Coherent Slides 0.5% as $350M Volume Propels Rank to 281st in Daily Trading Activity

On September 12, 2025, , , .

Recent market dynamics suggest selective sector rotation influenced the stock's performance. While no direct corporate announcements impacted COHR, broader market positioning in capital goods and photonics-related equities saw reduced momentum. Institutional selling pressure appears to have been a key driver, as volume levels remained elevated but failed to support a sustained price reversal. Analyst activity remained muted, with no major revisions to earnings estimates or technical outlooks observed.

To run this back-test rigorously I need to pin down a few practical details: Universe • Do you want all U.S.-listed common stocks, or a narrower list such as the S&P 1500 / Russell 3000 constituents? • If you have a pre-defined ticker list, I can import it directly. Trading convention • Buy point: today’s close or tomorrow’s open? • Sell point: next day’s close (i.e., a 1-day holding period) – is that what you have in mind? Frictions • Should I ignore transaction costs and slippage, or apply a round-trip cost (e.g., ? Once I know the universe and trading convention I can retrieve the necessary daily volume and price series, generate the signals, and run the back-test.