Core Viewpoint - CSL Ltd. experienced its largest stock price drop in nearly 17 years despite announcing a restructuring plan to split its Seqirus vaccine business and cut costs by approximately $500 million annually, as the company's earnings performance fell short of market expectations [1][2] Group 1: Financial Performance - CSL's annual net profit increased by 17% to $3 billion, slightly exceeding the expected $2.97 billion, but analysts questioned the quality of this profit growth, attributing it mainly to a reduced tax rate rather than core business performance [1] - The revenue from CSL's Behring division did not meet expectations, raising concerns about the sustainability of the company's earnings [1] Group 2: Restructuring Plans - The CEO announced the separation of the Seqirus vaccine division into an independent publicly listed company to streamline operations and focus on blood and iron products, particularly for rare diseases and chronic kidney conditions [1] - The company plans to consolidate its global R&D centers from 11 to 6 and close 22 underperforming plasma collection centers in the U.S., potentially reducing its workforce by up to 15% [2] Group 3: Market Reactions and Future Plans - The stock price fell by as much as 12% during early trading, marking the largest intraday drop since November 2008, reflecting market aversion to uncertainty and execution risks associated with the restructuring [1] - CSL announced a $487 million stock buyback plan for the current fiscal year, marking the first buyback initiative in several years, which may provide some reassurance to investors [2]