Core Viewpoint - Several high-performing North Exchange theme funds have implemented purchase limits to maintain strategy effectiveness and protect investor interests [1][2] Group 1: Fund Performance and Market Dynamics - As of May 19, nearly 80% of North Exchange theme funds have seen net value increases exceeding 30% this year, with many products ranking high in their categories [2] - The rapid increase in net value indicates potential short-term volatility risks, prompting multiple North Exchange theme funds to impose purchase limits [2] - Fund managers believe that the recent revisions to major asset restructuring rules and the introduction of a "small and fast" review mechanism have invigorated the overall vitality of the sector [2][4] Group 2: Fund Company Competition and Strategy - Fund companies such as Baoying, Qianhai Kaiyuan, Yongying, and Huatai Bairui have launched new North Exchange 50 index funds this year, indicating increased competition [4] - The China Securities Regulatory Commission has emphasized the importance of performance comparison benchmarks, leading to a restructuring of benchmarks among North Exchange theme funds [4] - Recent adjustments in performance benchmarks reflect fund companies' proactive management capabilities and aim to enhance product transparency [4]