Core Viewpoint - The stock of Yaojie Ankang-B (02617.HK) has surged dramatically, with a price increase of over 130% on September 11 and a total rise of 200% over the last three trading days, reaching a market capitalization of nearly HKD 997 billion within three months of its listing [2][6]. Company Performance - Yaojie Ankang-B's core product, Tinengotinib (TT-00420), has received clinical approval from the National Medical Products Administration of China for a Phase II trial targeting HR+/HER2- breast cancer patients [5][6]. - The company reported a pre-tax loss of HKD 1.23 billion for the first half of 2024, an improvement from a loss of HKD 1.6 billion in the same period of 2023 [9]. - Other income and revenue decreased by 65.1%, from HKD 10.4 million in 2024 to HKD 3.6 million in 2025, primarily due to reduced bank interest and government subsidies [9]. Market Dynamics - The stock was listed on the Hong Kong Stock Exchange on June 23, 2025, with an initial offering price of HKD 13.15 per share, raising HKD 201 million [7]. - The stock has been included in the Hong Kong Stock Connect program, effective September 8, 2025, which may enhance its trading volume and investor interest [10]. Clinical Trial Insights - The Phase II clinical trial aims to evaluate the safety, efficacy, and pharmacokinetics of Tinengotinib in combination with Fulvestrant for patients with HR+/HER2- breast cancer who have previously failed treatment [6][5]. - Early clinical results indicate promising efficacy for Tinengotinib as a monotherapy in this patient population, suggesting potential for significant market impact [9].