Coupang's Stock Slides to 166th in U.S. Trading Volume Amid Margin Pressures and Regulatory Scrutiny

On September 10, 2025, , ranking 166th among U.S. equities. .

Investor sentiment remained cautious as recent earnings highlighted persistent margin pressures. The e-commerce giant reported weaker-than-expected Q2 gross profit margins, . Analysts noted the company's aggressive investment in delivery infrastructure could delay near-term profitability improvements.

Market participants are closely monitoring regulatory developments in the retail sector. A pending antitrust investigation into Coupang's marketplace practices has introduced valuation uncertainty. The stock's underperformance contrasts with peers benefiting from AI-driven supply chain innovations, though Coupang's AI adoption in inventory management is expected to accelerate in Q4.

To set up and run this back-test rigorously, I need to lock down a few practical details before retrieving the data. Please let me know (or confirm the defaults shown in brackets):

1. Universe • Exchange scope: all actively-listed US common stocks on NYSE + NASDAQ + NYSE Arca [default] • Delisted names: include historical delistings during the 2022-2025 span? [exclude]

2. Re-balancing rule • Selection time: pick the top-500 by total trading volume measured on each day’s closing bar • Trade execution: buy at that same day’s close, liquidate at the next day’s close (holding period = 1 trading day) • Position sizing: equal-weight each of the 500 names • Cash drag & reinvestment: fully invested every day, no residual cash • Transaction cost assumptions: none [default]

3. Benchmark for comparison (optional) • SPY ETF [default] or another benchmark of your choice

4. Performance metrics you’d like to see beyond the basic cumulative return (e.g., annualized return, volatility, Sharpe ratio, max drawdown, hit ratio, etc.)

Once I have your confirmation (or any adjustments), I’ll pull the daily volume and close-price data and run the back-test.