荣昌生物的创新药出海交易为何带崩股价？

Core Viewpoint - Rongchang Biologics announced the licensing of its product Taitasip to Vor Bio, granting exclusive rights for development and commercialization outside Greater China, which has led to a significant drop in its stock prices despite the potential financial benefits from the deal [1][2][3] Group 1: Licensing Deal Details - Rongchang Biologics will receive $125 million in cash and warrants from Vor Bio, including an upfront payment of $45 million and $80 million in warrants, representing approximately 23% equity stake [1] - Vor Bio is also obligated to pay up to $4.105 billion in milestone payments based on clinical registration and commercialization, along with high single to double-digit sales royalties [1] - The deal structure follows a Newco model, where specific pipelines are separated and developed through a newly established company, allowing Rongchang to leverage Vor Bio's resources for overseas commercialization [4] Group 2: Market Reaction and Stock Performance - Following the announcement, Rongchang Biologics' A and H shares experienced significant declines, with A shares hitting a 20% limit down and H shares dropping over 25% [1][2] - The stock had previously surged by 34.37% from June 20 to June 25, reaching a high of 70.1 yuan per share, indicating a stark contrast between market expectations and the actual deal terms [3] Group 3: Product Background and Clinical Development - Taitasip was conditionally approved for market entry in March 2021 and is the first dual-target biologic for treating systemic lupus erythematosus [5] - The product has received additional approvals for rheumatoid arthritis and adult generalized myasthenia gravis, with ongoing global Phase III clinical trials for various indications [6][7][9]