a significant year-over-year increase of 83.55%. This marks a notable rebound from the previous quarter's net income of USD 186M and follows a period of volatility, including a negative net income in Q4'24. Over the period from Q1'23 to Q4'25, ABBV's net income has demonstrated considerable fluctuations, with sharp declines in Q4'23 and Q4'24, the latter even recording a net loss. The YoY growth rates have been highly volatile, with substantial positive spikes in Q1'24 and Q4'25, and deep negative swings in several quarters. This pattern suggests periods of both operational challenges and strong recoveries, highlighting the company's unstable earnings performance across the observed quarters.