Jack (JKHY) Slumps 1.62% as Trading Volume Surges 105% to $380M Ranking 425th in U.S. Liquidity

, , ranking it 425th among U.S. stocks by liquidity. The decline followed mixed signals from recent operational updates and sector positioning shifts. While the company's core financial technology services remain resilient, market participants noted short-term profit-taking after a three-week consolidation phase in its share price. Analysts highlighted that the stock's volatility aligns with broader market trends in , though no new earnings or strategic announcements were reported.

To construct a meaningful back-test of a "Top-500-by-volume, 1-day-hold" strategy we need to settle a few implementation details: Universe - Which market should we scan each day – e.g., all primary-listed U.S. common stocks (≈4,500 names) or a different universe? Trade mechanics - Entry price: today’s close or tomorrow’s open? Exit price after the 1-day hold: next day’s close or next day’s open? Rebalancing cost assumptions - Any commission or slippage that should be applied? Portfolio aggregation - Results to be shown as an equal-weight portfolio of the 500 names re-balanced daily (default), or some other weighting? Once these are confirmed I can generate the retrieval plan, pull the volume data, build the daily portfolios, and run the back-test.