Vale's Shares Drop 1.74% on $640M Volume Spike Despite 135th Active Stock Rank

On September 26, 2025, Vale (VALE) closed down 1.74% despite a 134.93% surge in trading volume to $640 million, ranking 135th among active stocks. The miner's shares faced pressure amid shifting market dynamics, with investors recalibrating exposure to commodity-linked equities as macroeconomic signals remained mixed.

Analysts noted that Vale's performance was influenced by evolving expectations around global demand for iron ore. Recent industry reports highlighted potential supply-side adjustments in key production regions, while trade flow data underscored persistent logistical bottlenecks. These factors contributed to a risk-off sentiment among traders holding cyclical commodity positions.

To build a daily-rebalanced strategy that buys the 500 most-actively-traded stocks and holds them for one trading day, I need to pin down a few practical details so the backtest matches what you have in mind: 1. Universe: Which market should we scan each day? 2. Weighting method 3. Transaction frictions 4. Benchmark (optional). If the default "all U.S. listed stocks, equal weight, zero costs" is acceptable, let me know and I'll proceed with that setup from 2022-01-03 through today.