US Market Slumps to 172nd in $620M Volume as Rare Earths Outperform Amid Sector Rotations

On October 7, 2025, the USA equity market recorded a trading volume of $0.62 billion, ranking 172nd among daily trading sessions. USAR, a rare earth sector player, surged 7.41% to lead the day’s performance. The session saw mixed momentum as broader market liquidity remained subdued despite the energy and materials subsectors showing relative strength.

Investor attention focused on sectoral rotations driven by commodity price fluctuations and refining sector earnings updates. Analysts noted that the rare earths segment continued to attract speculative positioning ahead of anticipated policy announcements in the coming quarter. However, the overall market breadth remained constrained, with most large-cap indices showing sideways consolidation amid elevated volatility in smaller-cap names.

The backtesting scenario for a daily-rebalanced portfolio involving the top 500 volume stocks faces implementation challenges. Current tools only support single-ticker evaluations or predefined event-based strategies. Two feasible alternatives exist: adopting liquidity-weighted ETF proxies like SPY or RSP, or supplying a custom universe of tickers for daily rebalancing. The latter approach would require a comprehensive dataset of daily volume rankings to construct the aggregate performance series accurately.