Archer Aviation Shares Dip 0.16% as $1.05B Volume Slumps 37.86% to Rank 96th in Liquidity
On October 8, 2025, Archer AviationACHR-- (ACHR) closed with a 0.16% decline amid a 37.86% drop in trading volume to $1.05 billion, ranking 96th in market liquidity. The underperforming volume suggests reduced short-term investor interest, though broader market context remains neutral.
A back-test framework for evaluating volume-based strategies requires precise parameters. Key considerations include defining the stock universe (e.g., excluding penny stocks or ETFs), using prior-day volume data to avoid look-ahead bias, and equal-weighted daily rebalancing of a 500-stock portfolio. Implementation hinges on end-of-day data availability from January 3, 2022, to the present, with a one-business-day holding period assumed.
Confirmation of these settings will enable data extraction and back-test execution. The methodology prioritizes rigorous signal validation while minimizing structural biases in the analysis.

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