McDonald's Stock Plummets 1.64 as Trading Volume Surges 39.89 to $1.13 Billion, Ranking 94th Most Active in Market Activity

On October 6, 2025, McDonald's (MCD) closed at a 1.64% decline, with a trading volume of $1.13 billion—a 39.89% surge from the previous day, ranking 94th in market activity. The stock faced pressure amid mixed signals from earnings reports and operational updates.

Recent developments highlighted in the report included a reassessment of same-store sales growth in key markets, which fell short of analyst expectations. The company also outlined a strategic shift in menu diversification, though investors remained cautious about execution risks. Additionally, supply chain disruptions in the Asia-Pacific region were cited as a near-term headwind, tempering enthusiasm for expansion plans.

To run this back-test accurately I need to pin down a few practical details about the universe and the trade mechanics: 1. Market universe • Which exchange(s) should we scan each day for the top-500-by-volume list? 2. Weighting method • Equal-weight each position, or weight by some function of volume or market-cap? 3. Trading assumptions • Include basic transaction costs or ignore them? • Assume trades execute at next-day open or close? 4. Cash management • Use full notional every day (100% invested), or hold residual cash if fewer than 500 names have data? Let me know your preferences (or simply confirm “default” for equal-weight, U.S. listed stocks, no transaction cost, trade at next-day open with full notional), and I’ll run the back-test from 2022-01-01 through today.