Coherent Surges on 33% Volume Spike as New Laser Tech Launch Propels Stock to 295th Most Traded

On August 22, 2025, Coherent (COHR) surged 3.81% with a trading volume of $0.35 billion, a 33.07% increase from the prior day, ranking it 295th in market activity. The stock’s performance coincided with a press release announcing the introduction of new ARM laser and laser processing head technologies, signaling potential demand for advanced industrial solutions.

The product launch underscores Coherent’s focus on expanding its laser systems portfolio, a core segment driving revenue. Analysts suggest the innovation could attract manufacturing and materials processing clients, aligning with broader industry trends toward precision laser applications. The stock’s elevated volume indicates heightened investor confidence in the company’s R&D pipeline and market positioning.

The strategy of buying the top 500 stocks by daily trading volume and holding them for one day from 2022 to 2025 delivered moderate returns. The 1-day return was 0.98%, with a total return of 31.52% over 365 days. The strategy's Sharpe ratio was 0.79, indicating good risk-adjusted returns. The highest daily return was 4.95%, and the lowest was -4.47%. This backtest shows the strategy's ability to capture short-term momentum while facing volatility in the stock market.