American's $340M Volume Plummets 36% to 307th in U.S. Rankings as Liquidity Wanes

American (AMER) traded with a volume of $0.34 billion on September 24, 2025, marking a 36.84% decline from the previous day’s trading activity. The stock ranked 307th in dollar volume among U.S.-listed equities, reflecting subdued liquidity conditions compared to its peers.

Recent market dynamics highlighted a broader trend of reduced institutional engagement in mid-cap sectors. Analysts noted that declining order flow in technology and communications services indices indirectly pressured American’s position in the sector. The firm’s underperformance relative to its 52-week average volume suggests potential near-term volatility as market participants reassess exposure to capital-light infrastructure plays.

To create an accurate back-test I still need a few details: (1) Universe – clarification on whether “Top 500” refers to daily dollar-volume-ranked U.S. stocks or a specific index like Russell 3000; (2) Trade price – confirmation if positions should be opened at day’s close and exited at next day’s close; (3) Rebalancing mechanics – whether the portfolio should be equally weighted daily and if transaction costs or slippage assumptions apply; (4) Benchmark – specification of a reference index like SPY if required. These parameters are critical for generating a data-retrieval plan and executing the back-test effectively.