Exelon's $230M Volume Ranks 470th in U.S. Equities Amid Regulatory Scrutiny and Steady Earnings Guidance

On September 15, 2025, Exelon Corporation (EXC) traded with a volume of $230 million, ranking 470th among U.S. equities. The utility stock closed 0.12% higher, showing modest gains amid mixed market conditions.

Recent developments highlight regulatory scrutiny intensifying for Exelon’s nuclear energy operations. State regulators in Illinois are reportedly reviewing safety protocols at the company’s Byron and Dresden plants following routine maintenance delays. While no operational risks were disclosed, the review has raised investor concerns about potential compliance costs and operational disruptions.

Separately, Exelon’s earnings guidance for Q3 2025 remains unchanged despite broader industry headwinds. Analysts note the company’s hedging strategy has cushioned exposure to volatile natural gas prices, though this advantage may wane if energy markets stabilize by year-end. The stock’s performance appears decoupled from peer movements, suggesting investor focus on its regulatory profile rather than macroeconomic factors.

To run this back-test robustly I need to nail down a few practical details: Universe definition (“Top 500 stocks by daily trading volume” – should this be measured across all U.S. listed common stocks, only the S&P 500 constituents, or another universe? Do we re-select the top-volume list every trading day?). Execution & pricing convention (Buy at the next day’s open and liquidate at that day’s close, or buy at today’s close and sell at tomorrow’s close? Any transaction cost/slippage assumption to include?). Benchmark (if any) for comparison. Risk-control rules (stop-loss, max drawdown, etc.) – or none. Once I have these points I can generate the data-retrieval plan and run the back-test.