Moody's Slips to 371st in Volume Amid Sector Pressures and Regulatory Scrutiny

On September 15, 2025, , , . The stock’s performance reflected broader sector pressures amid evolving credit market dynamics.

Recent developments highlighted Moody’s exposure to regulatory scrutiny and macroeconomic uncertainties. Analysts noted that the firm’s credit ratings division faces intensified oversight following recent policy shifts in . Additionally, market participants observed a cautious stance among institutional investors, with reduced trading activity in credit risk assessment services potentially impacting near-term revenue visibility.

To ensure I structure the test exactly as you intend, I need to clarify two points: 1. Universe and data scope • The “top-500-by-volume” list changes every trading day and can span thousands of tickers over time. • Our current back-testing engine evaluates one instrument (one ticker or one ETF) at a time. • A practical way to approximate your idea is to choose an index-like vehicle that already represents the most heavily traded names (for example, SPY for the S&P 500) or to construct an equal-weight daily portfolio file ourselves. 2. Implementation route a) Use an ETF / index proxy (fastest). b) Build a custom daily portfolio of the 500 highest-volume U.S. stocks (more precise but heavier, requiring a data-sourcing step for every listed ticker each day). Which approach would you like to proceed with?