查了一下AI, 它的addition/removal 邏輯

來源: 2025-09-20 15:45:24 [博客] [舊帖] [給我悄悄話] 本文已被閱讀:

Index-Based Tracking: SPMO's primary objective is to track the performance of the S&P 500 Momentum Index. The fund aims to invest at least 90% of its total assets in the securities that make up this index.  

Momentum Score Calculation: The index's methodology is based on a "momentum score" for each stock in the S&P 500 Index. This score is calculated based on the stock's one-year price return, excluding the most recent month.  

Volatility Adjustment: The momentum score is also adjusted for volatility, with less volatile stocks receiving a positive adjustment.  

Constituent Selection: The index selects the top 100 stocks from the S&P 500 that have the highest momentum scores.  

Rebalancing and Reconstitution: The index, and consequently the SPMO ETF, is rebalanced and reconstituted semi-annually. This typically occurs on the third Friday of March and September. During this process, the index's holdings are reviewed and adjusted to reflect the latest momentum scores of the stocks.  

Weighting: The stocks in the index are weighted based on a combination of their market capitalization and their momentum score.