SanDisk's $1.23B Volume Surge Dips 6.17% as Stock Ranks 60th in U.S. Equity Activity
On September 24, 2025, SandiskSNDK-- (SNDK) closed at a 6.17% decline amid a 46.41% surge in trading volume to $1.23 billion, ranking 60th in U.S. equity market activity. The stock’s performance contrasted with elevated liquidity metrics despite the downward price movement.
Market participants noted the divergence between volume expansion and price weakness, suggesting potential short-term positioning shifts or profit-taking dynamics. The elevated volume indicated heightened institutional or algorithmic activity, though no direct catalysts were disclosed in accessible reports.
For the back-test strategy "buy the top 500 stocks by daily trading volume and hold for one day (T + 1 exit)," key parameters require definition: universe scope (e.g., Russell 3000 vs. broader U.S. equities), entry/exit timing (close vs. open), transaction cost assumptions, and data processing feasibility for ~5.6 million rows of volume records between 2022-01-01 and the current date. Confirmation of these parameters is necessary before executing the analysis.

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