金工ETF点评：跨境ETF单日净流入24.41亿元，公用事业、建材拥挤度拉满

• The report mentions the construction of an "industry crowding monitoring model" to track the crowding levels of Shenwan first-level industry indices on a daily basis. The model identifies industries with high crowding levels, such as utilities and building materials, and those with lower levels, like automobiles and food & beverage. It also highlights significant daily changes in crowding levels for industries like real estate and utilities[6] - Another model mentioned is the "premium rate Z-score model," which is used to screen ETF products for potential arbitrage opportunities. The model employs rolling calculations to identify ETFs with potential risks of price corrections[6] - The industry crowding monitoring model evaluates crowding levels based on daily fund flows and crowding metrics, providing insights into industry trends and fund allocation changes over recent trading days[6] - The premium rate Z-score model calculates Z-scores for ETF premium rates, identifying deviations from historical averages that may signal arbitrage opportunities or risks[6] - The industry crowding monitoring model is qualitatively assessed as effective for identifying industry trends and fund allocation shifts, aiding investors in decision-making[6] - The premium rate Z-score model is qualitatively evaluated as useful for detecting arbitrage opportunities and potential risks in ETF pricing[6] - The industry crowding monitoring model highlights utilities and building materials as having high crowding levels, while automobiles and food & beverage exhibit lower levels. Real estate and utilities show significant daily crowding level changes[6] - The premium rate Z-score model identifies ETFs with potential arbitrage opportunities based on deviations in premium rates, though specific Z-score values are not provided in the report[6]