Fastenal's $580M Volume Surge Propels It to 195th Rank Amid 1.33% Share Drop

On September 11, 2025, , , . Despite the elevated liquidity, , reflecting mixed investor sentiment amid broader market dynamics.

The stock’s performance was influenced by its position as a mid-cap industrial parts distributor, with recent market activity suggesting short-term volatility. , . No direct news impacting Fastenal’s fundamentals was reported during the period, leaving technical factors as the primary drivers of the session’s action.

To run this back-test accurately I need to pin down a few practical details that aren’t specified yet: 1. Universe • Do you want to rank all listed U.S. common stocks (NYSE + NASDAQ + AMEX), or a narrower universe such as the Russell 3000 constituents? 2. Trade-timing convention • In live trading you only know the day’s volume after the close, so the standard practice is: – Rank stocks by yesterday’s volume at the close. – Enter the positions at the next day’s open. – Exit those positions at that day’s close (1-day holding period). • If you’d prefer a different convention (e.g., buy at the same day’s close), let me know. 3. Weighting • Equal-weight across the 500 names, or weight by something else (e.g., proportionally to dollar volume)? 4. Slippage & transaction costs • Should I include a bid-ask spread or commission assumption? .