Celestica Surges 7 19 on 770M Volume Ranking 144th in Market Activity

Celestica (CLS) surged 7.19% on October 8, 2025, with a trading volume of $770 million—a 74.7% increase from the prior day—ranking 144th in market activity. The stock’s performance followed a mix of strategic announcements and sector-specific dynamics.

Recent updates highlighted Celestica’s expanded role in advanced manufacturing solutions, including new partnerships in the renewable energy sector. Analysts noted the firm’s ability to secure high-margin contracts amid industry-wide supply chain adjustments. The company also announced a phased expansion of its North American facilities, signaling long-term confidence in capital-intensive demand cycles.

Market participants observed that Celestica’s stock benefited from broader investor rotation toward industrials, driven by renewed infrastructure spending forecasts. However, short-term volatility remained tied to quarterly earnings expectations, with traders pricing in potential guidance revisions ahead of the November reporting window.

To run this back-test accurately I need to pin down a few implementation details that aren’t yet specified: 1. Universe • Should the ranking be performed on all U.S. listed equities (NYSE + NASDAQ) or a smaller universe such as the current S&P 500 constituents? • If you prefer another universe, please let me know. 2. Execution price • Enter at today’s close and exit at tomorrow’s close, or • Enter at next day’s open and exit at next day’s close/open? (Default market-neutral studies usually use “buy at today’s close, sell at tomorrow’s close”). 3. Weighting & sizing • Equal-weight across the 500 names (default)? • Any transaction cost or slippage assumption you’d like applied? 4. Risk controls • Any stop-loss, take-profit, max holding-days (beyond the 1-day rule), or drawdown constraints? If you’re happy with the following default plan, let me know and I’ll launch the back-test immediately: • Universe: current S&P 500 constituents. • Each trading day from 2022-01-03 to today, rank by that day’s dollar volume, buy the top 500 at the close, sell them at the next day’s close, equal-weighted, no transaction costs. Feel free to adjust any of these points and I’ll proceed.