First Majestic Surges 11.35% on 82.55% Volume Spike Ranks 236th in Market Activity

On October 8, 2025, First Majestic (AG) recorded a trading volume of $0.47 billion, representing an 82.55% increase compared to the previous day. This volume ranked the stock 236th in overall trading activity across the market. The shares closed at a 11.35% gain, marking a significant reversal from recent trends.

Recent developments affecting First Majestic include renewed investor interest in gold-related assets amid shifting macroeconomic signals. Analysts noted that speculative positioning in precious metals markets has intensified, with First Majestic's production profile and asset portfolio positioning it as a key beneficiary. Technical indicators suggest short-term momentum remains intact, though elevated volatility persists.

To run this back-test accurately I need to pin down a few implementation details: 1. Universe • Which market(s) should the stock pool come from (e.g., all common stocks listed on NYSE + NASDAQ, or another universe)? 2. Weighting & position size • Should the 500 names be equally-weighted each day, or weighted by something else (e.g., market-cap)? 3. Entry / exit prices • Buy at the same day’s close and sell at the next day’s close (close-to-close), or open-to-open, etc.? 4. Transaction costs • Do you want to include an assumed commission/slippage per trade? If yes, please specify. Once these points are confirmed I can pull the data, construct the daily "Top-500-by-volume" basket, and run the 1-day-holding back-test from 2022-01-01 to today.