投资圈都在学习“稳定币”，浓度最高的指数是哪只？

Group 1 - The core focus of the news is the increasing interest and regulatory developments surrounding stablecoins, particularly in the U.S. and Hong Kong [2][3][5] - The U.S. GENIUS Act passed in May 2023 establishes a regulatory framework for stablecoins, while Hong Kong's stablecoin regulations will take effect on August 1, 2023 [2][3] - Market reactions to stablecoin-related stocks have been significant, with notable price increases for companies like Guotai Junan International and Circle [4][5] Group 2 - The stablecoin industry is seeing participation from traditional banks and tech companies, with major players in Hong Kong including Standard Chartered, JD.com, and Ant Group [7][8] - The global stablecoin market has a total market capitalization of nearly $250 billion, with USDT holding approximately 62% market share and USDC around 24% [12] - The business model for stablecoins includes issuance, custody, and technology support, with key roles played by financial institutions and tech companies [10][13] Group 3 - The financial technology ETF (159851) is highlighted as a significant investment vehicle, with over 20% of its components related to stablecoins and digital currencies [16] - The ETF has shown high volatility and resilience, outperforming the broader market indices in recent years [19][27] - The ETF's components include companies involved in digital currency infrastructure, payment systems, and blockchain technology, indicating a strong alignment with financial innovation [18][20]