海南自贸概念强势，海航控股4连板，海南海药等涨停

Core Viewpoint - The Hainan Free Trade Zone concept has seen a strong surge in stock prices, with several companies reaching their daily limit up, indicating heightened market interest and potential overvaluation in the sector [1][2]. Company Performance - Hainan Airlines Holdings has experienced a continuous limit-up for four trading days, with the company confirming that its daily operations are normal and no significant changes in its business environment have occurred [1]. - The stock price of Hainan Airlines has significantly outperformed the Shanghai Composite Index and industry indices in the short term, raising concerns about potential market overheating [1]. Industry Growth - The key parks in Hainan Province achieved a revenue of 18,538.69 billion yuan in the first three quarters, reflecting a year-on-year growth of 8.9% [1]. - Fixed asset investment in key parks reached 953.80 billion yuan, with a year-on-year increase of 4.1%, indicating a positive trend in infrastructure development [1]. - Seven key parks reported growth in fixed asset investment, contributing to a 3.7 percentage point increase in overall provincial investment [1]. Investment Highlights - The Haikou Jiangdong New District remains the primary driver of investment growth in key parks, while the Wenchang International Aerospace City and Lingao Golden Port Development Zone have shown rapid investment growth of 50.1% and 46.9%, respectively [2].