Archer Aviation's ACHR Surges 4.71% on $610M Trading Volume Ranks 169th in Market Activity Amid eVTOL Regulatory Developments

Archer Aviation (ACHR) surged 4.71% on Sept. 23, with a trading volume of $610 million—a 58.03% increase from the previous day—ranking 169th in market activity. The stock’s performance coincided with renewed focus on its electric vertical takeoff and landing (eVTOL) aircraft development timelines, particularly after recent regulatory updates in the U.S. Department of Transportation’s certification framework for advanced air mobility (AAM) vehicles. Analysts noted that the volume spike aligned with broader investor optimism about infrastructure-related policy tailwinds, though no new product launches or financial results were disclosed in the period.

Discussions among industry observers highlighted the company’s strategic positioning in the emerging urban air mobility sector, with particular emphasis on its partnership agreements with regional airports to establish charging and maintenance hubs. While the firm has yet to achieve commercial revenue, its technical roadmap for 2026-2027 remains a key focal point for long-term investors. Short-term momentum, however, appears driven by macroeconomic factors rather than firm-specific catalysts, as broader equity markets reacted to shifting interest rate expectations.

To run this back-test for you I need to pin down a few practical details: 1. Universe • Should the “top 500 stocks” be chosen from all U.S. listed equities, or from a specific index such as the Russell 3000, the S&P 1500, etc.? • If you have another market (e.g., Europe, Japan, China) in mind, please specify. 2. Volume definition • Rank by dollar volume (price × shares traded) or by share volume? 3. Weighting & re-balancing • Do you want to hold the 500 names equal-weighted and re-balance every day (i.e., sell yesterday’s basket at today’s open or close and buy today’s new top-volume list)? • Any transaction-cost assumption you’d like us to apply? Once I have these clarifications I’ll generate the data retrieval plan and run the back-test.